University of Minnesota
University of Minnesota
http://www.umn.edu/
612-625-5000

Physics and Astronomy
Home
News
Overview
Research
Publications
People
Internal Wiki

Publications

2017

Theory of Kondo suppression of spin polarization in nonlocal spin valves

K.-W. Kim, L. O'Brien, P. A. Crowell, C. Leighton, and M. D. Stiles, Phys. Rev. B 95, 104404 (2017)[link]

2016

Contact-Induced Spin Relaxation in Graphene Nonlocal Spin Valves

G. Stecklein, P. A. Crowell, J. Li, Y. Anugrah, Q. Su, and S. J. Koester, Phys. Rev. Applied 6, 054015 (2016)[link]

Spin injection and detection up to room temperature in Heusler alloy/n-GaAs spin valves

T. A. Peterson, S. J. Patel, C. C. Geppert, K. D. Christie, A. Rath, D. Pennachio, M. E. Flatté, P. M. Voyles, C. J. Palmstrøm, and P. A. Crowell, Phys. Rev. B 94, 235309 (2016)[link]

Observation and modelling of ferromagnetic contact-induced spin relaxation in Hanle spin precession measurements

L. O’Brien, D. Spivak, N. Krueger, T. A. Peterson, M. J. Erickson, B. Bolon, C. C. Geppert, C. Leighton, and P. A. Crowell, Phys. Rev. B 94, 094431 (2016)[link]

Band structure characterization of WS2 grown by chemical vapor deposition

I. Tanabe, M. Gomez, W.C. Coley, D. Le, E.M. Echeverria, G. Stecklein, V. Kandyba, S.K. Balijepalli, V. Klee, A.E. Nguyen, E. Preciado, I-Hsi Lu, S. Bobek, D. Barroso, D. Martinez-Ta, A. Barinov, T.S. Rahman, P.A. Dowben, P.A. Crowell and L.Bartels, Appl. Phys. Lett. 108, 252103 (2016)[link]

Non-Local Lateral Spin-Valve Devices Fabricated With a Versatile Top-Down Fabrication Process

A. K. Smith, M. Jamali, G. Stecklein, P. A. Crowell, and J. P. Wang, IEEE Magnetics Letters 7, 3103604 (2016)[link]

Dynamic detection of electron spin accumulation in ferromagnet-semiconductor devices by ferromagnetic resonance

C. Liu, S. J. Patel, T. A. Peterson, C. C. Geppert, K. D. Christie, C. J. Palmstrøm, and P. A. Crowell, Nature Communications 7, 10296 (2016)[link]

Interdiffusion-controlled Kondo suppression of injection efficiency in metallic non-local spin valves

L. O’Brien, D. Spivak, J. S. Jeong, K. A. Mkhoyan, P. A. Crowell, and C. Leighton, Phys. Rev. B 93, 014413 (2016)[link]

2015

Knight shift and nuclear spin relaxation in Fe/n-GaAs heterostructures

K. D. Christie, C. C. Geppert, S. J. Patel, Q. O. Hu, C. J. Palmstrøm, and P. A. Crowell, Phys. Rev. B 92, 155204 (2015)[link]

Anisotropic spin relaxation in n-GaAs from strong inhomogeneous hyperfine fields produced by the dynamical polarization of nuclei

N. J. Harmon, T. A. Peterson, C. C. Geppert, S. J. Patel, C. J. Palmstrøm, P. A. Crowell, and M. E. Flatté, Phys. Rev. B 92, 140201(R) (2015)[link]

Determination of the Schottky barrier height of ferromagnetic contacts to few-layer phosphorene

Y. Anugrah, M. C. Robbins, P. A. Crowell, and S.J. Koester, Applied Physics Letters 106, 103108 (2015)[link]

2014

Electrical detection of ferromagnetic resonance in ferromagnet/n-GaAs heterostructures by tunneling anisotropic magnetoresistance

C. Liu, Y. Boyko, C.C. Geppert, K.D. Christie, G. Stecklein, S.J. Patel, C.J. Palmstrøm, and P.A. Crowell, Applied Physics Letters 105, 212401 (2014)[link]

