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Roy F. Willis, Ph.D. - Publications

Affiliations: 
Physics Pennsylvania State University, State College, PA, United States 
Area:
Condensed Matter Physics
Website:
http://www.phys.psu.edu/people/rfw4
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72 high-probability publications. We are testing a new system for linking publications to authors. You can help! If you notice any inaccuracies, please sign in and mark papers as correct or incorrect matches. If you identify any major omissions or other inaccuracies in the publication list, please let us know.

Year Citation  Score
2010 Bramfeld TS, Won H, Willis RF. Abrupt dimensionality crossover in thin-film ferromagnets: Quantum size effect Journal of Applied Physics. 107: 09E150. DOI: 10.1063/1.3366617  0.496
2010 Won H, Willis RF. A STM point-probe method for measuring sheet resistance of ultrathin metallic films on semiconducting silicon Surface Science. 604: 491-495. DOI: 10.1016/J.Susc.2009.11.028  0.605
2009 Podolak KR, Willis RF, Wilson MJ, Schiffer PE, Norman TA, Altmann KN. Local and nonlocal magnetic behavior of dilute manganese-doped nickel alloys Journal of Applied Physics. 105. DOI: 10.1063/1.3116154  0.807
2008 Bramfeld TS, Willis RF. Temperature-dependent crossover of dimensionality in ultrathin nickel films Journal of Applied Physics. 103: 07C718. DOI: 10.1063/1.2839624  0.455
2007 Willis RF, Bramfeld TS, Podolak KR. Finite-size nanoscaling of the critical temperature of ferromagnets with variable range of spin interactions Journal of Applied Physics. 101. DOI: 10.1063/1.2672494  0.784
2005 Janke-Gilman N, Altmann KN, Himpsel FJ, Willis RF. Tuning the spin-flip gap in transition-metal magnets by alloying. Physical Review B. 72: 64420. DOI: 10.1103/Physrevb.72.064420;  0.427
2005 Janke-Gilman N, Willis RF. Distinguishing magnetic-moment and magnetic-ordering behavior in transition metal alloys Journal of Magnetism and Magnetic Materials. 290: 584-587. DOI: 10.1016/J.Jmmm.2004.11.270  0.705
2004 Janke-Gilman N, Hochstrasser M, Willis RF. Measuring atomic moment and magnetic order through magnetic linear dichroism with angular dependence studies of transition-metal alloys Physical Review B. 70. DOI: 10.1103/Physrevb.70.184439  0.499
2001 Altmann KN, Gilman N, Hayoz J, Willis RF, Himpsel FJ. Effect of magnetic doping on the electronic states of Ni. Physical Review Letters. 87: 137201. PMID 11580621 DOI: 10.1103/Physrevlett.87.137201  0.47
2001 Zhang R, Willis RF. Thickness-dependent Curie temperatures of ultrathin magnetic films: effect of the range of spin-spin interactions. Physical Review Letters. 86: 2665-8. PMID 11290006 DOI: 10.1103/Physrevlett.86.2665  0.633
2000 Schumann FO, Willis RF, Tobin JG. Surface-sensitive, element-specific magnetometry with X-ray linear dichroism Journal of Vacuum Science and Technology a: Vacuum, Surfaces and Films. 18: 1259-1263. DOI: 10.1116/1.582336  0.476
2000 Altmann KN, Petrovykh DY, Mankey GJ, Shannon N, Gilman N, Hochstrasser M, Willis RF, Himpsel FJ. Enhanced spin polarization of conduction electrons in Ni explained by comparison with Cu Physical Review B. 61: 15661-15666. DOI: 10.1103/Physrevb.61.15661  0.616
