Selected Publications

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2019

"Broadband electron paramagnetic resonance spectroscopy in diverse field conditions using optically detected nitrogen-vacancy centers in diamond," Journal of Physics D: Applied Physics, 52, 305004 (2019). 

2018

“FMR-driven spin pumping in Y3Fe5O12-based structures,” Journal of Applied Physics D- Applied Physics, 51, 253001 (2018).

“Voltage-driven, local, and efficient excitation of nitrogen-vacancy centers in diamond,” Science Advances, 9(4), eaat6574 (2018).

"Thickness and angular dependent ferromagnetic resonance of ultra-low damping Co25Fe75 epitaxial films," Applied Physics Letters, 113, 262403 (2018).

“Controlling and Patterning the Effective Magnetization in Y3Fe5O12 Thin Films Using Ion Irradiation,” AIP Advances, 8, 056007 (2018).

2017

"Comparative determination of Y3Fe5O12/Pt interfacial spin mixing conductance by spin-Hall magnetoresistance and spin pumping." Applied Physics Letters, 110, 6 (2017).

"Engineering the Spectrum of Dipole Field-Localized Spin-Wave Modes to Enable Spin-Torque Antidamping." Phys. Rev. Applied, 7, 054019 (2017).

"Increased low-temperature damping in yttrium iron garnet thin lms." Physical Review B, 95, 174411 (2017).

“Metallic ferromagnetic films with magnetic damping under 1.4 x 10-3,” Nature Communications, 8 234 (2017).

2016

"Thickness dependence of spin Hall angle of Au grown on Y3Fe5O12 epitaxial films." Physical Review B, 94, 054418 (2016).

"Spatially resolved detection of complex ferromagnetic dynamics using optically detected nitrogen-vacancy spins." Applied Physics Letters, 108, 232409 (2016).

"Nanofiber-based paramagnetic probes for rapid, real-time biomedical oximetry." Biomedical Microdevices, 18, 38 (2016).

"Exceptionally high magnetization of stoichiometric Y3Fe5O12 epitaxial films grown on Gd3Ga5O12." Applied Physics Letters, 109, 072401  (2016).

"Magnetic resonance force detection using a membrane resonator." Journal of Magnetic Resonance, 271, 15–20 (2016).

"Electron Paramagnetic Resonance of a Single NV Nanodiamond Attached to an Individual Biomolecule." Biophysical Journal, 110, 2044–2052 (2016)

2015

"Ferromagnetic resonance spin pumping and electrical spin injection in silicon-based metal-oxide-semiconductor heterostructures." Physical Review Letters, 115, 246602 (2015)

"Imaging interfaces defined by abruptly varying internal magnetic fields by means of scanned nanoscale spin wave modes." Physical Review B, 92, 214413 (2015)

"Correlating spin transport and electrode magnetization in a graphene spin valve: Simultaneous magnetic microscopy and non-local measurements." Applied Physics Letters, 107, 142406 (2015)

"Spin pumping from spinwaves in thin film YIG." Applied Physics Letters, 107, 042405 (2015)

“Spin transport in antiferromagnetic insulators mediated by magnetic correlations," Physical Review B, 91, 220410 (2015)

"Y3Fe5O12 spin pumping for quantitative understanding of pure spin transport and spin Hall effect in a broad range of materials (invited)." Journal of Applied Physics, 117, 172603 (2015)

“Microscopic studies of nonlocal spin dynamics and spin transport (invited).” Journal of Applied Physics, 117, 172604 (2015)

"The magnetic particle in a box: Analytic and micromagnetic analysis of probe-localized spin wave modes." Journal of Applied Physics, 117, 17E108 (2015)

"Nitrogen–vacancy centres: Nanoscale MRI" Nature Nanotechnology 10, 104–106 (2015)

2014

"Experimental and numerical understanding of localized spin wave mode behavior in broadly tunable spatially complex magnetic configurations." Physical Review B, 90, 214428 (2014)

