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

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 functio...

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Bibliographic Details
Published in:Journal of physics. Condensed matter 2014-05, Vol.26 (19), p.196005-196005
Main Authors: Oh, J H, Lee, K-J, Lee, Hyun-Woo, Shin, M
Format: Article
Language:English
Subjects:
Condensed matter
Exchange
Ferromagnetism
Ground state
indirect interaction model
Magnetic Fields
Magnetic Phenomena
Mathematical models
Models, Theoretical
Phase boundaries
skyrmion
spin texture
spin-orbit interaction
Spin-orbit interactions
Temperature
Two dimensional
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Summary: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.
ISSN:0953-8984
1361-648X
DOI:10.1088/0953-8984/26/19/196005