Resonance in magnetostatically coupled transverse domain walls

A. T. Galkiewicz, L. O’Brien, P. S. Keatley, R. P. Cowburn, and P. A. Crowell, Physical Review B 90 024420 (2014)[link]

Kondo physics in non-local metallic spin transport devices

L. O’Brien, M. J. Erickson, D. Spivak, H. Ambaye, R. J. Goyette, V. Lauter, P. A. Crowell, and C. Leighton, Nature Communications, 5, (2014).[link]

2012

Phase Diagram of Magnetic Vortex Dynamics

T.Y. Chen, A.T. Galkiewicz, and P.A. Crowell, Physical Review B 180406(R) (2012)[link]

High power and low critical current spin torque oscillation from a magnetic tunnel junction with a built-in hard axis polarizer

Y. Zhang, H. Zhao, A. Lyle, P.A. Crowell, and J.P. Wang, Applied Physics Letters 100, 032405 (2012) [link]

Surface Roughness Dominated Pinning Mechanism of Magnetic Vortices in Soft Ferromagnetic Films

T. Y. Chen, M. J. Erickson, P. A. Crowell, and C. Leighton, Phys. Rev. Lett. 109, 097202 (2012) [link]

2011

Spin accumulation near Fe/GaAs(001) interfaces: The role of semiconductor band structure

Q. O. Hu, E. S. Garlid, P. A. Crowell, and C. J. Palmstrom, Physical Review B, 84 085306 (2011)[link]

Spin Transport in Ferromagnet/III-V Semiconductor Heterostructures, Handbook of Spin Transport and Magnetism

P. A. Crowell and S. A. Crooker, edited by E.Y. Tsymbal and I. Zutic (2011)[link]

Spin torque oscillation modes of a dual magnetic tunneling junction

Y. S. Zhang, H. Zhao, A. Lyle, P. A. Crowell, and J. P. Wang, Journal of Applied Physics 109, 07D307 (2011)[link]

2010

Electrical Measurement of the Direct Spin Hall Effect in Fe/In(x)Ga(1-x)As Heterostructures

E. S. Garlid, Q. O. Hu, M. K. Chan, C. J. Palmstrøm, and P. A. Crowell, Physical Review Letters 105, 156602 (2010)[link]

Non-linear dynamics of a magnetic vortex

T.Y. Chen and P.A. Crowell, IEEE Transactions on Magnetics 46, 1457 (2010)[link]

Magnetic vortex dynamics in the presence of pinning

R.L. Compton, T.Y. Chen, and P.A. Crowell, Physical Review B 81 144412 (2010)[link]

2009

Spin injection across the Fe/GaAs interface: Role of interfacial ordering

B. D. Schultz, N. Marom, D. Naveh, X. Lou, C. Adelmann, J. Strand, P. A. Crowell, L. Kronik, and C. J. Palmstrøm, Phys. Rev. B 80, 201309 (2009)[link]

Hyperfine interactions and spin transport in ferromagnet-semiconductor heterostructures

M. K. Chan, Q. O. Hu, J. Zhang, T. Kondo, C. J. Palmstrøm, and P. A. Crowell, Phys. Rev. B 80, 161206(R)(2009)[link]

Bias-controlled sensitivity of ferromagnet/semiconductor electrical spin detectors

S. A. Crooker, E. S. Garlid, A. N. Chantis, D. L. Smith, K. S. M. Reddy, Q. O. Hu, T. Kondo, C. J. Palmstrøm, and P. A. Crowell, Physical Review B 80 041305(R) (2009)[link]

2008 - 2005

Electrical Detection of Spin Transport in Lateral Ferromagnet-Semiconductor Devices

X. Lou, C. Adelmann, S. A. Crooker, E. S. Garlid, J. Zhang, S. M. Reddy, S. D. Flexner, C. J. Palmstrøm, and P. A. Crowell, Nature Physics 3, 197 (2007)[link]

Exchange Bias as a Probe of the Incommensurate Spin-Density Wave in Fe/Cr (001)

