Origin of mechanical and dielectric losses from two-level systems in amorphous silicon, M. Molina-Ruiz, Y. J. Rosen, H. C. Jacks, M. R. Abernathy, T. H. Metcalf, X. Liu, J. L DuBois and F. Hellman, Phys. Rev. Materials 5, 035601 (2021).

Internal friction measurements of low energy excitations in amorphous germanium thin films, T. H. Metcalf, X. Liu, G. Jernigan, J. C. Culbertson, M. Abernathy, M. Molina-Ruiz, and F. Hellman, J. Alloys Compd. 856 157616 (2021).

Open data from the first and second observing runs of Advanced LIGO and Advanced Virgo, R. Abbott, F. Hellman, M. Molina-Ruiz, K. Shukla et al. (LIGO Scientific Collaboration and Virgo Collaboration), SoftwareX 13, 100658 (2021).

Comparing amorphous silicon prepared by electron-beam evaporation and sputtering toward eliminating atomic tunneling states, X. Liu, M. R. Abernathy, T. H. Metcalf, B. Jugdersuren, J. C. Culbertson, M. Molina-Ruiz, and F. Hellman, J. Alloys Compd. 855 157431 (2021).

Gravitational-wave Constraints on the Equatorial Ellipticity of Millisecond Pulsars, R. Abbott, F. Hellman, M. Molina-Ruiz, K. Shukla et al. (LIGO Scientific Collaboration and Virgo Collaboration), ApJL 902 L21 (2020).

Two-level systems and growth-induced metastability in hydrogenated amorphous silicon, M. Molina-Ruiz, H. C. Jacks, D. R. Queen, Q. Wang, R. S. Crandall and F. Hellman, Mater. Res. Express 7 095201 (2020).

Tilted fluctuation electron microscopy, Ellis Kennedy, Neal Reynolds, Luis Rangel DaCosta, Frances Hellman, Colin Ophus, and M. C. Scott, Appl. Phys. Lett. 117, 091903 (2020).

A cryogenic silicon interferometer for gravitational-wave detection, R. X. Adhikari, F. Hellman, M. Molina-Ruiz et al., Class. Quantum Grav. 37 165003 (2020).

Properties and Astrophysical Implications of the 150 M⊙ Binary Black Hole Merger GW190521, R. Abbott, F. Hellman, M. Molina-Ruiz, K. Shukla et al. (LIGO Scientific Collaboration and Virgo Collaboration), ApJL 900 L13 (2020).

GW190521: A Binary Black Hole Merger with a Total Mass of 150 M⊙, R. Abbott, F. Hellman, M. Molina-Ruiz, K. Shukla et al. (LIGO Scientific Collaboration and Virgo Collaboration), Phys. Rev. Lett. 125, 101102 (2020).

GW190814: Gravitational Waves from the Coalescence of a 23 Solar Mass Black Hole with a 2.6 Solar Mass Compact Object, R. Abbott, F. Hellman, M. Molina-Ruiz, K. Shukla et al. (LIGO Scientific Collaboration and Virgo Collaboration), ApJL 896 L44 (2020).

GW190412: Observation of a binary-black-hole coalescence with asymmetric masses, R. Abbott, F. Hellman, M. Molina-Ruiz, K. Shukla et al. (LIGO Scientific Collaboration and Virgo Collaboration), Phys. Rev. D 102, 043015 (2020).

A Joint Fermi-GBM and LIGO/Virgo Analysis of Compact Binary Mergers from the First and Second Gravitational-wave Observing Runs, R. Hamburg, F. Hellman, M. Molina-Ruiz, K. Shukla et al. (Fermi-GBM instrument team, LIGO Scientific Collaboration and Virgo Collaboration), ApJ 893 100 (2020).

Optically targeted search for gravitational waves emitted by core-collapse supernovae during the first and second observing runs of advanced LIGO and advanced Virgo, B. P. Abbott, F. Hellman, M. Molina-Ruiz, K. Shukla et al. (LIGO Scientific Collaboration and Virgo Collaboration, ASAS-SN Collaboration, DLT40 Collaboration), Phys. Rev. D 101, 084002 (2020).

GW190425: Observation of a Compact Binary Coalescence with Total Mass ~ 3.4 M⊙, B. P. Abbott, F. Hellman, M. Molina-Ruiz, K. Shukla et al. (LIGO Scientific Collaboration and Virgo Collaboration), ApJL 892 L3 (2020).

