https://scholars.lib.ntu.edu.tw/handle/123456789/415608
Title: | Gapless spin liquid in the kagome Heisenberg antiferromagnet with Dzyaloshinskii-Moriya interactions | Authors: | Lee, Chih Yuan Normand, B. YING-JER KAO |
Keywords: | Physics - Strongly Correlated Electrons; Physics - Strongly Correlated Electrons | Issue Date: | 11-Dec-2018 | Journal Volume: | 98 | Journal Issue: | 22 | Source: | Physical Review B | Abstract: | © 2018 American Physical Society. A preponderance of evidence suggests that the ground state of the nearest-neighbor S=1/2 antiferromagnetic Heisenberg model on the kagome lattice is a gapless spin liquid. Many candidate materials for the realization of this model possess in addition a Dzyaloshinskii-Moriya (DM) interaction. We study this system by tensor-network methods and deduce that a weak but finite DM interaction is required to destabilize the gapless spin-liquid state. The critical magnitude, Dc/J≃0.012(2), lies well below the DM strength proposed in the kagome material herbertsmithite, indicating a need to reassess the apparent spin-liquid behavior reported in this system. |
Description: | 9 pages, 9 figures, to appear in Phys. Rev. B |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/415608 | ISSN: | 24699950 | DOI: | 10.1103/PhysRevB.98.224414 https://api.elsevier.com/content/abstract/scopus_id/85058322761 |
Appears in Collections: | 物理學系 |
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