Phonon dynamics in the chiral Kitaev spin liquid

Singh, Susmita; Stavropoulos, P. Peter; Perkins, Natalia B.

doi:10.1103/PhysRevB.110.094431

Title: Phonon dynamics in the chiral Kitaev spin liquid

Journal Article · 23 September 2024 · Physical Review. B

DOI: https://doi.org/10.1103/PhysRevB.110.094431 · OSTI ID:3004503

Singh, Susmita ^[1];

^[1];

^[1]

Univ. of Minnesota, Minneapolis, MN (United States)

Here, we investigate the effect of a magnetic field on the extended Kitaev spin-liquid state through phonon dynamics. Using a constrained fermionic self-consistent mean field method, we analyze the quantum spin liquid (QSL) ground state for the extended Kitaev model with both the Zeeman term and the perturbative three-spin interaction term 𝜅. Our results demonstrate the dependence of the stability of the Kitaev QSL state on the field direction, consistent with findings in the literature. Additionally, we calculate the phonon dynamics for acoustic phonons coupled to the Majorana fermion excitations of the Kitaev spin-liquid state, discussing the temperature and field evolution of these quantities.

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Research Organization:: Univ. of Minnesota, Minneapolis, MN (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC0018056

OSTI ID:: 3004503

Journal Information:: Physical Review. B, Journal Name: Physical Review. B Journal Issue: 9 Vol. 110; ISSN 2469-9969; ISSN 2469-9950

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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