Model comparison from LIGO–Virgo data on GW170817's binary components and consequences for the merger remnant, B. P. Abbott, F. Hellman, M. Molina-Ruiz, K. Shukla et al. (LIGO Scientific Collaboration and Virgo Collaboration), Class. Quantum Grav. 37 045006 (2020).

Itinerant ferromagnetism and intrinsic anomalous Hall effect in amorphous iron-germanium, D. S. Bouma, Z. Chen, B. Zhang, F. Bruni, M. E. Flatté, A. Ceballos, R. Streubel, L.-W. Wang, R. Q. Wu, and F. Hellman, Phys. Rev. B 101, 014402 (2020).

Search for Gravitational-wave Signals Associated with Gamma-Ray Bursts during the Second Observing Run of Advanced LIGO and Advanced Virgo, B. P. Abbott, F. Hellman, M. Molina-Ruiz, K. Shukla et al. (LIGO Scientific Collaboration and Virgo Collaboration), ApJ 886 75 (2019).

Search for Subsolar Mass Ultracompact Binaries in Advanced LIGO’s Second Observing Run, B. P. Abbott, F. Hellman, M. Molina-Ruiz, K. Shukla et al. (LIGO Scientific Collaboration and Virgo Collaboration), Phys. Rev. Lett. 123, 161102 (2019).

Search for Eccentric Binary Black Hole Mergers with Advanced LIGO and Advanced Virgo during Their First and Second Observing Runs, B. P. Abbott, F. Hellman, M. Molina-Ruiz, K. Shukla et al. (LIGO Scientific Collaboration and Virgo Collaboration), ApJ 883 149 (2019).

Search for intermediate mass black hole binaries in the first and second observing runs of the Advanced LIGO and Virgo network, B. P. Abbott, F. Hellman, M. Molina-Ruiz, K. Shukla et al. (LIGO Scientific Collaboration and Virgo Collaboration), Phys. Rev. D 100, 064064 (2019).

Reconfigurable ferromagnetic liquid droplets, Xubo Liu, Noah Kent, Alejandro Ceballos, Robert Streubel, Yufeng Jiang, Yu Chai, Paul Y. Kim, Joe Forth, Frances Hellman, Shaowei Shi, Dong Wang, Brett A. Helms, Paul D. Ashby, Peter Fischer, Thomas P. Russell, Appl. Phys. Lett. 114, 232407 (2019).

Ultrafast magnetization switching in nanoscale magnetic dots, Amal El-Ghazaly, Brandon Tran, Alejandro Ceballos, Charles-Henri Lambert, Akshay Pattabi, Sayeef Salahuddin, Frances Hellman, and Jeffrey Bokor, Appl. Phys. Lett. 114, 232407 (2019).

All-sky search for short gravitational-wave bursts in the second Advanced LIGO and Advanced Virgo run, B. P. Abbott, F. Hellman, M. Molina-Ruiz, K. Shukla et al. (LIGO Scientific Collaboration and Virgo Collaboration), Phys. Rev. D 100, 024017 (2019).

All-sky search for long-duration gravitational-wave transients in the second Advanced LIGO observing run, B. P. Abbott, F. Hellman, M. Molina-Ruiz, K. Shukla et al. (LIGO Scientific Collaboration and Virgo Collaboration), Phys. Rev. D 99, 104033 (2019).

Effect of strain and thickness on the transition temperature of epitaxial FeRh thin-films, A. Ceballos, Zhanghui Chen, O. Schneider, C. Bordel, Lin-Wang Wang, and F. Hellman, Appl. Phys. Lett. 111, 172401 (2017).

Interface-Induced Phenomena in Magnetism, F. Hellman et al., Rev. Mod. Phys. 89, 025006 (2017).

Ultrathin IBAD MgO films for epitaxial growth on amorphous substrates and sub-50 nm membranes, Siming Wang, C. Antonakos, C. Bordel, D. S. Bouma, P. Fischer, and F. Hellman, Appl. Phys. Lett. 109, 191603 (2016) download

Scaling of the anomalous Hall effect in lower conductivity regimes, J. Karel, C. Bordel, D.S. Bouma, A. De Lorimier-Farmer, H.J. Lee and F. Hellman, EPL, 114 (2016) 57004 download

Spin-Orbit Torques in ferrimagnetic GdFeCo Alloys, N. Roschewsky, T. Matsumura, S. Cheema, F. Hellman, T. Kato, S. Iwata, S. Salahuddin, Appl. Phys. Lett. 109, 112403 (2016) download

Magnetic properties of ultrathin discontinuous Co/Pt multilayers: Comparison with short-range ordered and isotropic CoPt₃ films, M. Charilaou, C. Bordel, P.E. Berche, B.B. Maranville, P. Fischer and F. Hellman, Phys. Rev. B 93, 224408 (2016) download

Effect of chemical order on the magnetic and electronic properties of epitaxial off-stoichiometry Fe_xSi_1-x thin films, J. Karel, J. Juraszek, J. Minar, C. Bordel, K.H. Stone, Y.N. Zhang, J. Hu, R.Q. Wu, H. Ebert, J.B. Kortright and F. Hellman, Phys. Rev. B 91, 144402 (2015) download

Two-level systems in evaporated amorphous silicon, D.R. Queen, X. Liu, J. Karel, H.C. Jacks, T.H. Metcalf and F. Hellman, Journal of Non-Crystalline Solids 426 (2015) 19-24 download

Amorphous Dielectric Thin Films with Extremely Low Mechanical Loss, X. Liu, D.R. Queen, T.H. Metcalf, J.E. Karel and F. Hellman, Archives of Metallurgy and Materials, Volume 60, Issue 1, Pages 359-363, ISSN (Online) 2300-1909 (2015) download

Light-induced metastability in pure and hydrogenated amorphous silicon, D.R. Queen, X. Liu, J. Karel, Q. Wang, R.S. Crandall, T.H. Metcalf and F. Hellman, EPL, 112 (2015) 26001 download

Temperature-driven growth of antiferromagnetic domains in thin-film FeRh, C. Baldasseroni, C. Bordel, C. Antonakos, A. Scholl, K. H. Stone, J.B. Kortright and F. Hellman, J. Phys.: Condens. Matter 27, 256001 (2015) download

Roughness effects in uncompensated antiferromagnets, M. Charilaou and F. Hellman, J. Appl. Phys. 117, 083907 (2015) download

Surface-induced phenomena in uncompensated collinear antiferromagnets, M. Charilaou and F. Hellman, J. Phys.: Condens. Matter 27 (2015) 086001 download

Hydrogen-free amorphous silicon with no tunneling states, X. Liu, Daniel R. Queen, Thomas H. Metcalf, Julie E. Karel and F. Hellman, PRL, 113, 025503 (2014) download

Anomalous magnetic thermodynamics in uncompensated collinear antiferromagnets, M. Charilaou and F. Hellman, EPL, 107 (2014) 27002 download

Magnetization switching and inverted hysteresis in perpendicular antiferromagnetic superlattices, M. Charilaou, C. Bordel, F. Hellman, Appl. Phys. Lett. 104, 212405 (2014) download

Using structural disorder to enhance the magnetism and spin-polarization in Fe_xSi_1-x thin films for spintronics, J. Karel, Y. N. Zhang, C. Bordel, K. H. Stone, T. Y. Chen, C. A. Jenkins, David J. Smith, J Hu, R. Q. Wu, S. M. Heald, J. B. Kortright and F. Hellman, Materials Research Express 1, 026102 (2014) download

Effect of capping material on interfacial ferromagnetism in FeRh thin films, C. Baldasseroni, G. K. Palsson, C. Bordel, S. Valencia, A. A. Unal, F. Kronast, S. Nemsak, C. S. Fadley, J. A. Borchers, B. B. Maranville, and F. Hellman, J. Appl. Phys. 115, 043919 (2014) download

Mean-field simulation of metal oxide antiferromagnetic films and multilayers, M. Charilaou and F. Hellman, Phys. Rev. B 87, 184433 (2013) download

Excess Specific Heat in Evaporated Amorphous Silicon, D. R. Queen, X. Liu, J. Karel, T. H. Metcalf, and F. Hellman, Phys. Rev. Lett. 110, 135901 (2013) download

Electron-Mediated Ferromagnetic Behavior in CoO/ZnO Multilayers, H.-J. Lee, C. Bordel, J. Karel, David W. Cooke, M. Charilaou, and F. Hellman, Phys. Rev. Lett. 110, 087206 (2013) download

Cr(110) texture induced by epitaxy on Al₂O₃(0001) substrates: Preferential grain growth in the <001> direction, Z. Boekelheide and F. Hellman, Appl. Phys. Lett. 102, 141601 (2013) download

