J. Phys. Soc. Jpn. 89, 013702 (2020) [5 Pages]
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LETTERS

Double-Q Chiral Stripe in the d–p Model with Strong Spin–Charge Coupling

Ryota Yambe, and Satoru Hayami
+ Affiliations
Department of Physics, Hokkaido University, Sapporo 060-0810, Japan
Received October 22, 2019; Accepted November 11, 2019; Published December 9, 2019

We investigate the stability of multiple-Q spiral states in d–p electron systems with the strong spin–charge coupling. By using variational calculations on a square lattice, we find that the double-Q state with the scalar chirality density wave, which has been studied in the weak spin–charge coupling regime, becomes the ground state even in the strong spin–charge coupling regime by considering the effect of the d–p hybridization. We also show that the regions where the double-Q state is stabilized are widely extended for introducing the antiferromagnetic superexchange interaction between nearest-neighbor localized spins.

©2020 The Physical Society of Japan
https://doi.org/10.7566/JPSJ.89.013702

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