Negative tunneling magneto-resistance in quantum wires with strong spin-orbit coupling

Seungju Han; Llorenc Serra; Mahn Soo Choi

doi:10.1088/0953-8984/27/25/255002

Negative tunneling magneto-resistance in quantum wires with strong spin-orbit coupling

Seungju Han, Llorenc Serra, Mahn Soo Choi

Department of Physics

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

We consider a two-dimensional magnetic tunnel junction of the FM/I/QW(FM+SO)/I/N structure, where FM, I and QW(FM+SO) stand for a ferromagnet, an insulator and a quantum wire with both magnetic ordering and Rashba spin-orbit (SOC), respectively. The tunneling magneto-resistance (TMR) exhibits strong anisotropy and switches sign as the polarization direction varies relative to the quantum-wire axis, due to interplay among the one-dimensionality, the magnetic ordering, and the strong SOC of the quantum wire.

Original language	English
Article number	255002
Journal	Journal of Physics Condensed Matter
Volume	27
Issue number	25
DOIs	https://doi.org/10.1088/0953-8984/27/25/255002
Publication status	Published - 2015 Jul 1

Keywords

LAO/STO
quantum wire
tunneling magneto-resistance

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics

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AU - Choi, Mahn Soo

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AB - We consider a two-dimensional magnetic tunnel junction of the FM/I/QW(FM+SO)/I/N structure, where FM, I and QW(FM+SO) stand for a ferromagnet, an insulator and a quantum wire with both magnetic ordering and Rashba spin-orbit (SOC), respectively. The tunneling magneto-resistance (TMR) exhibits strong anisotropy and switches sign as the polarization direction varies relative to the quantum-wire axis, due to interplay among the one-dimensionality, the magnetic ordering, and the strong SOC of the quantum wire.

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