"A versatile LabVIEW and field-programmable gate array-based scanning probe microscrope for in operando electronic device characterization" Review of Scientific Instruments, 85, 123702 (2014)

"Systematic variation of spin-orbit coupling with d-orbital filling: Large inverse spin Hall effect in 3d transition metals" Physical Review B, 90, 140407R (2014)

"Damping of Confined Modes in a Ferromagnetic Thin Insulating Film: Angular Momentum Transfer across a Nanoscale Field-Defined Interface" Physical Review Letters, 113, 176601 (2014)

"Dual-frequency ferromagnetic resonance to measure spin current coupling in multilayers" Proc. SPIE 9167 Spintronics VII, 91672J (2014)

"Antiferromagnonic Spin Transport from Y3Fe5O12 into NiO" Physical Review Letters, 113, 097202 (2014)

"Ultra-narrow ferromagnetic resonance in organic-based thin films grown via low temperature chemical vapor deposition" Applied Physics Letters, 105, 012407 (2014)

"Spin current and inverse spin Hall effect in ferromagnetic metals probed by Y3Fe5O12-based spin pumping" Applied Physics Letters, 104, 202405 (2014)

"Enhancement of Pure Spin Currents in Spin Pumping Y3Fe5O12 Trilayers through Spin Conductance Matching" Physical Review Applied 1, 044004 (2014)

"Scaling of a spin Hall angle in 3d, 4d and 5d metals from Y3Fe5O12/metal spin pumping" Physical Review Letters, 112, 197201 (2014)

"Off-resonant manipulation of spins in diamond via precessing magnetization of a proximal ferromagnet" Physical Review B 89, 180406 (2014)
Article was selected for an Editor's Suggestion:   Spins Move between Insulators

"Strain-tunable magnetocrystalline anisotropy in epitaxial Y3Fe5O12 thin films" Physical Review B 89, 134404 (2014)

"The effect of spin transport on spin lifetime in nanoscale systems” Nature Nanotechnology, 9, 343-347 (2014)

"Magnetization dynamics of cobalt grown on graphene" Journal of Applied Physics 115, 17C510 (2014)

2013

"Probing the Spin Pumping Mechanism: Exchange Coupling with Exponential Decay in Y3Fe5O12/Barrier/Pt Heterostructures" Physical Review Letters 111 247202 (2013)

"Histone H3 and H4 N-Terminal Tails in Nucleosome Arrays at Cellular Concentrations Probed by Magic Angle Spinning NMR Spectroscopy" J. Am. Chem. Soc. 135, 15278--15281 (2013)

"Experimental demonstration of scanned spin-precession microscopy" Physical Review Letters 111, 117201 (2013)

"Control of Magnetocrystalline Anisotropy by Epitaxial Strain in Double Perovskite Sr2FeMoO6 Films" Physical Review Letters 110, 147204 (2013)

"Correlation of electrical spin injection and non-linear charge-transport in Fe/MgO/Si" Applied Physics Letters 103, 012402 (2013) 

"Large Spin Pumping from Epitaxial Y3Fe5O12 Thin Films to Pt and W Layers" Physical Review B Rapid Communications 88, 100406 (2013)

"Structural transitions in a doped lanthanum cuprate" Physial Review B 87, 174505 (2013)

"Anistropy and Field-Sensing Bandwidth in Self-Biased Bismuth-Substituted Rare-Earth Iron Garnet Films: Measurement by Ferromagnetic Resonance Spectroscopy" IEEE Transactions on Magnetics 49, 6 (2013)

"Dynamics of Histone Tails within Chromatin" Biophysical Journal, 104 343A, Supplement: 1 (2013)

2012

"Imaging spin properties using spatially varying magnetic fields" Journal of Applied Physics 111, 013902 (2012)

"Local magnetic characterization of (Ga,Mn) as continuous thin film using scanning probe force microscopy" Physical Review B 85 184402 (2012)

2011

"Magnetic force microscopy in the presence of a strong probe field" Applied Physics Letters 99, 162514 (2011)

