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- Publisher Website: 10.1103/PhysRevLett.120.147204
- Scopus: eid_2-s2.0-85045005650
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Article: Field-Driven Quantum Criticality in the Spinel Magnet ZnCr2Se4
Title | Field-Driven Quantum Criticality in the Spinel Magnet ZnCr2Se4 |
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Authors | |
Issue Date | 2018 |
Publisher | American Physical Society. The Journal's web site is located at http://journals.aps.org/prl/ |
Citation | Physical Review Letters, 2018, v. 120 n. 14, article no. 147204 How to Cite? |
Abstract | © 2018 American Physical Society. We report detailed dc and ac magnetic susceptibilities, specific heat, and thermal conductivity measurements on the frustrated magnet ZnCr2Se4. At low temperatures, with an increasing magnetic field, this spinel material goes through a series of spin state transitions from the helix spin state to the spiral spin state and then to the fully polarized state. Our results indicate a direct quantum phase transition from the spiral spin state to the fully polarized state. As the system approaches the quantum criticality, we find strong quantum fluctuations of the spins with behaviors such as an unconventional T2-dependent specific heat and temperature-independent mean free path for the thermal transport. We complete the full phase diagram of ZnCr2Se4 under the external magnetic field and propose the possibility of frustrated quantum criticality with extended densities of critical modes to account for the unusual low-energy excitations in the vicinity of the criticality. Our results reveal that ZnCr2Se4 is a rare example of a 3D magnet exhibiting a field-driven quantum criticality with unconventional properties. |
Persistent Identifier | http://hdl.handle.net/10722/266152 |
ISSN | 2021 Impact Factor: 9.185 2020 SCImago Journal Rankings: 3.688 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Gu, C. C. | - |
dc.contributor.author | Zhao, Z. Y. | - |
dc.contributor.author | Chen, X. L. | - |
dc.contributor.author | Lee, M. | - |
dc.contributor.author | Choi, E. S. | - |
dc.contributor.author | Han, Y. Y. | - |
dc.contributor.author | Ling, L. S. | - |
dc.contributor.author | Pi, L. | - |
dc.contributor.author | Zhang, Y. H. | - |
dc.contributor.author | Chen, G. | - |
dc.contributor.author | Yang, Z. R. | - |
dc.contributor.author | Zhou, H. D. | - |
dc.contributor.author | Sun, X. F. | - |
dc.date.accessioned | 2018-12-27T01:59:00Z | - |
dc.date.available | 2018-12-27T01:59:00Z | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | Physical Review Letters, 2018, v. 120 n. 14, article no. 147204 | - |
dc.identifier.issn | 0031-9007 | - |
dc.identifier.uri | http://hdl.handle.net/10722/266152 | - |
dc.description.abstract | © 2018 American Physical Society. We report detailed dc and ac magnetic susceptibilities, specific heat, and thermal conductivity measurements on the frustrated magnet ZnCr2Se4. At low temperatures, with an increasing magnetic field, this spinel material goes through a series of spin state transitions from the helix spin state to the spiral spin state and then to the fully polarized state. Our results indicate a direct quantum phase transition from the spiral spin state to the fully polarized state. As the system approaches the quantum criticality, we find strong quantum fluctuations of the spins with behaviors such as an unconventional T2-dependent specific heat and temperature-independent mean free path for the thermal transport. We complete the full phase diagram of ZnCr2Se4 under the external magnetic field and propose the possibility of frustrated quantum criticality with extended densities of critical modes to account for the unusual low-energy excitations in the vicinity of the criticality. Our results reveal that ZnCr2Se4 is a rare example of a 3D magnet exhibiting a field-driven quantum criticality with unconventional properties. | - |
dc.language | eng | - |
dc.publisher | American Physical Society. The Journal's web site is located at http://journals.aps.org/prl/ | - |
dc.relation.ispartof | Physical Review Letters | - |
dc.title | Field-Driven Quantum Criticality in the Spinel Magnet ZnCr2Se4 | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1103/PhysRevLett.120.147204 | - |
dc.identifier.scopus | eid_2-s2.0-85045005650 | - |
dc.identifier.volume | 120 | - |
dc.identifier.issue | 14 | - |
dc.identifier.spage | article no. 147204 | - |
dc.identifier.epage | article no. 147204 | - |
dc.identifier.eissn | 1079-7114 | - |
dc.identifier.isi | WOS:000429227100008 | - |
dc.identifier.issnl | 0031-9007 | - |