Abstract
We present a theoretical study of field-induced magnetic phases in the honeycomb Kitaev-Heisenberg model, which is believed to describe the essential physics of Mott insulators with strong spin-orbit coupling such as A2IrO3 and α-RuCl3. We obtain a rich finite temperature phase diagram in which the competition between the Zeeman coupling and thermal fluctuations gives rise to both collinear zigzag phases and noncoplanar magnetic orders. Our large-scale classical Monte Carlo simulations also unveil intriguing commensurate-incommensurate transitions and multiple-Q incommensurate phases at high field. Experimental implications are also discussed.
Original language | English (US) |
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Article number | 144427 |
Journal | Physical Review B |
Volume | 95 |
Issue number | 14 |
DOIs | |
State | Published - Apr 21 2017 |
Bibliographical note
Publisher Copyright:© 2017 American Physical Society.