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William E. Bailey Associate Professor tel: (212) 854-3090 |
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Awards
NSF CAREER Award, 2003: "Atomic-scale engineering and in-situ analysis of materials for spin electronics." ARO Young Investigator Award, 2002: "Atomic-scale engineering of GHz magnetization dynamics" NRC Postdoctoral Fellow, 1999-2001: Held: NIST, Boulder CO ONR Graduate Fellow, 1993-1997: Held: Stanford University |
My research interests are in the area of materials for spin electronics. Spin electronics exploits an internal degree of freedom of the electron, the spin, as well as its charge. Starting in 1998, spin electronics has moved from laboratory curiosity to $100B/year industry, implemented in magnetic information storage--hard disks, and future nonvolatile memory--by companies such as IBM, Seagate, and Motorola. Low Ghz loss in epitaxial ferromagnets Element- and layer-resolved magnetization dynamics We have developed the first element and layer-resolved measurement of magnetization precession. The technique uses a stroboscopic measurement of soft x-ray absorption (circular dichroism), synchronized with applied pulsed magnetic fields. Our present demonstration of 5 ps temporal resoution is the fastest in synchrotron-based magnetization dynamics measurments. Project in collaboration with Dario Arena and Elio Vescovo, National Synchrotron Light Source, carried out at the Advanced Photon Source. Pumped spin currents for gated bandwidth |
Selected Publications
"Low relaxation rate in epitaxial vanadium-doped ultrathin iron films," C. Scheck, L. Cheng, I. Barsukov, Z. Frait, and W.E. Bailey, Physical Review Letters 98(11) 117601 (2007) (link) "Low damping in epitaxial sputtered iron films," C. Scheck, L. Cheng, and W.E. Bailey, Applied Physics Letters 88(25) 252510 (2006) (link) "Weakly coupled motion of individual layers in ferromagnetic resonance," D.A. Arena, E. Vescovo, C.-C. Kao, Y. Guan, and W.E. Bailey, Physical Review B 74(6) 064409 (2006) (link) "Dual-frequency ferromagnetic resonance," |