"Nanoscale confined mode ferromagnetic resonance imaging of an individual Ni81Fe19 disk using magnetic resonance force microscopy" Journal of Applied Physics 109, 07D313 (2011)

"Quantitatitve magnetic force microscopy on permalloy dots using an iron filled carbon nanotube probe" Ultramicroscopy 111, 1360-1365 (2011)

"Spin Lifetime in Small Electron Spin Ensembles Measured by Magnetic Resonance Force Microscopy" Physical Review B, Rapid Communications 84, 220405(R) (2011)

2010

"A strong ferroelectric ferromagnet created by means of spinlattice coupling" Nature 466, 954-958 (19 August 2010)

"Magnetization reversal in an individual 25 nm iron-filled carbon nanotube" Applied Physics Letters 96, 252505 (2010)

"Nanoscale scanning probe ferromagnetic resonance imaging using localized modes" Nature 466, 845-848 (2010)

2009

"Effect of localized magnetic field on the uniform ferromagnetic resonance mode in a thin film" Applied Physics Letters 94 172508 (2009)

 "Detection of localized ferromagnetic resonance in a continuous thin film via magnetic resonance force microscopy" Physical Review B 79, 132401 (2009)

"Localized ferromagnetic resonance force microscopy in Permalloy-cobalt films" Journal of Applied Physics 106 046103 (2009)

"Molecular packing and magnetic properties of lithium naphthalocyanine crystal: Hollow channels enabling permeability and paramagnetic sensitivity to molecular oxygen" Journal of Materials Chemistry 19, 41384147 (2009)

"Nanoscale MRI" Nature 458, 844 (2009)

2008

"Local Ferromagnetic Resonance Imaging with Magnetic Resonance Force Microscopy" Physical Review Letters 100, 197601 (2008)

"Magnetic Force Microscopy of Superparamagnetic Nanoparticles" Small 4, 270-278 (2008)

"Manipulating spins by cantilever synchronized frequency modulation: A variable resolution magnetic resonance force microscope" Applied Physics Letters 93, 012506 (2008)

"Probing arrays of circular magnetic microdots by ferromagnetic resonance" Journal of Nanoscience and Technology 8, 2811-2826 (2008)

2007

"Detection of higher order modulation harmonics in magnetic resonance force microscopy" Journal of Applied Physics 102, 033911 (2007)

"Real time cantilever signal frequency determination using digital signal processing" Journal of Applied Physics 101, 034315 (2007)

2006

"Ferromagnetic resonance force microscopy studies of arrays of micron size permalloy dots" Physical Review B 74,144424 (2006)

"Origin of fourfold anisotropy in square lattices of circular ferromagnetic dots" Physical Review B 74, 60406-1-4 (2006)

"Perturbation of magnetostatic modes observed by ferromagnetic resonance force microscopy" Physical Review B 73, 212410 (2006) 

2005

"Light-free magnetic resonance force microscopy for studies of electron spin polarized systems" Journal of Magnetism and Magnetic Materials 286, 324 (2005) 

2004

"Seeing Single Spins" Nature 430, 300 (2004)

2003

"Application of magnetic resonance force microscopy cyclic adiabatic inversion for a single-spin measurement" Journal of Physics A 36, 4417 (2003)

"Magnetic Resonance Force Microscopy and the Solid State Quantum Computer" Proceedings of the SPIE 4656, p. 1-9 (2003)

"The magnetic-resonance force microscope: a new tool for high-resolution, 3-D, subsurface scanned probe imaging" Proceedings of the IEEE 91, (2003)

"Theory of spin relaxation in magnetic resonance force microscopy" Applied Physics Letters 82, 1278 (2003)

2002

"Probe-Sample Coupling in the Magnetic Resonance Force Microscope"  Journal of Magnetic Resonance 154, 210 (2002)- (LAUR-00-5566)

"Static Stern-Gerlach effect in magnetic force microscopy" Physical Review A 65, 032311 (2002)

