TY - JOUR
T1 - First-principles evaluation of the dzyaloshinskii–moriya interaction
AU - Koretsune, Takashi
AU - Kikuchi, Toru
AU - Arita, Ryotaro
N1 - Funding Information:
Ryotaro Arita was born in Tokyo, Japan in 1972. He obtained his B.Sc. (1995), M.Sc. (1997), and D.Sc. (2000) degrees from the University of Tokyo. He was a research associate at the University of Tokyo (2000–2004). After working for two years (2004–2006) as a postdoctoral researcher at the Max Planck Institute for Solid State Research (awarded with an Alexander von Humboldt fellowship), he moved to RIKEN, where he was a research scientist (2006–2008). In 2008, he moved to the University of Tokyo as an associate professor, and since 2014, he is a team leader at RIKEN center for emergent matter science. His current interest is in first principles studies of strongly correlated electron systems.
Funding Information:
Acknowledgments The authors thank H. Fukuyama, N. Kanazawa, H. Kawaguchi, W. Koshibae, H. Kohno, T. Momoi, D. Morikawa, N. Nagaosa, M. Ogata, S. Seki, K. Shibata, Y. Suzuki, G. Tatara, and Y. Tokura for valuable discussions. In particular, the authors thank G. Tatara for the collaboration in Ref. 25 and T.Ko and R.A. thank N. Nagaosa for the collaboration in Ref. 26. This work was supported by JSPS KAKENHI Grant Numbers JP16H00924, JP25400344, and JP26103006 and JST PRESTO Grant Number JPMJPR15N5. T.Ki is a Yukawa Research Fellow supported by the Yukawa Memorial Foundation.
Funding Information:
Toru Kikuchi was born in Tokyo, Japan in 1983. He obtained his B.Sc. (2007), M.Sc. (2009), D.Sc. (2012) degrees from Kyoto University. He was a postdoctoral research fellow at High Energy Accel-erator Research Organization (KEK), National Institute for Materials Science (NIMS) and RIKEN. Since 2017, he has been a postdoctoral research fellow at Yukawa Institute for Theoretical Physics (YITP), Kyoto University. He worked on field theory of soliton dynamics and string theory. His current research interest is condensed matter theory.
Publisher Copyright:
© 2018 The Physical Society of Japan.
PY - 2018
Y1 - 2018
N2 - We review recent developments of formulations to calculate the Dzyaloshinskii–Moriya (DM) interaction from first principles. In particular, we focus on three approaches. The first one evaluates the energy change due to the spin twisting by directly calculating the helical spin structure. The second one employs the spin gauge field technique to perform the derivative expansion with respect to the magnetic moment. This gives a clear picture that the DM interaction can be represented as the spin current in the equilibrium within the first order of the spin–orbit couplings. The third one is the perturbation expansion with respect to the exchange couplings and can be understood as the extension of the Ruderman–Kittel–Kasuya–Yosida (RKKY) interaction to the noncentrosymmetric spin–orbit systems. By calculating the DM interaction for the typical chiral ferromagnets Mn1−xFexGe and Fe1−xCoxGe, we discuss how these approaches work in actual systems.
AB - We review recent developments of formulations to calculate the Dzyaloshinskii–Moriya (DM) interaction from first principles. In particular, we focus on three approaches. The first one evaluates the energy change due to the spin twisting by directly calculating the helical spin structure. The second one employs the spin gauge field technique to perform the derivative expansion with respect to the magnetic moment. This gives a clear picture that the DM interaction can be represented as the spin current in the equilibrium within the first order of the spin–orbit couplings. The third one is the perturbation expansion with respect to the exchange couplings and can be understood as the extension of the Ruderman–Kittel–Kasuya–Yosida (RKKY) interaction to the noncentrosymmetric spin–orbit systems. By calculating the DM interaction for the typical chiral ferromagnets Mn1−xFexGe and Fe1−xCoxGe, we discuss how these approaches work in actual systems.
UR - http://www.scopus.com/inward/record.url?scp=85043707039&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85043707039&partnerID=8YFLogxK
U2 - 10.7566/JPSJ.87.041011
DO - 10.7566/JPSJ.87.041011
M3 - Article
AN - SCOPUS:85043707039
VL - 87
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 4
M1 - 041011
ER -