J. S. Parker, L. Wang, K. A. Steiner, P. A. Crowell, and C.Leighton, Phys Rev. Lett.97 137202 (2006)[link]

Dynamics of a Pinned Magnetic Vortex

R. L. Compton and P. A. Crowell, Phys Rev. Lett.97 137202 (2006)[link]

Spin injection from perpendicular magnetized ferromagnetic δ-MnGa into (Al,Ga)As heterostructures

C. Adelmann, J. L. Hilton, B. D. Schultz, S. McKernan, C. J.Palmstrøm, X. Lou, H.-S. Chiang, and P. A. Crowell, Appl. Phys. Lett. 89, 112511 (2006).[link]

Electrical Detection of Spin Accumulation at a Ferromagnet-Semiconductor Interface

X. Lou, C. Adelmann, M. Furis, S. A. Crooker, C. J. Palmstrøm, and P. A. Crowell, Phys. Rev. Lett. 96, 176603 (2006).[link]

Electron Spin Dynamics and Hyperfine Interactions in Fe/Al(0.1)Ga(0.9)As/GaAs Spin Injection Heterostructures

J. Strand, X. Lou, C. Adelmann, B. D. Schultz, A. F. Isakovic, C. J. Palmstrom, P. A. Crowell, Phys. Rev. B 72, 155308 (2005).[link]

Interactions of Spin Waves with a Magnetic Vortex

J. P. Park, P. A. Crowell, Phys. Rev. Lett. 95, 167201 (2005).[link]

Imaging Spin Transport in Lateral Ferromagnet/Semiconductor Structures

S. A. Crooker, M. Furis, X. Lou, C. Adelmann, D. L. Smith, C. J. Palmstrøm, P. A. Crowell, Science, 309, 2191 (2005).[link]

Effects of Doping Profile and Post-growth Annealing on Spin Injection from Fe into AlGaAs Heterostructures

C. Adelmann, J. Q. Xie, C. J. Palmstrøm, J. Strand, X. Lou, J. Wang, P. A. Crowell, J. Vac. Sci. Tec. B 23, 1747 (2005).[link]

Excitations in Vortex-state Permalloy Dots

C. E. Za J. P. Park, P. A. Crowell, Phys. Rev. B 72, 024427 (2005).[link]

Direct Measurement of Spatially Localized FMR Modes in an Antidot Lattice

M. J. Pechan, C. Yu, R. L. Compton, J. P. Park, and P. A. Crowell, J. Appl. Phys. 97, 10J903 (2004).[link]

Time Domain Dynamics of the Asymmetric Magnetization Reversal in Exchange Biased Bilayers

D. M. Engebretson, W. A. A. Macedo, I. K. Schuller, P. A. Crowell, C. Leighton, Phys. Rev. B 71 184412 (2005).[link]

Spin Injection and Relaxation in Ferromagnet-Semiconductor Heterostructures

C. Adelmann, X. Lou, J. Strand, C. J. Palmstrøm, and P. A. Crowell, Phys. Rev. B 71, 121301(R) (2005)[link]

Spin Injection from the Heusler Alloy Co2MnGe into Al0.1Ga0.9As/GaAs Heterostructures

X. Y. Dong, X. Lou, C. Adelmann, J. Strand, J. Q. Xie, C. J. Palmstrøm, P. A. Crowell, J.-P. Barnes, and A.K. Petford-Long, Appl. Phys. Lett. 86, 102107 (2005)[link]

2004 - 1999

Spin Waves in an Inhomogeneously Magnetized Stripe

C. Bayer, J. P. Park, H. Wang, M. Yan, C. E. Campbell, and P. A. Crowell, Phys. Rev. B 69, 134401 (2004).[link]

Nuclear Magetic Resonance in a Ferromagnet-Semiconductor Heterostructure

J. Strand, B. D. Schultz, A. F. Isakovic, X. Lou, C. J. Palmstrøm, and P. A. Crowell, Appl. Phys. Lett. 83, 3335 (2003).[link]