Temperature-driven nucleation of ferromagnetic domains in FeRh thin films, C. Baldasseroni, C. Bordel, A. X. Gray, A. M. Kaiser, F. Kronast,J. Herrero-Albillos, C. M. Schneider, C. S. Fadley and F. Hellman, Appl. Phys. Lett. 100, 262401 (2012) download

Thermodynamic Measurements of Fe-Rh Alloys, David W. Cooke, F. Hellman, C. Baldasseroni, C. Bordel, S. Moyerman, and E. E. Fullerton, Phys. Rev. Lett. 109, 255901 (2012) download

Towards analysis of the electron density of states of Nb₃Sn as a function of strain, M. G. T. Mentink, M. M. J. Dhalle, D. R. Dietderich, A. Godeke, W. Goldacker, F. Hellman,and H. H. J. ten Kate, AIP Conf. Proc. 1435, 225 (2012) download

Fe Spin Reorientation across the Metamagnetic Transition in Strained FeRh Thin Films, C. Bordel, J. Juraszek, David W. Cooke, C. Baldasseroni, S. Mankovsky, J. Minár, H. Ebert, S. Moyerman, E. E. Fullerton, and F. Hellman, Phys. Rev. Lett. 109, 117201 (2012) download

Effect of gadolinium adatoms on the transport properties of graphene, M. Alemani, A. Barfuss, B. Geng, C. Girit, P. Reisenauer, M. F. Crommie, F. Wang, A. Zettl, and F. Hellman, Phys. Rev. B 85, 094413 (2012) download

Electronic Structure Changes across the Metamagnetic Transition in FeRh via Hard X-Ray Photoemission, A. X. Gray, D. W. Cooke, P. Krüger, C. Bordel, A. M. Kaiser, S. Moyerman, E. E. Fullerton, S. Ueda, Y. Yamashita, A. Gloskovskii, C. M. Schneider, W. Drube, K. Kobayashi, F. Hellman, and C. S. Fadley, Phys. Rev. Lett. 108, 257208 (2012) download

Chemical ordering in Cr₃Al and relation to semiconducting behavior, Z. Boekelheide, D. A. Stewart, and F. Hellman, Phys. Rev. B 86, 085120 (2012) download

Antiferromagnetism in Cr₃Al and relation to semiconducting behavior, Z. Boekelheide, T. Saerbeck, Anton P. J. Stampfl, R. A. Robinson, D. A. Stewart, and F. Hellman, Phys. Rev. B 85, 094413 (2012) download

Heat transfer simulation and thermal measurements of microfabricated x-ray transparent heater stages, C. Baldasseroni, D. R. Queen, David W. Cooke, K. Maize, A. Shakouri, and F. Hellman, Rev. Sci. Instrum. 82, 093904 (2011) download

Hard x-ray photoemission study of near-Heusler Fe_xSi_1-x alloys, A. X. Gray, J. Karel, J. Minar, C. Bordel, H. Ebert, J. Braun, S. Ueda, Y. Yamashita, L. Ouyang, D. J. Smith, K. Kobayashi, F. Hellman, and C. S. Fadley, Phys. Rev. B, 83, 195112, (2011) download

Calorimetry of epitaxial thin films, David W. Cooke, F. Hellman, J. R. Groves, B. M. Clemens, S. Moyerman, and E. E. Fullerton, Rev. Sci. Instrum. (2011) download

Band gap and electronic structure of an epitaxial, semiconducting Cr_0.80Al_0.20 thin film, DZ. Boekelheide, A. X. Gray, C. Papp, B. Balke, D. A. Stewart, S. Ueda, K. Kobayashi, F. Hellman, and C. S. Fadley, Phys. Rev. Lett. 105, 236404, (2010) download

Effect of magnetic Gd adatoms on the transport properties of ultrathin gold films, M. Alemani, A. Huegel, E. Helgren, D. R. Queen, and F. Hellman, Phys. Rev. B 82, 195447, (2010) download

Distinct local electronic structure and magnetism for Mn in amorphous Si and Ge, Li Zeng, J. X. Cao, E. Helgren, J. Karel, E. Arenholz, Lu Ouyang, David J. Smith, R. Q. Wu, and F. Hellman, Phys. Rev. B 82, 165202, (2010) download