2000 Yoon M, Mai H, Lee G, Willis R. Stabilizing influence of double bonds on the Si(111)-(3×1) and Ge(111)-(3×1) surface reconstructions: new experimental evidence Surface Science. 463: 183-190. DOI: 10.1016/S0039-6028(00)00601-4  0.493
1999 Hochstrasser M, Schumann FO, Willis RF, Cummins T, Waddill GD, Mishra SR, Tobin JG, Rotenberg E. Fermi surface study of pseudomorphic Fe1−xNix and Co1−xNix thin films on Cu(100) Journal of Vacuum Science & Technology a: Vacuum, Surfaces, and Films. 17: 1322-1325. DOI: 10.1116/1.581814  0.56
1999 Hochstrasser M, Gilman N, Willis RF, Schumann FO, Tobin JG, Rotenberg E. Photoemission study of Fermi surfaces of pseudomorphic Co, Ni, and Co x Ni 1 − x films on Cu(100) Physical Review B. 60: 17030-17036. DOI: 10.1103/Physrevb.60.17030  0.518
1999 Schumann FO, Hochstrasser M, Willis RF, Goodman KG, Tobin JG. On the magnetic instability of ultrathin FCC FexNi1-x films Journal of Magnetism and Magnetic Materials. 198: 522-524. DOI: 10.1016/S0304-8853(98)01238-4  0.492
1998 Tobin J, Goodman K, Schumann F, Willis R, Kortright J, Denlinger J, Rotenberg E, Warwick A, Smith N. Direct extraction of exchange splittings from magnetic X-ray dichroism in photoelectron spectroscopy Surface Science. 395: L227-L235. DOI: 10.1016/S0039-6028(97)00831-5  0.395
1997 Goodman K, Tobin J, Schumann F, Willis R, Gammon J, pappas D, Kortright J, Denlinger J, Rotenberg E, Warwick A, Smith N. Effects of Symmetry on Circular and Linear Magnetic Dichroism in Angle-Resolved Photoemission Spectra of Gd/Y(0001) and Fe-Ni/Cu(001) Mrs Proceedings. 475. DOI: 10.1557/Proc-475-493  0.535
1997 ORTEGA JE, HIMPSEL FJ, MANKEY GJ, WILLIS RF. QUANTUM WELL STATES IN METALLIC THIN LAYERS Surface Review and Letters. 4: 361-370. DOI: 10.1142/S0218625X97000365  0.655
1997 Tobin JG, Goodman KW, Schumann FO, Willis RF, Kortright JB, Denlinger JD, Rotenberg E, Warwick A, Smith NV. Generalized description of magnetic x-ray circular dichroism in Fe 3p photoelectron emission Journal of Vacuum Science and Technology a: Vacuum, Surfaces and Films. 15: 1766-1769. DOI: 10.1116/1.580866  0.396
1997 Gammon WJ, Mishra SR, Pappas DP, Goodman KW, Tobin JG, Schumann FO, Willis R, Denlinger JD, Rotenberg E, Warwick A, Smith NV. Comparison of magnetic linear dichroism in 4f photoemission and 4d-4f photoemission from Gd on Y(0001) Journal of Vacuum Science and Technology a: Vacuum, Surfaces and Films. 15: 1755-1758. DOI: 10.1116/1.580864  0.351
1997 Wu SZ, Schumann FO, Willis RF, Goodman KW, Tobin JG, Carr R. Magnetic dichroism effect of binary alloys using a circularly polarized x ray Journal of Vacuum Science & Technology a: Vacuum, Surfaces, and Films. 15: 2287-2290. DOI: 10.1116/1.580736  0.534
1997 Schumann FO, Willis RF, Goodman KG, Tobin JG. Magnetic Instability of Ultrathin fccFexNi1−xFilms Physical Review Letters. 79: 5166-5169. DOI: 10.1103/Physrevlett.79.5166  0.453
1997 Schumann FO, Wu SZ, Mankey GJ, Willis RF. Growth and magnetic properties ofCoxNi1−xandFexNi1−xultrathin films on Cu(100) Physical Review B. 56: 2668-2675. DOI: 10.1103/Physrevb.56.2668  0.689
1997 WILLIS RF. ITINERANT MAGNETISM IN ULTRATHIN METALLIC FILMS Progress in Surface Science. 54: 277-286. DOI: 10.1016/S0079-6816(97)00009-9  0.468
1996 Tobin J, Goodman K, Mankey G, Willis R, Denlinger J, Rotenberg E, Warwick A. Correlation Of Magnetic Dichroism in X-Ray Absorption and Photoelectron Emission using Ultrathin Magnetic Alloy Films Mrs Proceedings. 437. DOI: 10.1557/Proc-437-61  0.673
