Quantum criticality of spinons

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dc.contributor.authorHe, Feng
dc.contributor.authorJiang, Yuzhu
dc.contributor.authorYu, Yi-Cong
dc.contributor.authorLin, H.-Q.
dc.contributor.authorGuan, Xi-Wen
dc.date.accessioned2021-09-08T03:54:38Z
dc.date.available2021-09-08T03:54:38Z
dc.date.issued2017
dc.date.updated2020-11-23T11:00:12Z
dc.description.abstractMagnon bound states emerging in one-dimensional (1D) spin chains still lack a rigorous understanding. In this Rapid Communication we show that the length-1 spin strings significantly dominate the critical properties of spinons, magnons, and free fermions in the 1D antiferromagnetic spin-1/2 chain. Using the Bethe ansatz solution, we analytically calculate the scaling functions of the thermal and magnetic properties of the model, providing a rigorous understanding of the quantum criticality of spinons. It turns out that the double maxima in specific heat elegantly mark two crossover temperatures fanning out from the critical point, indicating three quantum phases: the Tomonaga-Luttinger liquid (TLL), the quantum critical, and fully polarized ferromagnetic phases. For the TLL phase, the Wilson ratio RW=4Ks remains almost temperature independent, where Ks is the Luttinger parameter. Furthermore, by applying our results, we precisely determine the quantum scalings and critical exponents of all magnetic properties in the ideal 1D spin-1/2 antiferromagnet Cu(C4H4N2)(NO3)2, recently studied by Kono et al. [Phys. Rev. Lett. 114, 037202 (2015)PRLTAO0031-900710.1103/PhysRevLett.114.037202]. We further find that the magnetization maximum used in experiments is not a good quantity to map out the finite-temperature TLL phase boundary.en_AU
dc.format.mimetypeapplication/pdfen_AU
dc.identifier.issn1098-0121en_AU
dc.identifier.urihttp://hdl.handle.net/1885/247425
dc.language.isoen_AUen_AU
dc.provenancehttps://v2.sherpa.ac.uk/id/publication/13635..."published version can be made open access in institutional repository" from SHERPA/RoMEO site (as at 8/09/21).en_AU
dc.publisherAmerican Physical Societyen_AU
dc.rights©2017 American Physical Societyen_AU
dc.sourcePhysical Review B: Condensed Matter and Materialsen_AU
dc.titleQuantum criticality of spinonsen_AU
dc.typeJournal articleen_AU
dcterms.accessRightsOpen Accessen_AU
local.bibliographicCitation.issue22en_AU
local.contributor.affiliationHe, Feng, Chinese Academy of Sciencesen_AU
local.contributor.affiliationJiang, Yuzhu, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciencesen_AU
local.contributor.affiliationYu, Yi-Cong, Chinese Academy of Sciencesen_AU
local.contributor.affiliationLin, H.-Q., Beijing Computational Science Research Centeren_AU
local.contributor.affiliationGuan, Xi-Wen, College of Science, ANUen_AU
local.contributor.authoremailu4054868@anu.edu.auen_AU
local.contributor.authoruidGuan, Xi-Wen, u4054868en_AU
local.description.notesImported from ARIESen_AU
local.identifier.absfor020699 - Quantum Physics not elsewhere classifieden_AU
local.identifier.ariespublicationa383154xPUB9900en_AU
local.identifier.citationvolume96en_AU
local.identifier.doi10.1103/PhysRevB.96.220401en_AU
local.identifier.scopusID2-s2.0-85039437492
local.identifier.uidSubmittedBya383154en_AU
local.publisher.urlhttp://www.aps.org/en_AU
local.type.statusPublished Versionen_AU

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