Evidence for nanoscale two-dimensional Co clusters in CoPt₃ films with perpendicular magnetic anisotropy, J. O. Cross, M Newville, B B Maranville, C Bordel, F Hellman and V G Harris, J. Phys.: Condens. Matter 22, 146002, (2010) download

Resonant impurity scattering and electron-phonon scattering in the electrical resistivity of Cr thin films, Z. Boekelheide, David W. Cooke, E. Helgren, and F. Hellman, Phys. Rev. B 80, 134426, (2009) download

Electronic and vibrational density of states through the metal-insulator transition in amorphous yttrium-silicon alloy thin films, B.L. Zink and F. Hellman, Phys. Rev. B 79, 235105, (2009) download

Tracking spin-glass barriers versus field and temperature in a-Gd_0.19Si_0.81, V. Orlyanchik, M.B. Weissman, E. Helgren, L. Zeng, and F. Hellman, Phys. Rev. B 79, 224402 (2009) download

Gate-controlled magnetic properties of the magnetic semiconductor (Zn,Co)O, H.-J. Lee, E. Helgren, and F. Hellman, Applied Physics Letters 94, 212106 (2009) download

Thin film nanocalorimeter for heat capacity measurements of 30 nm films, D.R. Queen and F. Hellman, Review of Scientific Instruments 80, 063901 (2009): selected for the June 15, 2009 issue of Virtual Journal of Nanoscale Science & Technology. download

The role of the spin-density wave and disorder in the density of states of sputtered Cr films, David W.Cooke, Z. Boelkelheide, D.R. Queen, and F. Hellman, J. Appl. Phys. 105, 07C314 (2009) download

Thermodynamic measurements of submilligram bulk samples using a membrane-based 'calorimeter on a chip', D.W. Cooke, K.J. Michel, and F. Hellman, Review of Scientific Instruments 79, 053902 (2008) download

X-ray adsorption study of the electronic structure of Mn-doped amorphous Si, Li Zeng, A. Huegel, E. Helgren, F. Hellman, C. Piamonteze, and E. Arenholz, Appl. Phys. Lett. 92, 142503 (2008) download

Quenched magnetic moment in Mn-doped amorphous Si films, Li Zeng, E. Helgren, M. Rahimi, F. Hellman, R. Islam, B.J. Wilkens, R.J. Culbertson and D. Smith, Phys. Rev. B 77, 073306 (2008) download

Spin-density wave in polycrystalline Cr films from infrared reflectivity, Z. Boekelheide, E. Helgren, F. Hellman, Phys. Rev. B, 76, 224429 (2007) download

Magnetic and transport properties of amorphous Gd_xGe_1-x alloys near the metal-insulator transition, E. Helgren, F. Hellman, Li Zeng, N. Sinenian, R. Islam, and David J. Smith, Phys. Rev. B 76, 184440 (2007) download

Microstructure, magnetotransport, and magnetic properties of Gd-doped amorphous carbon, Li Zeng, E. Helgren, F. Hellman, R. Islam, D. J. Smith, J. W. Ager, III, Phys. Rev. B, 75, 235450 (2007) download

Application of calorimetry on a chip to high-pressure materials, Alexandra Navrotsky, Maria Dorogova, Frances Hellman, David W. Cooke, Barry L. Zink, Charles E. Lesher, Juliana Boerio-Goates, Brian F. Woodfield, Brian Lang, PNAS 104:22, 9187 (2007) download

Concentration dependent microstructure and transport properties of the magnetic semiconductor Gd-Si, Helgren, D. R. Queen, F. Hellman, L. Zeng, R. Islam, David J. Smith, J. Appl. Phys., 101, 093712 (2007) download

Growth and microstructure dependence of electronic and magnetic properties in magnetically doped Gd-Si amorphous semiconductors, L. Zeng, E. Helgren, R. Islam, David J. Smith, F. Hellman, Phys. Rev. B, 75, 184404 (2007) download

Effects of annealing on amorphous Gd_xSi_1-x near the metal-insulator transition, E. Guillotel, L. Zeng, E. Helgren, F. Hellman, R. Islam, David J. Smith, J. Appl. Phys., 101, 023908 (2007) download

Excess modes and enhanced scattering in rare-earth-doped amorphous silicon thin films, B. L. Zink, R. Islam, David J. Smith, F. Hellman, Phys. Rev. B 74, 205209 (2006) download