1996 Schumann FO, Wu SZ, Mankey GJ, Willis RF. Growth and magnetic properties of FexNi1−x ultrathin films on Cu(100) Journal of Applied Physics. 79: 5635. DOI: 10.1063/1.362265  0.697
1996 Tobin JG, Goodman KW, Mankey GJ, Willis RF, Denlinger JD, Rotenberg E, Warwick A. Magnetic x-ray linear dichroism in the photoelectron spectroscopy of ultrathin magnetic alloy films Journal of Applied Physics. 79: 5626. DOI: 10.1063/1.362262  0.723
1996 Lin XF, Chizhov I, Mai HA, Willis RF. Scanning tunneling spectroscopy examination of surface electronic structures of surface Applied Surface Science. 223-227. DOI: 10.1016/S0169-4332(96)00148-1  0.314
1996 Lin X, Chizhov I, Mai H, Willis R. Interaction of Sn atoms with the intrinsic dangling-bond states of Si(111)-(7 × 7) Surface Science. 366: 51-59. DOI: 10.1016/0039-6028(96)00799-6  0.31
1995 Wu S, Schumann F, Mankey G, Willis R. Magnetic Behavior of Ultrathin Films of Pseudomorphic Binary Alloys Mrs Proceedings. 400. DOI: 10.1557/Proc-400-323  0.701
1995 Mankey GJ, Wu SZ, Schumann FO, Huang F, Kief MT, Willis RF. Magnetic properties of pseudomorphic ferromagnetic alloy films on Cu(100) Journal of Vacuum Science and Technology a: Vacuum, Surfaces and Films. 13: 1531-1533. DOI: 10.1116/1.579721  0.691
1995 Wu SZ, Mankey GJ, Willis RF. Effect of substrate symmetry on the preferred magnetization orientation of Ni films on Cu Journal of Vacuum Science and Technology a: Vacuum, Surfaces and Films. 13: 1497-1500. DOI: 10.1116/1.579694  0.719
1995 Himpsel FJ, Ortega JE, Mankey GJ, Willis RF. Electronic structure of multilayers: nature of the magnetic interlayer interaction Vacuum. 46: 1133-1136. DOI: 10.1016/0042-207X(95)00123-9  0.695
1994 Huang F, Kief MT, Mankey GJ, Willis RF. Magnetism in the few-monolayers limit: A surface magneto-optic Kerr-effect study of the magnetic behavior of ultrathin films of Co, Ni, and Co-Ni alloys on Cu(100) and Cu(111). Physical Review. B, Condensed Matter. 49: 3962-3971. PMID 10011291 DOI: 10.1103/Physrevb.49.3962  0.706
1994 Kim J, Gallagher MC, Willis RF, Fu J, Miller DL. Defect structure of GaAs(111)B (2×2) surface observed by scanning tunneling microscopy Journal of Vacuum Science & Technology a: Vacuum, Surfaces, and Films. 12: 2145-2148. DOI: 10.1116/1.579152  0.303
1994 Mankey GJ, Willis RF, Ortega JE, Himpsel FJ. Quantum size effects in ultrathin Cu(100) films Journal of Vacuum Science and Technology a: Vacuum, Surfaces and Films. 12: 2183-2186. DOI: 10.1116/1.579110  0.664
1994 Wu SZ, Mankey GJ, Huang F, Willis RF. Spin reorientation transition in Ni films on Cu(100) Journal of Applied Physics. 76: 6434-6436. DOI: 10.1063/1.358240  0.717
1994 Huang F, Mankey GJ, Willis RF. Interfacial anisotropy and magnetic transition of cobalt films on Cu(111) Journal of Applied Physics. 75: 6406-6408. DOI: 10.1063/1.355366  0.707
1994 Himpsel FJ, Mo YW, Jung T, Ortega JE, Mankey GJ, Willis RF. Quantum well and quantum wire states at metal surfaces Superlattices and Microstructures. 15: 237. DOI: 10.1006/Spmi.1994.1048  0.683
1993 Mankey GJ, Willis RF, Himpsel FJ. Band structure of the magnetic fcc pseudomorphs: Ni(100), Co(100), and Fe(100). Physical Review. B, Condensed Matter. 48: 10284-10291. PMID 10007306  0.623
