Nature of Magnetic Excitations in the High-Field Phase of α-RuCl3

被引：39

作者：

Ponomaryov, A. N. ^{[2
,3
,8
]}

Zviagina, L. ^{[2
,3
]}

Wosnitza, J. ^{[2
,3
,4
]}

Lampen-Kelley, P. ^{[5
,6
]}

Banerjee, A. ^{[1
,9
]}

Yan, J-Q ^{[5
]}

Bridges, C. A. ^{[7
]}

Mandrus, D. G. ^{[5
,6
]}

Nagler, S. E. ^{[1
]}

Zvyagin, S. A. ^{[2
,3
]}

机构：

[1] Oak Ridge Natl Lab, Neutron Scattering Div, POB 2009, Oak Ridge, TN 37831 USA

[2] Helmholtz Zentrum Dresden Rossendorf, Dresden High Magnet Field Lab HLD EMFL, D-01328 Dresden, Germany

[3] Helmholtz Zentrum Dresden Rossendorf, Wurzburg Dresden Cluster Excellence Ctqmat, D-01328 Dresden, Germany

[4] Tech Univ Dresden, Inst Festkorper & Materialphys, D-01062 Dresden, Germany

[5] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37821 USA

[6] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37821 USA

[7] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37821 USA

[8] Helmholtz Zentrum Dresden Rossendorf, Inst Radiat Phys, D-01328 Dresden, Germany

[9] Purdue Univ, Dept Phys & Astron, W Lafayette, IN 47907 USA

来源：

PHYSICAL REVIEW LETTERS | 2020年 / 125卷 / 03期

关键词：

SPIN; ESR;

D O I：

10.1103/PhysRevLett.125.037202

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present comprehensive electron spin resonance (ESR) studies of in-plane oriented single crystals of alpha-RuCl3, a quasi-two-dimensional material with honeycomb structure, focusing on its high-field spin dynamics. The measurements were performed in magnetic fields up to 16 T, applied along the [110] and [100] directions. Several ESR modes were detected. Combining our findings with recent inelastic neutron- and Raman-scattering data, we identified most of the observed excitations. Most importantly, we show that the low-temperature ESR response beyond the boundary of the magnetically ordered region is dominated by single- and two-particle processes with magnons as elementary excitations. The peculiarities of the excitation spectrum in the vicinity of the critical field are discussed.

引用

页数：6

共 37 条

[1] ESR investigation on the breather mode and the spinon-breather dynamical crossover in Cu benzoate [J].

Asano, T ;

Nojiri, H ;

Inagaki, Y ;

Boucher, JP ;

Sakon, T ;

Ajiro, Y ;

Motokawa, M .

PHYSICAL REVIEW LETTERS, 2000, 84 (25) :5880-5883

[2]

Bachus S., ARXIV200602428

[3] Finite field regime for a quantum spin liquid in α-RuCl3 [J].

Balz, Christian ;

Lampen-Kelley, Aula ;

Banerjee, Arnab ;

Yan, Jiaqiang ;

Lu, Zhilun ;

Hu, Xinzhe ;

Yadav, Swapnil M. ;

Takano, Yasu ;

Liu, Yaohua ;

Tennant, D. Alan ;

Lumsden, Mark D. ;

Mandrus, David ;

Nagler, Stephen E. .

PHYSICAL REVIEW B, 2019, 100 (06)

[4]

Banerjee A, 2016, NAT MATER, V15, P733, DOI [10.1038/nmat4604, 10.1038/NMAT4604]

[5] Excitations in the field-induced quantum spin liquid state of α-RuCl3 [J].

Banerjee, Arnab ;

Lampen-Kelley, Paula ;

Knolle, Johannes ;

Balz, Christian ;

Aczel, Adam Anthony ;

Winn, Barry ;

Liu, Yaohua ;

Pajerowski, Daniel ;

Yan, Jiaqiang ;

Bridges, Craig A. ;

Savici, Andrei T. ;

Chakoumakos, Bryan C. ;

Lumsden, Mark D. ;

Tennant, David Alan ;

Moessner, Roderich ;

Mandrus, David G. ;

Nagler, Stephen E. .

NPJ QUANTUM MATERIALS, 2018, 3

[6] Neutron scattering in the proximate quantum spin liquid α-RuCl3 [J].

Banerjee, Arnab ;

Yan, Jiaqiang ;

Knolle, Johannes ;

Bridges, Craig A. ;

Stone, Matthew B. ;

Lumsden, Mark D. ;

Mandrus, David G. ;

Tennant, David A. ;

Moessner, Roderich ;

Nagler, Stephen E. .

SCIENCE, 2017, 356 (6342) :1055-1058

[7]

Baryakhtar V. G., 1985, SOV PHYS JETP, V61, P823

[8] Majorana fermions in the Kitaev quantum spin system α-RuCl3 [J].

Do, Seung-Hwan ;

Park, Sang-Youn ;

Yoshitake, Junki ;

Nasu, Joji ;

Motome, Yukitoshi ;

Kwon, Yong Seung ;

Adroja, D. T. ;

Voneshen, D. J. ;

Kim, Kyoo ;

Jang, T. -H. ;

Park, J. -H. ;

Choi, Kwang-Yong ;

Ji, Sungdae .

NATURE PHYSICS, 2017, 13 (11) :1079-+

[9]

Gass S., ARXIV200307081

[10] Magnon dispersion and dynamic spin response in three-dimensional spin models for α-RuCl3 [J].

Janssen, Lukas ;

Koch, Stefan ;

Vojta, Matthias .

PHYSICAL REVIEW B, 2020, 101 (17)

← 1 2 3 4 →