Dynamic Nuclear Polarization by Electrical Spin Injection in Ferromagnet-Semiconductor Heterostructures

J. Strand, B. D. Schultz, A. F. Isakovic, C. J. Palmstrøm, and P. A. Crowell, Phys. Rev. Lett. 91, 036602 (2003).[link]

Tunable Magnetization Reversal in Epitaxial bcc Fe1-xCox Films on Vicinal Surfaces

J. A. Wolf, K. K. Anderson, E. D. Dahlberg, P. A. Crowell, L. C. Chen, and C. J. Palmstrøm, J. Appl. Phys. 93, 8256 (2003).[link]

Simulations of Magnetic Dynamics in Iron-Cobalt Films

M. Yan, J. Berezovsky, P. A. Crowell, and C. E. Campbell,Condensed Matter Theories Vol 17, edited by M. P. Das and F. Green (Nova, New York, 2003), p. 295.[link]

Imaging of Spin Dynamics in Closure Domain and Vortex Structures

J.P. Park, P. Eames, D.M. Engebretson, J. Berezovsky, and P.A. Crowell, Phys. Rev. B 67, 020403R (2003).[link]

Spatially Resolved Dynamics of Localized Spin-Wave Modes in Ferromagnetic Wires

J. P. Park, P. Eames, D. M. Engebretson, J. Berezovsky, and P. A. Crowell, Phys. Rev. Lett. 89, 277201 (2002).[link]

Terahertz Emission from Magneto-plasma Oscillations in Semiconductors

J. N. Heyman, H. Wrage, C. Lind, D .Hebert, P. Neocleous, P. A. Crowell, T. Müller, and K. Unterrainer, Ultrafast Phenomena in Semiconductors VI, Kong-Thon F. Sen, Jin-Joo Song, Hongxing Jiang, Editors, Proceedings of SPIE, Vol. 4643, 12-18 (2002).[link]

Optically Pumped Transport in Ferromagnet-Semiconductor Schottky Diodes

A. F. Isakovic, D. M. Carr, J. Strand, B. D Schultz, C. J. Palmstrøm, and P. A. Crowell, J. Appl. Phys. 91, 7261 (2002).[link]

Time-Domain Ferromagnetic Resonance in Epitaxial Thin Films

D. M. Engebretson, J. Berezovsky, J. P. Park, L. C. Chen, C. J. Palmstrøm, and P. A. Crowell, J. Appl. Phys. 91, 8040 (2002)[link]

Optical Pumping in Ferromagnet-Semiconductor Heterostructures: Magneto-optics and Spin Transport

A. F. Isakovic, D. M. Carr, J. Strand, B. D. Schultz, C. J. Palmstrøm, and P.A. Crowell, Phys. Rev. B 64, 161304R (2001).[link]

Terahertz Emission from GaAs and InAs in a Magnetic Field

J. N. Heyman, P. Neocleous, D. Hebert, P. A. Crowell, T. Müller, and K. Unterrainer, Phys. Rev. B 64, 085202 (2001).[link]

Control of Magnetic Anisotropy in Fe1-xCox Films on Vicinal GaAs and Sc1-yEryAs Surfaces

A. F. Isakovic, J. Berezovsky, P. A. Crowell, L. C. Chen, D. M. Carr, B. D. Schultz, and C. J. Palmstrøm, Journal of Applied Physics 89, 6674 (2001).[link]

Epitaxial Ferromagnetic Metal/GaAs (001) Heterostructures

L. C. Chen, J. W. Dong, B. D. Schultz, C. J. Palmstrøm, J. Berezovsky, A. Isakovic, P. A. Crowell, and N. Tabat, J. Vac. Sci. Tech. B 18, 2057 (2000).[link]

Magnetic Circular Dichroism Studies of Carrier-Induced Ferromagnetism in (Ga­1-xMnx)As

B. Beschoten, P. A. Crowell, I. Malajovich, D. D. Awschalom, F. Matsukura, A. Shen, and H. Ohno, Phys. Rev. Lett. 83, 3073 (1999). [link]