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Title: Theory of spin-coherent electrical transport through a defect spin state in a metal/insulator/ferromagnet tunnel junction undergoing ferromagnetic resonance

Abstract

In this work, we describe the coherent dynamics of electrical transport through a localized spin-dependent state, such as is associated with a defect spin, at the interface of a ferromagnet and a nonmagnetic material during ferromagnetic resonance. As the ferromagnet magnetic moment precesses, charge carriers are dynamically spin filtered by the localized state, leading to a dynamic spin accumulation on the defect. Local effective magnetic fields modify the precession of a spin on the defect, which also modifies the time-integrated total charge current through the defect. Lastly, we thus identify a form of current-detected spin resonance that reveals the local magnetic environment of a carrier spin located at a defect, and thus potentially the defect’s identity.

Authors:
 [1]; ORCiD logo [1]
  1. Univ. of Iowa, Iowa City, IA (United States)
Publication Date:
Research Org.:
Univ. of Iowa, Iowa City, IA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
OSTI Identifier:
1595783
Alternate Identifier(s):
OSTI ID: 1459467
Grant/Contract Number:  
SC0016447
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 98; Journal Issue: 3; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Coulomb blockade; Defects; Magnetotransport; Spin accumulation; Spintronics; Tunnel junctions; Magnetic techniques

Citation Formats

Harmon, N. J., and Flatté, M. E. Theory of spin-coherent electrical transport through a defect spin state in a metal/insulator/ferromagnet tunnel junction undergoing ferromagnetic resonance. United States: N. p., 2018. Web. doi:10.1103/PhysRevB.98.035412.
Harmon, N. J., & Flatté, M. E. Theory of spin-coherent electrical transport through a defect spin state in a metal/insulator/ferromagnet tunnel junction undergoing ferromagnetic resonance. United States. doi:10.1103/PhysRevB.98.035412.
Harmon, N. J., and Flatté, M. E. Mon . "Theory of spin-coherent electrical transport through a defect spin state in a metal/insulator/ferromagnet tunnel junction undergoing ferromagnetic resonance". United States. doi:10.1103/PhysRevB.98.035412. https://www.osti.gov/servlets/purl/1595783.
@article{osti_1595783,
title = {Theory of spin-coherent electrical transport through a defect spin state in a metal/insulator/ferromagnet tunnel junction undergoing ferromagnetic resonance},
author = {Harmon, N. J. and Flatté, M. E.},
abstractNote = {In this work, we describe the coherent dynamics of electrical transport through a localized spin-dependent state, such as is associated with a defect spin, at the interface of a ferromagnet and a nonmagnetic material during ferromagnetic resonance. As the ferromagnet magnetic moment precesses, charge carriers are dynamically spin filtered by the localized state, leading to a dynamic spin accumulation on the defect. Local effective magnetic fields modify the precession of a spin on the defect, which also modifies the time-integrated total charge current through the defect. Lastly, we thus identify a form of current-detected spin resonance that reveals the local magnetic environment of a carrier spin located at a defect, and thus potentially the defect’s identity.},
doi = {10.1103/PhysRevB.98.035412},
journal = {Physical Review B},
number = 3,
volume = 98,
place = {United States},
year = {2018},
month = {7}
}

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