Deformation of the Fermi Surface and Anomalous Mass Renormalization by Critical Spin Fluctuations through Asymmetric Spin-Orbit Interaction
Abstract
It is shown that an asymmetric spin-orbit interaction is appreciably renormalized by the effect of critical spin fluctuations. As an explicit example, the Rashba-type interaction is predicted to be suppressed by anti-ferromagnetic critical fluctuations near the hot line (or point), leading to a deformation of the Fermi surface near the hot line (or point) around which the band splitting is decreased, while ferromagnetic critical fluctuations are shown to enhance the Rashba-type interaction everywhere on the Fermi surface, leading to an increase in the band splitting. It is also found that the many-body mass renormalization, which diverges towards the magnetic quantum critical point, is in the opposite sign for the two split bands by the Rashba-type interaction. These predictions are observable by the de Haas-van Alphen (dHvA) effect in principle.
Keywords
Cite
@article{arxiv.1502.02483,
title = {Deformation of the Fermi Surface and Anomalous Mass Renormalization by Critical Spin Fluctuations through Asymmetric Spin-Orbit Interaction},
author = {Yukinobu Fujimoto and Kazumasa Miyake and Hiroyasu Matsuura},
journal= {arXiv preprint arXiv:1502.02483},
year = {2015}
}
Comments
Published as an article in the Letter section of J. Phys. Soc. Jpn.; 11 pages, 2 figures; Supplemental Materials (20 pages) is referred as Ref. 23 in the main text