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Stacking disorder and thermal transport properties of α-RuCl3
Abstract
α-RuCl3, a well-known candidate material for Kitaev quantum spin liquid, is prone to stacking disorder due to the weak van der Waals bonding between the honeycomb layers. After a decade of intensive experimental and theoretical studies, the detailed correlation between stacking degree of freedom, structure transition, magnetic, and thermal transport properties remains unresolved. In this work, we reveal the effects of a small amount of stacking disorder inherent even in high quality α-RuCl3 crystals. This small amount of stacking disorder results in the variation of the magnetic ordering temperature, and it suppresses the structure transition and thermal conductivity. Crystals with a minimal amount of stacking disorder have a TN > 7.4 K and exhibit a well-defined structure transition around 140 K upon cooling. For those with more stacking faults and a TN below 7 K, the structure transition occurs well below 140 K upon cooling and is incomplete, manifested by the diffuse streaks and the coexistence of both high-temperature and low-temperature phases down to the lowest measurement temperature. Both types of crystals exhibit oscillatory field-dependent thermal conductivity and a plateaulike feature in thermal Hall resistivity in the field-induced quantum spin liquid state. However, α-RuCl3 crystals with a minimal amount ofmore »
- Authors:
-
[1];
[1];
[1];
[2];
[1];
[1];
[1];
[1];
[1];
[1]
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
- OSTI Identifier:
- 2281154
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Materials
- Additional Journal Information:
- Journal Volume: 8; Journal Issue: 1; Journal ID: ISSN 2475-9953
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; magnetic order; thermal conductivity; layered crystals; magnetic insulators; single crystal materials; crystal growth; specific heat measurements; x-ray diffraction
Citation Formats
Zhang, Heda, McGuire, Michael A., May, Andrew F., Chao, Hsin-Yun, Zheng, Qiang, Chi, Miaofang, Sales, Brian C., Mandrus, David G., Nagler, Stephen E., Miao, Hu, Ye, Feng, and Yan, Jiaqiang. Stacking disorder and thermal transport properties of α-RuCl3. United States: N. p., 2024.
Web. doi:10.1103/physrevmaterials.8.014402.
Zhang, Heda, McGuire, Michael A., May, Andrew F., Chao, Hsin-Yun, Zheng, Qiang, Chi, Miaofang, Sales, Brian C., Mandrus, David G., Nagler, Stephen E., Miao, Hu, Ye, Feng, & Yan, Jiaqiang. Stacking disorder and thermal transport properties of α-RuCl3. United States. https://doi.org/10.1103/physrevmaterials.8.014402
Zhang, Heda, McGuire, Michael A., May, Andrew F., Chao, Hsin-Yun, Zheng, Qiang, Chi, Miaofang, Sales, Brian C., Mandrus, David G., Nagler, Stephen E., Miao, Hu, Ye, Feng, and Yan, Jiaqiang. Mon .
"Stacking disorder and thermal transport properties of α-RuCl3". United States. https://doi.org/10.1103/physrevmaterials.8.014402.
@article{osti_2281154,
title = {Stacking disorder and thermal transport properties of α-RuCl3},
author = {Zhang, Heda and McGuire, Michael A. and May, Andrew F. and Chao, Hsin-Yun and Zheng, Qiang and Chi, Miaofang and Sales, Brian C. and Mandrus, David G. and Nagler, Stephen E. and Miao, Hu and Ye, Feng and Yan, Jiaqiang},
abstractNote = {α-RuCl3, a well-known candidate material for Kitaev quantum spin liquid, is prone to stacking disorder due to the weak van der Waals bonding between the honeycomb layers. After a decade of intensive experimental and theoretical studies, the detailed correlation between stacking degree of freedom, structure transition, magnetic, and thermal transport properties remains unresolved. In this work, we reveal the effects of a small amount of stacking disorder inherent even in high quality α-RuCl3 crystals. This small amount of stacking disorder results in the variation of the magnetic ordering temperature, and it suppresses the structure transition and thermal conductivity. Crystals with a minimal amount of stacking disorder have a TN > 7.4 K and exhibit a well-defined structure transition around 140 K upon cooling. For those with more stacking faults and a TN below 7 K, the structure transition occurs well below 140 K upon cooling and is incomplete, manifested by the diffuse streaks and the coexistence of both high-temperature and low-temperature phases down to the lowest measurement temperature. Both types of crystals exhibit oscillatory field-dependent thermal conductivity and a plateaulike feature in thermal Hall resistivity in the field-induced quantum spin liquid state. However, α-RuCl3 crystals with a minimal amount of stacking disorder have a higher thermal conductivity that pushes the thermal Hall conductivity to be closer to the half-integer quantized value. Importantly, these findings demonstrate a strong correlation between layer stacking, structure transition, magnetic, and thermal transport properties, underscoring the importance of interlayer coupling in α-RuCl3 despite the weak van der Waals bonding.},
doi = {10.1103/physrevmaterials.8.014402},
journal = {Physical Review Materials},
number = 1,
volume = 8,
place = {United States},
year = {Mon Jan 08 00:00:00 EST 2024},
month = {Mon Jan 08 00:00:00 EST 2024}
}
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