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Article: Nonlocal Effects of Low-Energy Excitations in Quantum-Spin-Liquid Candidate Cu3Zn(OH)6FBr
Title | Nonlocal Effects of Low-Energy Excitations in Quantum-Spin-Liquid Candidate Cu3Zn(OH)6FBr |
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Authors | |
Issue Date | 2021 |
Publisher | IOP Publishing, co-published with Chinese Physical Society. The Journal's web site is located at http://iopscience.iop.org/0256-307X |
Citation | Chinese Physics Letters, 2021, v. 38 n. 9, p. article no. 097501 How to Cite? |
Abstract | We systematically study the low-temperature specific heats for the two-dimensional kagome antiferromagnet, Cu3Zn(OH)6FBr. The specific heat exhibits a T1.7 dependence at low temperatures and a shoulder-like feature above it. We construct a microscopic lattice model of Z2 quantum spin liquid and perform large-scale quantum Monte Carlo simulations to show that the above behaviors come from the contributions from gapped anyons and magnetic impurities. Surprisingly, we find the entropy associated with the shoulder decreases quickly with grain size d, although the system is paramagnetic to the lowest temperature. While this can be simply explained by a core-shell picture in that the contribution from the interior state disappears near the surface, the 5.9-nm shell width precludes any trivial explanations. Such a large length scale signifies the coherence length of the nonlocality of the quantum entangled excitations in quantum spin liquid candidate, similar to Pippard's coherence length in superconductors. Our approach therefore offers a new experimental probe of the intangible quantum state of matter with topological order. |
Persistent Identifier | http://hdl.handle.net/10722/302473 |
ISSN | 2023 Impact Factor: 3.5 2023 SCImago Journal Rankings: 0.815 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Wei, Y | - |
dc.contributor.author | Ma, X | - |
dc.contributor.author | Feng, Z | - |
dc.contributor.author | Zhang, Y | - |
dc.contributor.author | Zhang, L | - |
dc.contributor.author | Yang, H | - |
dc.contributor.author | Qi, Y | - |
dc.contributor.author | Meng, Z | - |
dc.contributor.author | Wang, YC | - |
dc.contributor.author | Shi, Y | - |
dc.contributor.author | Li, S | - |
dc.date.accessioned | 2021-09-06T03:32:48Z | - |
dc.date.available | 2021-09-06T03:32:48Z | - |
dc.date.issued | 2021 | - |
dc.identifier.citation | Chinese Physics Letters, 2021, v. 38 n. 9, p. article no. 097501 | - |
dc.identifier.issn | 0256-307X | - |
dc.identifier.uri | http://hdl.handle.net/10722/302473 | - |
dc.description.abstract | We systematically study the low-temperature specific heats for the two-dimensional kagome antiferromagnet, Cu3Zn(OH)6FBr. The specific heat exhibits a T1.7 dependence at low temperatures and a shoulder-like feature above it. We construct a microscopic lattice model of Z2 quantum spin liquid and perform large-scale quantum Monte Carlo simulations to show that the above behaviors come from the contributions from gapped anyons and magnetic impurities. Surprisingly, we find the entropy associated with the shoulder decreases quickly with grain size d, although the system is paramagnetic to the lowest temperature. While this can be simply explained by a core-shell picture in that the contribution from the interior state disappears near the surface, the 5.9-nm shell width precludes any trivial explanations. Such a large length scale signifies the coherence length of the nonlocality of the quantum entangled excitations in quantum spin liquid candidate, similar to Pippard's coherence length in superconductors. Our approach therefore offers a new experimental probe of the intangible quantum state of matter with topological order. | - |
dc.language | eng | - |
dc.publisher | IOP Publishing, co-published with Chinese Physical Society. The Journal's web site is located at http://iopscience.iop.org/0256-307X | - |
dc.relation.ispartof | Chinese Physics Letters | - |
dc.rights | Chinese Physics Letters. Copyright © IOP Publishing, co-published with Chinese Physical Society. | - |
dc.rights | This is an author-created, un-copyedited version of an article published in [insert name of journal]. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at http://dx.doi.org/[insert DOI]. | - |
dc.title | Nonlocal Effects of Low-Energy Excitations in Quantum-Spin-Liquid Candidate Cu3Zn(OH)6FBr | - |
dc.type | Article | - |
dc.identifier.email | Meng, Z: zymeng@hku.hk | - |
dc.identifier.authority | Meng, Z=rp02524 | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1088/0256-307X/38/9/097501 | - |
dc.identifier.scopus | eid_2-s2.0-85117650754 | - |
dc.identifier.hkuros | 324743 | - |
dc.identifier.volume | 38 | - |
dc.identifier.issue | 9 | - |
dc.identifier.spage | article no. 097501 | - |
dc.identifier.epage | article no. 097501 | - |
dc.identifier.isi | WOS:000707215400001 | - |
dc.publisher.place | China | - |