Effects of Rashba and Dresselhaus spin-orbit interactions on the ground state of two-dimensional localized spins

J. H. Oh; K. J. Lee; Hyun Woo Lee; M. Shin

doi:10.1088/0953-8984/26/19/196005

Effects of Rashba and Dresselhaus spin-orbit interactions on the ground state of two-dimensional localized spins

J. H. Oh, K. J. Lee, Hyun Woo Lee, M. Shin

Department of Materials Science and Engineering

Research output: Contribution to journal › Article

4 Citations (Scopus)

Abstract

Starting with the indirect exchange model influenced by the Rashba and the Dresselhaus spin-orbit interactions, we derive the Dzyaloshinskii-Moriya interaction of localized spins. The strength of the Dzyaloshinskii-Moriya interaction is compared with that of the Heisenberg exchange term as a function of atomic distance. Using the calculated interaction strengths, we discuss the formation of various atomic ground states as a function of temperature and external magnetic field. By plotting the magnetic field-temperature phase diagram, we present approximate phase boundaries between the spiral, Skyrmion and ferromagnetic states of the two-dimensional weak ferromagnetic system.

Original language	English
Article number	196005
Journal	Journal of Physics Condensed Matter
Volume	26
Issue number	19
DOIs	https://doi.org/10.1088/0953-8984/26/19/196005
Publication status	Published - 2014 May 14

Keywords

indirect interaction model
skyrmion
spin texture
spin-orbit interaction

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics

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AU - Oh, J. H.

AU - Lee, K. J.

AU - Lee, Hyun Woo

AU - Shin, M.

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N2 - Starting with the indirect exchange model influenced by the Rashba and the Dresselhaus spin-orbit interactions, we derive the Dzyaloshinskii-Moriya interaction of localized spins. The strength of the Dzyaloshinskii-Moriya interaction is compared with that of the Heisenberg exchange term as a function of atomic distance. Using the calculated interaction strengths, we discuss the formation of various atomic ground states as a function of temperature and external magnetic field. By plotting the magnetic field-temperature phase diagram, we present approximate phase boundaries between the spiral, Skyrmion and ferromagnetic states of the two-dimensional weak ferromagnetic system.

AB - Starting with the indirect exchange model influenced by the Rashba and the Dresselhaus spin-orbit interactions, we derive the Dzyaloshinskii-Moriya interaction of localized spins. The strength of the Dzyaloshinskii-Moriya interaction is compared with that of the Heisenberg exchange term as a function of atomic distance. Using the calculated interaction strengths, we discuss the formation of various atomic ground states as a function of temperature and external magnetic field. By plotting the magnetic field-temperature phase diagram, we present approximate phase boundaries between the spiral, Skyrmion and ferromagnetic states of the two-dimensional weak ferromagnetic system.

KW - indirect interaction model

KW - skyrmion

KW - spin texture

KW - spin-orbit interaction

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