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Arh T, Gomilšek M, Prelovšek P, Pregelj M, Klanjšek M, Ozarowski A, Clark SJ, Lancaster T, Sun W, Mi JX, Zorko A. Origin of Magnetic Ordering in a Structurally Perfect Quantum Kagome Antiferromagnet. PHYSICAL REVIEW LETTERS 2020; 125:027203. [PMID: 32701346 DOI: 10.1103/physrevlett.125.027203] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 06/12/2020] [Indexed: 06/11/2023]
Abstract
The ground state of the simple Heisenberg nearest-neighbor quantum kagome antiferromagnetic model is a magnetically disordered spin liquid, yet various perturbations may lead to fundamentally different states. Here we disclose the origin of magnetic ordering in the structurally perfect kagome material YCu_{3}(OH)_{6}Cl_{3}, which is free of the widespread impurity problem. Ab initio calculations and modeling of its magnetic susceptibility reveal that, similar to the archetypal case of herbertsmithite, the nearest-neighbor exchange is by far the dominant isotropic interaction. Dzyaloshinskii-Moriya (DM) anisotropy deduced from electron spin resonance, susceptibility, and specific-heat data is, however, significantly larger than in herbertsmithite. By enhancing spin correlations within kagome planes, this anisotropy is essential for magnetic ordering. Our study isolates the effect of DM anisotropy from other perturbations and unambiguously confirms the predicted phase diagram.
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Affiliation(s)
- T Arh
- Jožef Stefan Institute, Jamova c. 39, SI-1000 Ljubljana, Slovenia
- Faculty of Mathematics and Physics, University of Ljubljana, Jadranska u. 19, SI-1000 Ljubljana, Slovenia
| | - M Gomilšek
- Jožef Stefan Institute, Jamova c. 39, SI-1000 Ljubljana, Slovenia
- Centre for Materials Physics, Durham University, South Road, Durham DH1 3LE, United Kingdom
| | - P Prelovšek
- Jožef Stefan Institute, Jamova c. 39, SI-1000 Ljubljana, Slovenia
| | - M Pregelj
- Jožef Stefan Institute, Jamova c. 39, SI-1000 Ljubljana, Slovenia
| | - M Klanjšek
- Jožef Stefan Institute, Jamova c. 39, SI-1000 Ljubljana, Slovenia
| | - A Ozarowski
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, USA
| | - S J Clark
- Centre for Materials Physics, Durham University, South Road, Durham DH1 3LE, United Kingdom
| | - T Lancaster
- Centre for Materials Physics, Durham University, South Road, Durham DH1 3LE, United Kingdom
| | - W Sun
- Fujian Provincial Key Laboratory of Advanced Materials, Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen 361005, Fujian Province, People's Republic of China
| | - J-X Mi
- Fujian Provincial Key Laboratory of Advanced Materials, Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen 361005, Fujian Province, People's Republic of China
| | - A Zorko
- Jožef Stefan Institute, Jamova c. 39, SI-1000 Ljubljana, Slovenia
- Faculty of Mathematics and Physics, University of Ljubljana, Jadranska u. 19, SI-1000 Ljubljana, Slovenia
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Mishchenko AS, Nagaosa N, Shen ZX, De Filippis G, Cataudella V, Devereaux TP, Bernhard C, Kim KW, Zaanen J. Charge dynamics of doped holes in high Tc cuprate superconductors: a clue from optical conductivity. PHYSICAL REVIEW LETTERS 2008; 100:166401. [PMID: 18518226 DOI: 10.1103/physrevlett.100.166401] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2007] [Indexed: 05/26/2023]
Abstract
The charge dynamics in weakly hole doped high temperature superconductors is studied in terms of the accurate numerical solution to a model of a single hole interacting with a quantum lattice in an antiferromagnetic background, and accurate far-infrared ellipsometry measurements. The experimentally observed two electronic bands in the infrared spectrum can be identified in terms of the interplay between the electron correlation and electron-phonon interaction resolving the long standing mystery of the midinfrared band.
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Affiliation(s)
- A S Mishchenko
- Cross-Correlated Materials Research Group, ASI, RIKEN, Wako 351-0198, Japan
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Zotos X, Prelovsek P. Evidence for ideal insulating or conducting state in a one-dimensional integrable system. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 53:983-986. [PMID: 9983535 DOI: 10.1103/physrevb.53.983] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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