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26 April 2024 |
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Observation of a Field-induced Quantum Spin Liquid in $alpha$-RuCl$_3$ | | S.-H. Baek
; S.-H. Do
; K.-Y. Choi
; Y. S. Kwon
; A.U.B. Wolter
; S. Nishimoto
; Jeroen van den Brink
; B. Büchner
; | | Date: |
6 Feb 2017 | | Abstract: | Topological quantum spin liquids (QSLs) are states of matter with remarkable
predicted properties -- an ability to create and braid quasiparticles in
certain topological QSLs equals the ability to perform topologically protected
quantum computation. There are various mathematical models with topological QSL
phases, but so far none has been physically realized. Here we show that
$alpha$-RuCl$_3$ exhibits a magnetic field-induced QSL ground-state. Nuclear
Magnetic Resonance measurements reveal that for fields larger than $sim 10$ T
a spin-gap opens up while resonance lines remain sharp, evidencing that spins
are quantum disordered. Such a field-induced, gapped topological QSL phase has
been predicted in the Kitaev model, which is closely associated to
$alpha$-RuCl$_3$. The quasiparticles in this phase of the Kitaev model have
the statistical properties required for universal topological quantum
computation. | | Source: | arXiv, 1702.1671 | | Services: | Forum | Review | PDF | Favorites | |
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