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Quasiparticle Interference in Kitaev Quantum Spin Liquids
Ammar Jahin1, Hao Zhang1,2, Gábor B Halász3,4
1Los Alamos National Laboratory, Theoretical Divison, T-4, Los Alamos, New Mexico 87545, USA.
Abstract:
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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