Hammel Group Publications

H A M M E L G R O U P
P U B L I C A T I O N S Solid State Quantum Computing and Spin Electronics "Seeing Single Spins" Nature 430, 300 (2004) "The magnetic-resonance force microscope: a new tool for high-resolution, 3-D, subsurface scanned probe imaging" Proceedings of the IEEE, 91 (2003) "Magnetic Resonance Force Microscopy and the Solid State Quantum Computer" Proc. SPIE 4656, p. 1-9 (2003) "Magnetic Resonance Force Microscopy Quantum Computer with Tellurium Donors in Silicon" Phys. Rev. Lett. 86, 2894 (2001) "Solid-state nuclear-spin quantum computer based on magnetic resonance force microscopy" Phys. Rev. B 61, 14694 (2000) "Static Stern-Gerlach effect in magnetic force microscopy" Physical Review A 65, 032311 (2002). "Application of magnetic resonance force microscopy cyclic adiabatic inversion for a single-spin measurement" J. Phys. A 36, 4417 (2003)
Ferromagnetic Resonance Using MRFM
We have been performing MRFM detected FMR as a microscopic probe of magnetic thin film materials. MRFM can enable microscopic characterization of magnetic homogeneity and interlayer exchange coupling. Please see some of our recent publications. "Ferromagnetic resonance force microscopy studies of arrays of micron size permalloy dots" Physical Review B 74, 144424 (2006) URL: PhysRevB_74_144424 "Perturbation of magnetostatic modes observed by ferromagnetic resonance force microscopy" Physical Review B 73, 212410 (2006) URL: PhysRevB_73_212410 "Origin of fourfold anisotropy in square lattices of circular ferromagnetic dots" Physical Review B 73, 212410 (2006) URL: http://link.aps.org/abstract/PRB/v74/e060406 "Light-free magnetic resonance force microscopy for studies of electron spin polarized systems," J. Magn. Magn. Matls., 286, 324 (2005) URL: http://link.aps.org/abstract/PRB/v74/e060406 "Imaging mechanisms of force detected FMR microscopy" J. Appl. Phys., 87, 6493 (2000) (LAUR 00-2495) "Observation of Ferromagnetic Resonance in a Microscopic Sample Using Magnetic Resonance Force Microscopy" Appl. Phys. Lett. 68, 2005 (1996) (LAUR-95-3828) "Ferromagnetic Resonance Force Microscopy on Microscopic Co Single Layer Films," Appl. Phys. Lett. 73, 2036 (1998) (LAUR-97-5168) "Ferromagnetic Resonance Imaging of Co Films Using Magnetic Resonance Force Microscopy" J. Vac. Sci. Tech. B 16, 2275 (1998) (LAUR-98-227)
Magnetic Resonance Force Microscopy "Real time cantilever signal frequency determination using digital signal processing" Journal of Applied Physics 101, 034315 (2007) URL: dx.doi.org/10.1063/1.2434955 "Theory of spin relaxation in magnetic resonance force microscopy" Appl. Phys. Lett. 82, 1278 (2003) "Probe-Sample Coupling in the Magnetic Resonance Force Microscope" J. Mag. Res. 154, 210 (2002). (LAUR-00-5566) "Magnetic Resonance Force Microscopy With a Ferromagnetic Tip Mounted on the Force Detector" Solid State Nuclear Magnetic Resonance 11, 65 (1998). "Sensitivity and spatial resolution for electron-spin-resonance detection by magnetic resonance force microscopy" Journal of Applied Physics 80, 6931 (1996). "Application of a novel rf coil design to the magnetic resonance force microscope" Reviews of Scientific Instruments 67, 3307 (1996). Magnetism and Charge Inhomogeneity in Correlated Electron Systems "Evidence for spiral magnetic order in the heavy fermion material CeRhIn₅" Phys. Rev. B 62, R6100 (2000). "Inhomogeneous Low Frequency Spin Dynamics in La_1.65Eu_0.2Sr_0.15CuO_0.4" Phys. Rev. Lett. 85, 642 (2000) (LAUR 99-5452) "Local Magnetic and Structural Properties of the LTO -> LTT Transition: A ¹³⁹La NQR Study in Lightly Hole-Doped La_1.8-xEu_0.2Sr_xCuO_0.4" Phys. Rev. B 59, R3952 (1999) (LAUR 98-4013) "Spin dynamics in the low-temperature tetragonal phase of ~1/8 doped single crystal La_1.67Eu_0.2Sr_0.13CuO₄" Phys. Rev. B 61, R9265 (2000) (LAUR 98-4014) "Magnetism of stripe-ordered La_5/3Sr_1/3NiO₄" Phys. Rev. Lett., 82, 3536 (1999) (LAUR 98-730) "Magnetic Field Independence of the Spin Gap in YBa₂Cu₃O_{7 – delta}" Phys. Rev. Lett., 82, 177 (1999) (LAUR-98-4640) "Suppression of Antiferromagnetic Order by Light Hole Doping in La₂Cu_{1 – x}Li_xO₄: A ¹³⁹La NQR Study" Phys. Rev. Lett., 81, 2791 (1998) (LAUR 97-3040) "Magnetic Excitations of the Doped-Hole State in Diamagnetic La₂Cu_0.5Li_0.5O₄" Phys. Rev. Lett., 77, 2069 (1996) (LAUR-96-890) "NMR study of local structure in metallic La₂CuO₄₊_delta" Phys. Rev. Lett., 71, 440 (1993) (LAUR 93-1254) NMR study of U(Be, B)₁₃ in the normal and superconducting states Phys. Rev. B 59, 1432 (1999) (LAUR-98-1603) "Temperature dependence of the anisotropy of the planar oxygen nuclear spin-lattice relaxation rate in YBa₂Cu₃O_y" Phys. Rev. B 57, 11769 (1998) (LAUR-95-4104) "Localized holes in superconducting lanthanum cuprate" Phys. Rev. B 57, R712 (1998) (LAUR-96-3366) "Oxygen ordering and phase separation in La₂CuO_4+delta" Phys. Rev. B 52, 15575 (1995) (LAUR-95-3186) "NMR Study of Local Susceptibility in Metallic La₂CuO_4+delta" Phys. Rev. Lett. 71, 440 (1993) "Cu and O NMR Studies of the Magnetic Properties of YBa₂Cu₃O_6.63 (T_c=62 K" Phys. Rev. B 43, 247 (1991). "¹⁷O NMR Study of Local Spin Susceptibility in Aligned YBa₂Cu₃O₇ Powder" Phys. Rev. Lett. 63, 1865 (1989). "Spin Dynamics at Oxygen Sites in YBa₂Cu₃O₇" Phys. Rev. Lett. 63, 1992 (1989).
Ultralow Temperature NMR "Magnetic Coupling Between ³He and ¹⁹F at Low Temperatures" Phys. Rev. Lett. 51, 2124 (1983). "Relaxation of Nuclear Magnetization of Liquid ³He in Confined Geometries" Phys. Rev. Lett. 52, 1441 (1984).

Contact: P. Chris Hammel + 614 247-6928 Department of Physics 191 West Woodruff Avenue The Ohio State University Columbus, Ohio 43210 USA

LINKS:
Hammel Group MRFM The Ohio State University Home Department of Physics, Ohio State University