1993 Ortega JE, Himpsel FJ, Mankey GJ, Willis RF. Quantum-well states and magnetic coupling between ferromagnets through a noble-metal layer. Physical Review. B, Condensed Matter. 47: 1540-1552. PMID 10006170 DOI: 10.1103/Physrevb.47.1540  0.665
1993 Mankey GJ, Willis RF, Himpsel FJ. Unoccupied electronic states of ultrathin films of Co/Cu(111) and Fe/Cu(111). Physical Review. B, Condensed Matter. 47: 190-196. PMID 10004433 DOI: 10.1103/Physrevb.47.190  0.658
1993 Ortega JE, Himpsel FJ, Mankey GJ, Willis RF. Electronic States in Magnetic Quantum Wells Mrs Proceedings. 313. DOI: 10.1557/Proc-313-143  0.628
1993 Fu J, Miller DL, Kim J, Gallagher MC, Willis RF. Migration Enhanced Epitaxy of GaAs Studied by Reflection High Energy Electron Diffraction and Scanning Tunneling Microscopy Mrs Proceedings. 312. DOI: 10.1557/Proc-312-339  0.318
1993 Mankey GJ, Kief MT, Huang F, Willis RF. Hydrogen Chemisorption on Ferromagnetic Thin Film Surfaces Journal of Vacuum Science and Technology a: Vacuum, Surfaces and Films. 11: 2034-2039. DOI: 10.1116/1.578405  0.711
1993 Ortega JE, Himpsel FJ, Mankey GJ, Willis RF. Electronic states in magnetic quantum wells and monolayers Journal of Physics: Condensed Matter. 5. DOI: 10.1088/0953-8984/5/33A/055  0.687
1993 Ortega JE, Himpsel FJ, Mankey GJ, Willis RF. Quantum well states and magnetic coupling between noble metals and ferromagnets (invited) Journal of Applied Physics. 73: 5771-5775. DOI: 10.1063/1.353569  0.666
1993 Huang F, Mankey GJ, Kief MT, Willis RF. Finite-size scaling behavior of ferromagnetic thin films Journal of Applied Physics. 73: 6760-6762. DOI: 10.1063/1.352477  0.626
1993 Huang F, Mankey GJ, Willis RF. Influence of film morphology on thin film ferromagnetism Surface Science. 297. DOI: 10.1016/0039-6028(93)90251-E  0.698
1992 Jeon D, Kim J, Gallagher MC, Willis RF. Scanning tunneling spectroscopic evidence for granular metallic conductivity in conducting polymeric polyaniline. Science (New York, N.Y.). 256: 1662-4. PMID 17841086 DOI: 10.1126/Science.256.5064.1662  0.334
1992 Jeon D, Hashizume T, Sakurai T, Willis RF. Structural and electronic properties of ordered single and multiple layers of Na on the Si(111) surface. Physical Review Letters. 69: 1419-1422. PMID 10047212 DOI: 10.1103/Physrevlett.69.1419  0.319
1992 Gallagher M, Prince R, Willis R. On the atomic structure and electronic properties of decapped GaAs(001)(2 × 4) surfaces Surface Science. 275: 31-40. DOI: 10.1016/0039-6028(92)90646-N  0.319
1991 Mankey GJ, Kief MT, willis RF. The effect of microstructure on the magnetic behavior of epitaxial cobalt layers Journal of Vacuum Science and Technology a: Vacuum, Surfaces and Films. 9: 1595-1598. DOI: 10.1116/1.577666  0.69
1991 Kief MT, Mankey GJ, Willis RF. Reorientation phase transition behavior in metastable epitaxial cobalt-copper alloys Journal of Applied Physics. 70: 5929-5931. DOI: 10.1063/1.350108  0.707
1991 Kief MT, Mankey GJ, Willis RF. Micromagnetic properties of ultrathin cobalt films Journal of Applied Physics. 69: 5000-5002. DOI: 10.1063/1.348151  0.685
1990 Kief MT, Mankey GJ, Willis RF. The effect of chemisorption on the magnetic behavior of metastable layers of fcc Co(001) and Fe(001) (abstract) Journal of Applied Physics. 67: 5416. DOI: 10.1063/1.344573  0.728
