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- Publisher Website: 10.1103/PhysRevLett.125.166801
- Scopus: eid_2-s2.0-85094934110
- PMID: 33124864
- WOS: WOS:000577236900005
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Article: Topological Phase Transitions in Disordered Electric Quadrupole Insulators
Title | Topological Phase Transitions in Disordered Electric Quadrupole Insulators |
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Authors | |
Keywords | Chiral symmetry Crystalline symmetry Electric quadrupoles Insulating phase Quadrupole moments |
Issue Date | 2020 |
Publisher | American Physical Society. The Journal's web site is located at https://journals.aps.org/prl/ |
Citation | Physical Review Letters, 2020, v. 125 n. 16, p. article no. 166801 How to Cite? |
Abstract | We investigate disorder-driven topological phase transitions in quantized electric quadrupole insulators in two dimensions. We show that chiral symmetry can protect the quantization of the quadrupole moment qxy, such that the higher-order topological invariant is well defined even when disorder has broken all crystalline symmetries. Moreover, nonvanishing qxy and consequent corner modes can be induced from a trivial insulating phase by disorder that preserves chiral symmetry. The critical points of such topological phase transitions are marked by the occurrence of extended boundary states even in the presence of strong disorder. We provide a systematic characterization of these disorder-driven topological phase transitions from both bulk and boundary descriptions. © 2020 American Physical Society. |
Persistent Identifier | http://hdl.handle.net/10722/290968 |
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 | Li, CA | - |
dc.contributor.author | Fu, B | - |
dc.contributor.author | HU, ZA | - |
dc.contributor.author | Li, J | - |
dc.contributor.author | Shen, SQ | - |
dc.date.accessioned | 2020-11-02T05:49:40Z | - |
dc.date.available | 2020-11-02T05:49:40Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | Physical Review Letters, 2020, v. 125 n. 16, p. article no. 166801 | - |
dc.identifier.issn | 0031-9007 | - |
dc.identifier.uri | http://hdl.handle.net/10722/290968 | - |
dc.description.abstract | We investigate disorder-driven topological phase transitions in quantized electric quadrupole insulators in two dimensions. We show that chiral symmetry can protect the quantization of the quadrupole moment qxy, such that the higher-order topological invariant is well defined even when disorder has broken all crystalline symmetries. Moreover, nonvanishing qxy and consequent corner modes can be induced from a trivial insulating phase by disorder that preserves chiral symmetry. The critical points of such topological phase transitions are marked by the occurrence of extended boundary states even in the presence of strong disorder. We provide a systematic characterization of these disorder-driven topological phase transitions from both bulk and boundary descriptions. © 2020 American Physical Society. | - |
dc.language | eng | - |
dc.publisher | American Physical Society. The Journal's web site is located at https://journals.aps.org/prl/ | - |
dc.relation.ispartof | Physical Review Letters | - |
dc.rights | Copyright [2020] by The American Physical Society. This article is available online at [http://dx.doi.org/10.1103/PhysRevLett.125.166801]. | - |
dc.subject | Chiral symmetry | - |
dc.subject | Crystalline symmetry | - |
dc.subject | Electric quadrupoles | - |
dc.subject | Insulating phase | - |
dc.subject | Quadrupole moments | - |
dc.title | Topological Phase Transitions in Disordered Electric Quadrupole Insulators | - |
dc.type | Article | - |
dc.identifier.email | Fu, B: fubo@hku.hk | - |
dc.identifier.email | Shen, SQ: sshen@hkucc.hku.hk | - |
dc.identifier.authority | Shen, SQ=rp00775 | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1103/PhysRevLett.125.166801 | - |
dc.identifier.pmid | 33124864 | - |
dc.identifier.scopus | eid_2-s2.0-85094934110 | - |
dc.identifier.hkuros | 318558 | - |
dc.identifier.volume | 125 | - |
dc.identifier.issue | 16 | - |
dc.identifier.spage | article no. 166801 | - |
dc.identifier.epage | article no. 166801 | - |
dc.identifier.isi | WOS:000577236900005 | - |
dc.publisher.place | United States | - |
dc.identifier.issnl | 0031-9007 | - |