Thermal conductivity and specific heat of thin-film amorphous silicon, B. L. Zink, R. Pietri, and F. Hellman, Phys. Rev. Lett., 96, 055902 (2006) download

Simulation of clustering and anisotropy due to Co step-edge segregation in vapor deposited CoPt₃, B. B. Maranville, M. Schuerman, and F. Hellman, Phys. Rev. B, 73, 104435 (2006) download

Field- and concentration-tuned scaling of a quantum phase transition in a magnetically doped semiconductor, E. Helgren, L. Zeng, K. Burch, D. Basov, and F. Hellman, Phys. Rev. B, 73, 155201 (2006) download

Magnetic rare earth (Gd) implanted tetrahedral amorphous carbon (ta-C), L. Zeng, E. Helgren, H. Zutz, C. Ronning, F. Hellman, Mater. Res. Soc. Symp. Proc. 941, Q08-22 (2006) download

Prototype of a radiation hard resistive bolometer for ITER, L. Giannone, D. R. Queen, F. Hellman, and J. C. Fuchs, Plasma Phys. Control. Fusion 47, 2123-2143 (2005) download

Beneficial effects of annealing on amorphous Nb-Si thin film thermometers, D. Querlioz, E. Helgren, D. R. Queen, F. Hellman, R. Islam, David J. Smith, Appl. Phys. Lett. 87, 221901 (2005) download

Si-N membrane-based microcalorimetry: Heat capacity and thermal conductivity of thin films, B. Revaz, B.L. Zink and F. Hellman, Thermochimica Acta 432 (2005) 158¨C168 download

Measurement of Thermal Conductivity of Thin Films with a Micromachined Membrane Calorimeter, B. L. Zink, B. Revaz, J. J. Cherry, and F. Hellman, Rev. Sci. Instr. 76, 24901-5 (2005) download

Characteristic temperature in magnetically-doped amorphous semiconductors, E. Helgren, J. Cherry, L. Zeng, F. Hellman, Phys. Rev. B 71, 113203 (2005) download

Interplay between charge localization and magnetic ordering in amorphous Gd_xSi_1-x, N. K. Chumakov, S. V. Gudenko, V. V. Tugushev, A. B. Davydov, V. I. Ozhogin, E. Helgren, and F. Hellman, J. Magn. Magn. Mat., 272-276, 1351-2 (2004) download

Variation of the density of states in amorphous GdSi at the metal-insulator transition, L. Bokacheva, W. Teizer, F. Hellman, and R. C. Dynes, Phys. Rev. B 69, 235111 (2004) download

Specific Heat and Thermal Conductivity of Low-Stress Amorphous Si-N Membranes, B. L. Zink and F. Hellman, Sol. St. Comm. 129, (2004) download

AFM Excitations in the Specific Heat of La₂CuO_4.11 Single Crystals, G. A. Jorge, M. Jaime, L. Civale, C. Batista, B. L. Zink, F. Hellman, B. Khaykovich, M. A. Kastner, Y. S. Lee, and R. J. Birgeneau, Phys Rev B 69, 174506 (2004) download

Numerical Simulation of the Heat Transfer in a-Si-N-Membrane Based Microcalorimeters, B. Revaz, D. O'Neil, L. Hull, and F. Hellman, Rev. Sci. Instr. 74, 4389 (2003) download

Spin Polarized Tunneling at the Metal-Insulator Transition, W. Teizer, F. Hellman and R. C. Dynes, Int'l J. of Mod. Physics B, Vol. 0, 1-3, 2003 download

XAFS Study of Local Disorder in a-Gd_xSi_1-x Amorphous Magnetic Semiconductor, D. Haskel, J. W. Freeland, J. Cross, R. Winarski, M. Newville, and F. Hellman, Phys. Rev. B 67, 115207 (2003) download

Mean Field Behavior with Gaussian Fluctuations at the Ferromagnetic Phase Transition of SrRuO₃, D. Kim, B. L. Zink, F. Hellman, S. McCall, G. Cao, and J. E. Crow, Phys. Rev. B Rapid Communications 67, 100406 (2003) download

Flux Pinning Enhancement in Ferromagnetic and Superconducting Thin Film Multilayer, D.B. Jan, J.Y. Coulter, B.B. Maranville, M.E. Hawley, L.N. Bulaevskii, M.P. Maley, F. Hellman, X.Q. Pan, and Q.X. Jia, Appl. Phys. Lett. 82, 778 (2003) download