1990 Mankey GJ, Kief MT, Willis RF. Kinetics of hydrogen chemisorption on epitaxial ferromagnetic layers of fcc cobalt on copper(001) Journal of Electron Spectroscopy and Related Phenomena. 54: 501-507. DOI: 10.1016/0368-2048(90)80242-3  0.612
1989 Rous PJ, Palmer RE, Willis RF. Resonance electron scattering from adsorbed molecules: Angular distribution of inelastically scattered electrons and application to physisorbed O2 on graphite. Physical Review. B, Condensed Matter. 39: 7552-7560. PMID 9947434  0.377
1989 Schwarzacher W, Allison W, Willis R, Penfold J, Ward R, Jacob I, Egelhoff W. Variation in magnetic properties of Cu/fcc Fe/Cu (001) sandwich structures Solid State Communications. 71: 563-566. DOI: 10.1016/0038-1098(89)90536-X  0.309
1988 Palmer RE, Rous PJ, Wilkes JL, Willis RF. Determination of adsorbate molecular orientation from resonance electron-scattering angular distributions. Physical Review Letters. 60: 329-332. PMID 10038514 DOI: 10.1103/PhysRevLett.60.329  0.399
1988 Annett JF, Palmer RE, Willis RF. Surface dielectric response of a semimetal: Electron-energy-loss spectroscopy of graphite. Physical Review. B, Condensed Matter. 37: 2408-2414. PMID 9944785  0.408
1988 Willis RF, Morra R, d'Almeida F, Mankey G, Kief M. Epitaxial Layers of FCC FE on CU(001) Mrs Proceedings. 143. DOI: 10.1557/Proc-143-298  0.704
1988 Willis RF, Bland JAC, Schwarzacher W. Ferromagnetism in ultrathin metastable films of fcc Fe, Co, and Ni (invited) Journal of Applied Physics. 63: 4051-4056. DOI: 10.1063/1.340545  0.334
1988 Palmer R, Wilkes J, Willis R. An electron energy loss spectroscopy study of O2 and H2 physisorbed on graphite Vacuum. 38: 271-274. DOI: 10.1016/0042-207X(88)90059-0  0.394
1987 Pescia D, Zampieri G, Stampanoni M, Bona GL, Willis RF, Meier F. Ferromagnetism of thin epitaxial fcc cobalt films on Cu(001) obesrved by spin-polarized photoemission. Physical Review Letters. 58: 933-936. PMID 10035076 DOI: 10.1103/PhysRevLett.58.933  0.331
1987 Palmer RE, Annett JF, Willis RF. Loss structure in the electron-energy-loss excitation continuum of a semimetal. Physical Review Letters. 58: 2490-2493. PMID 10034762 DOI: 10.1103/PhysRevLett.58.2490  0.379
1987 Pescia D, Stampanoni M, Bona GL, Vaterlaus A, Willis RF, Meier F. Magnetism of epitaxial fcc: Iron films on Cu(001) investigated by spin-polarized photoelectron emission. Physical Review Letters. 58: 2126-2129. PMID 10034655 DOI: 10.1103/PhysRevLett.58.2126  0.377
1987 Bland JA, Pescia D, Willis RF. Ferromagnetic moments in metastable magnetic films by spin-polarized-neutron reflection. Physical Review Letters. 58: 1244-1247. PMID 10034379 DOI: 10.1103/PhysRevLett.58.1244  0.389
1984 Amiri-Hezaveh A, Jennings G, Joyner DJ, Willis RF. ELECTRONIC AND MAGNETIC STATES OF ULTRA-THIN Fe FILMS Le Journal De Physique Colloques. 45: C5-371-C5-371. DOI: 10.1051/jphyscol:1984557  0.401
1979 Christensen NE, Willis RF. Secondary electron emission from tungsten. Observation of the electronic structure of the semi-infinite crystal Journal of Physics C: Solid State Physics. 12: 167-207. DOI: 10.1088/0022-3719/12/1/025  0.303
1972 SCRUTON B, TABOR D, WILLIS RF. Shear Strength of Lubricant Monolayers Nature Physical Science. 236: 59-60. DOI: 10.1038/Physci236059A0  0.464
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