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강상관계 물질 연구단
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Theory of Two-Dimensional Nonlinear Spectroscopy for the Kitaev Spin Liquid

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Title
Theory of Two-Dimensional Nonlinear Spectroscopy for the Kitaev Spin Liquid
Author(s)
Wonjune Choi; Ki Hoon Lee; Yong Baek Kim
Publication Date
2020-03
Journal
PHYSICAL REVIEW LETTERS, v.124, no.11, pp.117205 -
Publisher
AMER PHYSICAL SOC
Abstract
Unambiguous identification of fractionalized excitations in quantum spin liquids has been a long-standing issue in correlated topological phases. Conventional spectroscopic probes, such as the dynamical spin structure factor, can only detect composites of fractionalized excitations, leading to a broad continuum in energy. Lacking a clear signature in conventional probes has been the biggest obstacle in the field. In this work, we theoretically investigate what kinds of distinctive signatures of fractionalized excitations can be probed in two-dimensional nonlinear spectroscopy by considering the exactly solvable Kitaev spin liquids. We demonstrate the existence of a number of salient features of the Majorana fermions and fluxes in two-dimensional nonlinear spectroscopy, which provide crucial information about such excitations. © 2020 American Physical Society
URI
https://pr.ibs.re.kr/handle/8788114/7143
ISSN
0031-9007
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > Journal Papers (저널논문)
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