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PreprintarXiv licencearXiv

Dzyaloshinskii-Moriya interactions and deconfined criticality in SrCu2(BO3)2

  • Yasir Iqbal
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Abstract

SrCu2(BO3)2 is the leading candidate for deconfined criticality, yet theories of its critical regime omit the Dzyaloshinskii-Moriya (DM) interactions, which gap the kagome Dirac spin liquid. Adding them to the SU(2) gauge theory, we show that time reversal and a spin-orbit-locked glide forbid any gauge-singlet spinon mass to all orders. In-plane DM only twists the spinons, reconstructing the nodes below $0.03−0.17$ K, while out-of-plane DM is irrelevant and SO(5) anisotropy arises only at second order. The material thus remains a platform for deconfined criticality, which NMR can test, since a [100] field induces a Néel moment and a [001] field does not.

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Cite

BibTeXRIS
BibTeX
@misc{iqbal2026dzyaloshinskiimoriya,
  title = {{Dzyaloshinskii-Moriya interactions and deconfined criticality in SrCu$_2$(BO$_3$)$_2$}},
  author = {Yasir Iqbal},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.25081},
  eprint = {2610.25081},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.25081},
}
RIS
TY  - UNPB
TI  - Dzyaloshinskii-Moriya interactions and deconfined criticality in SrCu_2(BO_3)_2
AU  - Yasir Iqbal
PY  - 2026
DA  - 2026/10/18
PB  - arXiv
DO  - 10.48550/arxiv.2610.25081
UR  - https://arxiv.org/abs/2610.25081
AB  - SrCu_2(BO_3)_2 is the leading candidate for deconfined criticality, yet theories of its critical regime omit the Dzyaloshinskii-Moriya (DM) interactions, which gap the kagome Dirac spin liquid. Adding them to the SU(2) gauge theory, we show that time reversal and a spin-orbit-locked glide forbid any gauge-singlet spinon mass to all orders. In-plane DM only twists the spinons, reconstructing the nodes below $0.03−0.17$ K, while out-of-plane DM is irrelevant and SO(5) anisotropy arises only at second order. The material thus remains a platform for deconfined criticality, which NMR can test, since a [100] field induces a Néel moment and a [001] field does not.
ER  -