The Hall Effect at a Tunable Metal-Insulator Transition, W. Teizer, F. Hellman, and R.C. Dynes, Phys. Rev. B Rapid Communications 67, 121102 (2003) download

Finite Size Effects on the Moment and Ordering Temperatures in Antiferromagnetic CoO Layers, Y. J. Tang, D. J. Smith, B. L. Zink, F. Hellman, and A. E. Berkowitz, Phys. Rev. B. 67, 054408 (2003) download

Magnetic and Transport Properties of Amorphous Tb-Si Alloys Near the Metal-Insulator Transition, M. Liu and F. Hellman, Phys. Rev. B. 67, 054401 (2003) download

High Field Magneto-Optic Measurements of Amorphous Gd-Si Alloys, F. Hellman, W. Geerts and B. Donehew, Phys. Rev. B. 67, 012406 (2003) download

Structural and Magnetic Length Scales in Amorphous TbFe₂, T. C. Hufnagel and F. Hellman, J. Magn. Magn. Mat. 256/1-3, 322 (2003) download

Magnetic Moments and Interactions Near the Metal-Insulator Transition in Amorphous Magnetic Semiconductors, B. L. Zink, V. Preisler, D. R. Queen, and F. Hellman, Phys. Rev. B 66, 19528 (2002) download

Oxygen-Assisted Room-Temperature Deposition of CoPt₃ Films with Perpendicular Magnetic Anisotropy, B. B. Maranville and F. Hellman, Appl. Phys. Lett. 81, 4011-13 (2002) download

Tricritical Point and the Doping Dependence of the Order of the Ferromagnetic Phase Transition of La_1-xCa_xMnO₃, D. Kim, B. Revaz, B. L. Zink, F. Hellman, J. F. Mitchell and J. J. Rhyne, Phys. Rev. Lett. 89, 7202-06 (2002) download

Enhancement of the electronic contribution to the low temperature specific heat of an Fe/Cr magnetic multilayer, B. Revaz, M.-C. Cyrille, B. Zink, I. K. Schuller and F. Hellman, Phys. Rev. B 65, 944171 (2002) download

Thin Film Microcalorimeter for Heat Capacity Measurements in High Magnetic Fields, B. L. Zink, B. Revaz, R. Sappey, F. Hellman, Rev. Sci. Instr. 73, 1841 (2002) download

Infrared probe of metal-insulator transition in Si_1-xGd_x and Si_1-xY_x amorphous alloys in magnetic field, D. N. Basov, A. M. Bratkovsky, P. F. Henning, B. Zink, F. Hellman, C. C. Homes, and M. Strongin, Europhys. Lett. 57, 240-6 (2002) download

Critical properties of La_1-xSr_xMnO₃, D. Kim, F. Hellman, and J. M. D. Coey, Phys. Rev. B 65, 214424 (2002) download

Miscut-angle dependence of perpendicular magnetic anisotropy in thin epitaxial CoPt₃ films grown on vicinal MgO, B. B. Maranville, A. L. Shapiro, F. Hellman, D. M. Schaadt and E. T. Yu, Appl. Phys. Lett. 81, 517 (2002) download

Thin film microcalorimeter for measurement of specific heat in high magnetic fields, B. L. Zink, B. Revaz, R. Sappey and F. Hellman, Rev. Sci. Instrum. 73, 1841 (2002) download

Magnetic Anisotropy in Films, F. Hellman, article in the Encyclopedia of Materials: Science and Technology, Elsevier (in press).

Enhancement of the electronic contribution to the low temperature specific heat of Fe/Cr magnetic multilayer, B. Revaz, M.-C. Cyrille, B. L. Zink, I. K. Schuller and F. Hellman, Phys. Rev. B 65, 094417 (2002) download

Ion-beam assisted growth of perpendicular anisotropy materials, D. Vasumathi, B. M. Maranville, and F. Hellman, Appl. Phys. Lett. 79, 2782 (2001) download

Growth-induced perpendicular magnetic anisotropy and clustering in Ni_xPt_1-x alloys, D. Vasumathi, A. L. Shapiro, B. B. Maranville, and F. Hellman J. Magn. Magn. Mat. 223, 221 (2001) download

The Density of States of Amorphous Gd_xSi_1-x at the Metal-Insulator Transition, W. Teizer, F. Hellman, and R. C. Dynes, Phys. Rev. Lett. 85, 848 (2000) download

