Unusual Phonon Heat Transport in α-RuCl3: Strong Spin-Phonon Scattering and Field-Induced Spin Gap

被引：160

作者：

Hentrich, Richard ^{[1
]}

Wolter, Anja U. B. ^{[1
]}

Zotos, Xenophon ^{[1
,2
,3
]}

Brenig, Wolfram ^{[4
]}

Nowak, Domenic ^{[5
]}

Isaeva, Anna ^{[5
]}

Doert, Thomas ^{[5
]}

Banerjee, Arnab ^{[6
]}

Lampen-Kelley, Paula ^{[7
,8
]}

Mandrus, David G. ^{[7
,8
]}

Nagler, Stephen E. ^{[6
]}

Sears, Jennifer ^{[9
,10
]}

Kim, Young-June ^{[9
,10
]}

Buechner, Bernd ^{[1
,11
,12
]}

Hess, Christian ^{[1
,12
]}

机构：

[1] Leibniz Inst Solid State & Mat Res, D-01069 Dresden, Germany

[2] Univ Crete, ITCP, Iraklion 71003, Greece

[3] Univ Crete, Dept Phys, CCQCN, Iraklion 71003, Greece

[4] TU Braunschweig, Inst Theoret Phys, D-38106 Braunschweig, Germany

[5] Tech Univ Dresden, Dept Chem & Food Chem, D-01062 Dresden, Germany

[6] Oak Ridge Natl Lab, Quantum Condensed Matter Div, Oak Ridge, TN USA

[7] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN USA

[8] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA

[9] Univ Toronto, Dept Phys, 60 St George St, Toronto, ON M5S 1A7, Canada

[10] Univ Toronto, Ctr Quantum Mat, 60 St George St, Toronto, ON M5S 1A7, Canada

[11] Tech Univ Dresden, Inst Solid State Phys, D-01069 Dresden, Germany

[12] Tech Univ Dresden, Ctr Transport & Devices, D-01069 Dresden, Germany

来源：

PHYSICAL REVIEW LETTERS | 2018年 / 120卷 / 11期

基金：

加拿大自然科学与工程研究理事会;

关键词：

LATTICE THERMAL CONDUCTIVITY; LIQUID; MAGNET; MODEL;

D O I：

10.1103/PhysRevLett.120.117204

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The honeycomb Kitaev-Heisenberg model is a source of a quantum spin liquid with Majorana fermions and gauge flux excitations as fractional quasiparticles. Here we unveil the highly unusual low-temperature heat conductivity kappa of alpha-RuCl (3), a prime candidate for realizing such physics: beyond a magnetic field of B-c approximate to 7.5 T, kappa increases by about one order of magnitude, both for in-plane as well as out-of-plane transport. This clarifies the unusual magnetic field dependence unambiguously to be the result of severe scattering of phonons off putative Kitaev-Heisenberg excitations in combination with a drastic field-induced change of the magnetic excitation spectrum. In particular, an unexpected, large energy gap arises, which increases linearly with the magnetic field, reaching remarkable (h) over bar omega(0) /k(B) approximate to 50 K at 18 T.

引用

页数：6

共 50 条

[41] THEORY OF SPIN-PHONON AVALANCHE IN PARAMAGNETIC CRYSTALS .1. SPATIAL PHONON TRANSPORT
LIU, HK
WAGNER, PE
JOSEPH, RI
JOURNAL OF PHYSICS PART C SOLID STATE PHYSICS, 1972, 5 (08): : 828 - &
[42] Spin-phonon coupling in multiferroic YbMnO3 studied by Raman scattering
Fukumura, H.
Hasuike, N.
Harima, H.
Kisoda, K.
Fukae, K.
Yoshimura, T.
Fujimura, N.
JOURNAL OF PHYSICS-CONDENSED MATTER, 2009, 21 (06)
[43] Thermodynamic Perspective on Field-Induced Behavior of α-RuCl3
Bachus, S.
Kaib, D. A. S.
Tokiwa, Y.
Jesche, A.
Tsurkan, V
Loidl, A.
Winter, S. M.
Tsirlin, A. A.
Valenti, R.
Gegenwart, P.
PHYSICAL REVIEW LETTERS, 2020, 125 (09)
[44] SPECIFIC HEAT DUE TO SPIN-PHONON INTERACTIONS IN PARAMAGNETIC CRYSTALS
TUCKER, JW
PROCEEDINGS OF THE PHYSICAL SOCIETY OF LONDON, 1965, 85 (545P): : 559 - &
[45] Field-induced magnon excitation and in-gap absorption in the Kitaev candidate RuCl3
Shi, L. Y.
Liu, Y. Q.
Lin, T.
Zhang, M. Y.
Zhang, S. J.
Wang, L.
Shi, Y. G.
Dong, T.
Wang, N. L.
PHYSICAL REVIEW B, 2018, 98 (09)
[46] The manifestation of spin-phonon coupling in CaMnO3
Goian, V.
Kamba, S.
Borodavka, F.
Nuzhnyy, D.
Savinov, M.
Belik, A. A.
JOURNAL OF APPLIED PHYSICS, 2015, 117 (16)
[47] Evidence of spin-phonon coupling in CrSiTe3
Milosavljevic, A.
Solajic, A.
Pesic, J.
Liu, Yu
Petrovic, C.
Lazarevic, N.
Popovic, Z. V.
PHYSICAL REVIEW B, 2018, 98 (10)
[48] Spin-phonon coupling in monoclinic BiCrO3
Araujo, B. S.
Arevalo-Lopez, A. M.
Santos, C. C.
Attfield, J. P.
Paschoal, C. W. A.
Ayala, A. P.
JOURNAL OF APPLIED PHYSICS, 2020, 127 (11)
[49] STUDY OF RESONANT PHONON SCATTERING IN KC1 - LI USING SPIN-PHONON INTERACTION
WALTON, D
SOLID STATE COMMUNICATIONS, 1967, 5 (09) : R41 - &
[50] Field-Induced Single-Ion Magnetism Based on Spin-Phonon Relaxation in a Distorted Octahedral High-Spin Cobalt(II) Complex
Ishikawa, Ryuta
Horii, Yoji
Nakanishi, Ryo
Ueno, Shunya
Breedlove, Brian K.
Yamashita, Masahiro
Kawata, Satoshi
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, 2016, (20) : 3233 - 3239

← 1 2 3 4 5 →