2001

"Magnetic Resonance Force Microscopy Quantum Computer with Tellurium Donors in Silicon" Physical Review Letters 86, 2894 (2001)

2000

"Evidence for spiral magnetic order in the heavy fermion material CeRhIn5" Physical Review B 62 R6100 (2000)

"Imaging mechanisms of force detected FMR microscopy" Journal of Applied Physics 87, 6493 (2000)- (LAUR 00-2495)

"Inhomogeneous Low Frequency Spin Dynamics in La1.65Eu0.2Sr0.15CuO4" Physical Review Letters 85, 642 (2000)- (LAUR 99-5452)

"Solid-state nuclear-spin quantum computer based on magnetic resonance force microscopy" Physical Review B 61, 14694 (2000)

"Spin dynamics in the low-temperature tetragonal phase of ~1/8 doped single crystal La1.67Eu0.2Sr0.13CuO4" Physical Review B 61, R9265 (2002)- (LAUR 98-4014)

1999

"Local Magnetic and Structural Properties of the LTO -> LTT Transition: A 139La NQR Study in Lightly Hole-Doped La1.8-xEu0.2SrxCuO0.4" Physical Review B 59, R3952 (1999)- (LAUR 98-4013)

"Magnetic Field Independence of the Spin Gap in YBa2Cu3O7 – delta"- Physical Review Letters. 82 177 (1999)- (LAUR-98-4640) 

"Magnetism of stripe-ordered La5/3Sr1/3NiO4" Physical Review Letters 82, 3536 (1999)- (LAUR 98-730)

"NMR study of U(Be, B)13 in the normal and superconducting states" Physical Review Letters 59, 1432 (1999)- (LAUR-98-1603)

1998

"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)

"Localized holes in superconducting lanthanum cuprate" Phys. Rev. B 57, R712 (1998)- (LAUR-96-3366)

"Magnetic Resonance Force Microscopy With a Ferromagnetic Tip Mounted on the Force Detector" Solid State Nuclear Magnetic Resonance 11, 65 (1998)

"Suppression of Antiferromagnetic Order by Light Hole Doping in La2Cu1 - xLixO4: A 139La NQR Study" Phys. Rev. Lett. 81, 2791 (1998)- (LAUR 97-3040)

"Temperature dependence of the anisotropy of the planar oxygen nuclear spin-lattice relaxation rate in YBa2Cu3Oy" Phys. Rev. B 57, 11769 (1998)- (LAUR-95-4104)

1996

"Application of a novel rf coil design to the magnetic resonance force microscope" Reviews of Scientific Instruments 67, 3307 (1996) 

"Magnetic Excitations of the Doped-Hole State in Diamagnetic La2Cu0.5Li0.5O4" Phys. Rev. Lett. 77, 2069 (1996)- (LAUR-96-890)

"Observation of Ferromagnetic Resonance in a Microscopic Sample Using Magnetic Resonance Force Microscopy" Appl. Phys. Lett. 68, 2005 (1996)- (LAUR-95-3828)

"Sensitivity and spatial resolution for electron-spin-resonance detection by magnetic resonance force microscopy" Journal of Applied Physics 80, 6931 (1996)

1995

"Oxygen ordering and phase separation in La2CuO4+delta"-Phys. Rev. B 52, 15575 (1995)- (LAUR-95-3186)

1993

"NMR study of local structure in metallic La2CuO4+ delta" Phys. Rev. Lett. 71, 440 (1993)- (LAUR 93-1254)

1991

"Cu and O NMR Studies of the Magnetic Properties of YBa2Cu3O6.63 (Tc=62 K" Phys. Rev. B 43, 247 (1991)  

1989

"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)

1984

"Relaxation of Nuclear Magnetization of Liquid 3He in Confined Geometries" Phys. Rev. Lett. 52, 1441 (1984)

1983

"Magnetic Coupling Between 3He and 19F at Low Temperatures" Phys. Rev. Lett. 51, 2124 (1983)