α-RuCl3 and other Kitaev materials

Quantum spin liquids have been drawing much attention in recent years as a platform to develop future quantum technologies, such as topological quantum computing. In particular, Kitaev’s honeycomb model has provided a blueprint to realize a quantum spin liquid that has Majorana fermions as its eleme...

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Main Authors: Subin Kim, Bo Yuan, Young-June Kim
Format: Article
Language:English
Published: AIP Publishing LLC 2022-08-01
Series:APL Materials
Online Access:http://dx.doi.org/10.1063/5.0101512
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author Subin Kim
Bo Yuan
Young-June Kim
author_facet Subin Kim
Bo Yuan
Young-June Kim
author_sort Subin Kim
collection DOAJ
description Quantum spin liquids have been drawing much attention in recent years as a platform to develop future quantum technologies, such as topological quantum computing. In particular, Kitaev’s honeycomb model has provided a blueprint to realize a quantum spin liquid that has Majorana fermions as its elementary excitation. While numerous theoretical studies have shown intriguing properties of quantum spin liquids, an experimental realization remains elusive. The recent observation of the quantized thermal Hall effect in α-RuCl3 has brought us tantalizingly close to an experimental realization of Kitaev quantum spin liquids. However, various groups report conflicting results, indicating that the Kitaev quantum spin liquid phase might be very fragile and its properties strongly depend on the sample. Here, we present a short overview of the rise of α-RuCl3 as a prime candidate material for realizing Kitaev quantum spin liquids. There are already many excellent review papers on this topic, so the emphasis will be on the materials aspect, comparing different crystal growth methods and crystal morphologies. We also discuss current research attempts to find other candidate materials to realize Kitaev quantum spin liquids, mostly focused on 3d transition-metal compounds, such as transition-metal halides and layered cobalt compounds.
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spelling doaj.art-161e7dec0c684ace97cefcf34de09b6c2022-12-22T03:17:59ZengAIP Publishing LLCAPL Materials2166-532X2022-08-01108080903080903-1010.1063/5.0101512α-RuCl3 and other Kitaev materialsSubin Kim0Bo Yuan1Young-June Kim2Department of Physics, University of Toronto, Toronto, Ontario M5S 1A7, CanadaDepartment of Physics, University of Toronto, Toronto, Ontario M5S 1A7, CanadaDepartment of Physics, University of Toronto, Toronto, Ontario M5S 1A7, CanadaQuantum spin liquids have been drawing much attention in recent years as a platform to develop future quantum technologies, such as topological quantum computing. In particular, Kitaev’s honeycomb model has provided a blueprint to realize a quantum spin liquid that has Majorana fermions as its elementary excitation. While numerous theoretical studies have shown intriguing properties of quantum spin liquids, an experimental realization remains elusive. The recent observation of the quantized thermal Hall effect in α-RuCl3 has brought us tantalizingly close to an experimental realization of Kitaev quantum spin liquids. However, various groups report conflicting results, indicating that the Kitaev quantum spin liquid phase might be very fragile and its properties strongly depend on the sample. Here, we present a short overview of the rise of α-RuCl3 as a prime candidate material for realizing Kitaev quantum spin liquids. There are already many excellent review papers on this topic, so the emphasis will be on the materials aspect, comparing different crystal growth methods and crystal morphologies. We also discuss current research attempts to find other candidate materials to realize Kitaev quantum spin liquids, mostly focused on 3d transition-metal compounds, such as transition-metal halides and layered cobalt compounds.http://dx.doi.org/10.1063/5.0101512
spellingShingle Subin Kim
Bo Yuan
Young-June Kim
α-RuCl3 and other Kitaev materials
APL Materials
title α-RuCl3 and other Kitaev materials
title_full α-RuCl3 and other Kitaev materials
title_fullStr α-RuCl3 and other Kitaev materials
title_full_unstemmed α-RuCl3 and other Kitaev materials
title_short α-RuCl3 and other Kitaev materials
title_sort α rucl3 and other kitaev materials
url http://dx.doi.org/10.1063/5.0101512
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