Spin Glass Freezing and RKKY Interactions Near the Metal-Insulator Transition in Amorphous Gd-Si Alloys, W. Teizer, F. Hellman, and R. C. Dynes, Phys. Rev. Lett. 85, 848 (2000) download

The Density of States of Amorphous Gd_xSi_1-x at the Metal-Insulator Transition, F. Hellman, D. R. Queen, R. M. Potok, and B. L. Zink, Phys. Rev. Lett. 84, 5411 (2000) download

Magnetic Field Induced Insulator-Metal Transition in a-Gd_xSi_1-x, W. Teizer, F. Hellman, and R. C. Dynes, Solid State Communications 114, 81 (2000) download

Growth-Induced Magnetic Anisotropy and Clustering in Vapor-Deposited Co-Pt Alloy Films, A. L. Shapiro, P.W. Rooney, M. Q. Tran, F. Hellman, K. M. Ring, K. L. Kavanagh, B. Rellinghaus, and D.Weller, Phys Rev. B 60, R12826 (1999) download

Suppression of growth-induced perpendicular magnetic anisotropy in Co-Pt alloys by trace amounts of Si, A. L. Shapiro, O. Vajk, B. M. Maranville, and F. Hellman,Appl. Phys. Lett. 75, 4177 (1999) download

Large Magnetic Entropy in Giant Magnetoresistive Amorphous Gadolinium Silicon, B. L. Zink, E. Janod, K. Allen, F. Hellman,Phys. Rev. Lett. 83, 2266 (1999) download

Specific Heat of Endohedral and Higher Fullerene Thin Films, K. Allen, F. Hellman, Journal of Chemical Physics, vol.111, (no.12), AIP, 22 Sept. 1999. p.5291-4 download

Specific Heat of C₆₀ and K₃C₆₀ Thin Films, 6-400 K, K. Allen, F. Hellman, Phys Rev. B 60, R11765 (1999) download

Long Ferromagnetic Correlation Length in Amorphous TbFe₂, F. Hellman, A. L. Shapiro, E. N. Abarra, R. A. Robinson, R. P. Hjelm, P.A. Seeger, J. J. Rhyne, and J. I. Suzuki, Phys. Rev. B 59, 11408 (1999) download

Low temperature Magnetoresistance in Insulating a-Si:Gd Alloys, P. Xiong, B. L. Zink, S. I. Applebaum, F. Hellman, and R. C. Dynes, Phys. Rev. B 59, R3929 (1999) download

Coercivity in Amorphous Tb-Fe alloys, F. Hellman, M. Messer, and E. N. Abarra, J. Appl. Phys. 86, 1047 (1999) download

Specific heat of amorphous rare-earth-transition-metal films, F. Hellman, E. N. Abarra, A. L. Shapiro, R. B. van Dover, Phys. Rev. B 58, 5672 (1998) download

Destruction of Superconductivity in the Narrow-band Metal, K₃C₆₀ , Susan Watson, Kimberly Allen, D. W. Denlinger, and F. Hellman, Phys. Rev. B 55, 3866 (1997). (abstract) download

Metal-Insulator Transition and Giant Negative Magnetoresistance in Amorphous Magnetic Rare Earth Silicon Alloys, F. Hellman, M. Q. Tran, A. E. Gebala, E. M. Wilcox, and R. C. Dynes, Phys. Rev. Lett. 22, 4652 (1996). (abstract) download

Thermodynamic Measurements of Magnetic Ordering in Antiferromagnetic Superlattices, E. N. Abarra, K. Takano, A. E. Berkowitz, and F. Hellman, Phys Rev Lett 77, 3451 (1996) download

Evidence of a Surface-Mediated Magnetically-Induced Miscibility Gap in Co-Pt Alloy Thin Films, P.W. Rooney, A. L. Shapiro, M. Q. Tran, and F. Hellman, Phys. Rev. Lett. 75, 1843 (1995) download

Thin Film Microcalorimeter for Heat Capacity Measurements from 1.5 to 800 K, D. W. Denlinger, E. N. Abarra, Kimberly Allen, P. W. Rooney, S. K. Watson, and F. Hellman , Rev. Sci. Instrum. 65, 946 (1994). (abstract) download

Surface-induced Ordering: A Model for Vapor-deposition Growth of Amorphous Materials, F. Hellman, Appl. Phys. Lett. 64, 1947 (1994) download