Impurity-induced resonant spinon zero modes in Dirac quantum spin liquids

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorChen, Guangze
dc.contributor.authorLado, Jose
dc.contributor.departmentCorrelated Quantum Materials (CQM)
dc.contributor.departmentDepartment of Applied Physicsen
dc.date.accessioned2020-09-25T07:04:57Z
dc.date.available2020-09-25T07:04:57Z
dc.date.issued2020-09-22
dc.description.abstractQuantum spin liquids are strongly correlated phases of matter displaying a highly entangled ground state. Because of their unconventional nature, finding experimental signatures of these states has proven to be a remarkable challenge. Here we show that the effects of local impurities can provide strong signatures of a Dirac quantum spin-liquid state. Focusing on a gapless Dirac quantum spin-liquid state as realized in NaYbO2, we show that a single magnetic impurity coupled to the quantum spin-liquid state creates a resonant spinon peak at zero frequency, coexisting with the original Dirac spinons. We explore the spatial dependence of this zero-bias resonance and show how different zero modes stemming from several impurities interfere. We finally address how such spinon zero-mode resonances can be experimentally probed with inelastic spectroscopy and electrically driven paramagnetic resonance with scanning tunnel microscopy. Our results put forward impurity engineering as a means of identifying Dirac quantum spin liquids with scanning probe techniques, highlighting the dramatic impact of magnetic impurities in a macroscopically entangled many-body ground state.en
dc.description.versionPeer revieweden
dc.format.extent9
dc.format.extent1-9
dc.format.mimetypeapplication/pdf
dc.identifier.citationChen , G & Lado , J 2020 , ' Impurity-induced resonant spinon zero modes in Dirac quantum spin liquids ' , PHYSICAL REVIEW RESEARCH , vol. 2 , no. 3 , 033466 , pp. 1-9 . https://doi.org/10.1103/PhysRevResearch.2.033466en
dc.identifier.doi10.1103/PhysRevResearch.2.033466
dc.identifier.issn2643-1564
dc.identifier.otherPURE UUID: 52fccfd5-a2b2-4a86-b305-01c50a055c70
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/52fccfd5-a2b2-4a86-b305-01c50a055c70
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/51650096/Chen_Lado_Impurity_induced.PhysRevResearch.2.033466.pdf
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/46596
dc.identifier.urnURN:NBN:fi:aalto-202009255526
dc.language.isoenen
dc.publisherAmerican Physical Society
dc.relation.ispartofseriesPHYSICAL REVIEW RESEARCHen
dc.relation.ispartofseriesVolume 2, issue 3en
dc.rightsopenAccessen
dc.titleImpurity-induced resonant spinon zero modes in Dirac quantum spin liquidsen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionpublishedVersion
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