Dynamic structure factor of the antiferromagnetic Kitaev model in large magnetic fields

Schellenberger A, Hörmann M, Schmidt KP (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Physical Review B American Physical Society

Book Volume: 106

Article Number: 104403

Journal Issue: 10

DOI: 10.1103/PhysRevB.106.104403

Abstract

We investigate the dynamic structure factor of the antiferromagnetic Kitaev honeycomb model in a magnetic field by applying perturbative continuous unitary transformations about the high-field limit. One- and two-quasiparticle properties of the dressed elementary spin-flip excitations of the high-field polarized phase are calculated, which account for most of the spectral weight in the dynamic structure factor. We discuss the evolution of spectral features in these quasiparticle sectors in terms of one-quasiparticle dispersions, two-quasiparticle continua, the formation of antibound states, and quasiparticle decay. In particular, a comparably strong spectral feature above the upper edge of the upmost two-quasiparticle continuum represents three antibound states which form due to nearest-neighbor density-density interactions.

Authors with CRIS profile

Andreas Schellenberger Lehrstuhl für Theoretische Physik Max Hörmann Lehrstuhl für Theoretische Physik Kai Phillip Schmidt Professur für Theoretische Physik

How to cite

APA:

Schellenberger, A., Hörmann, M., & Schmidt, K.P. (2022). Dynamic structure factor of the antiferromagnetic Kitaev model in large magnetic fields. Physical Review B, 106(10). https://doi.org/10.1103/PhysRevB.106.104403

MLA:

Schellenberger, Andreas, Max Hörmann, and Kai Phillip Schmidt. "Dynamic structure factor of the antiferromagnetic Kitaev model in large magnetic fields." Physical Review B 106.10 (2022).

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