Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Topological quantum phase transition in the Ising-like antiferromagnetic spin chain BaCo2V2O8
Univ Grenoble Alpes, CEA, INAC MEM, Grenoble, France.;Univ Grenoble Alpes, Inst NEEL, Grenoble, France..
Univ Geneva, Dept Quantum Matter Phys, Geneva, Switzerland..
Univ Paris Saclay, CNRS, CEA, CE Saclay,Lab Leon Brillouin, Gif Sur Yvette, France..
Univ Grenoble Alpes, Inst NEEL, Grenoble, France..
Show others and affiliations
2018 (English)In: Nature Physics, ISSN 1745-2473, E-ISSN 1745-2481, Vol. 14, no 7, p. 716-722Article in journal (Refereed) Published
Abstract [en]

Since the seminal ideas of Berezinskii, Kosterlitz and Thouless, topological excitations have been at the heart of our understanding of a whole novel class of phase transitions. In most cases, those transitions are controlled by a single type of topological objects. There are, however, some situations, still poorly understood, where two dual topological excitations fight to control the phase diagram and the transition. Finding experimental realizations of such cases is thus of considerable interest. We show here that this situation occurs in BaCo2V2O8, a spin-1/2 Ising-like quasi-one-dimensional antiferromagnet, when subjected to a uniform magnetic field transverse to the Ising axis. Using neutron scattering experiments, we measure a drastic modification of the quantum excitations beyond a critical value of the magnetic field. This quantum phase transition is identified, through a comparison with theoretical calculations, to be a transition between two different types of solitonic topological object, which are captured by different components of the dynamical structure factor.

Place, publisher, year, edition, pages
Nature Publishing Group, 2018. Vol. 14, no 7, p. 716-722
National Category
Other Physics Topics
Identifiers
URN: urn:nbn:se:kth:diva-232625DOI: 10.1038/s41567-018-0126-8ISI: 000438253600023Scopus ID: 2-s2.0-85046531182OAI: oai:DiVA.org:kth-232625DiVA, id: diva2:1235984
Funder
Swedish Research Council, 2016-06955
Note

QC 20180730

Available from: 2018-07-30 Created: 2018-07-30 Last updated: 2018-07-30Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus

Authority records BETA

Månsson, Martin

Search in DiVA

By author/editor
Månsson, Martin
By organisation
Material Physics, MF
In the same journal
Nature Physics
Other Physics Topics

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 135 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf