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Theory of quasiparticle interference in Kitaev quantum spin liquids

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arxiv 2407.03415 v2 pith:ZFFJPCZK submitted 2024-07-03 cond-mat.str-el

classification cond-mat.str-el
keywords kitaevspintunnelingconductancefractionalizedinterferencequantumquasiparticle
verification ladder T0 review T1 audit T2 compute T3 formal
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We study quasiparticle interference (QPI) in the Kitaev quantum spin liquid (QSL) for electrons tunneling into the QSL. The local tunneling conductance around a spin vacancy or localized vison reveals unique features associated with fractionalized Majorana fermions, chargons, and visons. In certain parameter regimes, the single-spinon density of states and momentum dispersion can both be directly extracted from the tunneling conductance. Our results suggest that QPI is a promising tool for identifying the Kitaev QSL and its fractionalized excitations.

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