Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • 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
Fluctuation-driven topological Hund insulators
Stockholm University, Faculty of Science, Department of Physics.
Number of Authors: 32013 (English)In: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 87, no 23, article id 235104Article in journal (Refereed) Published
Abstract [en]

We investigate the role of electron-electron interaction in a two-band Hubbard model based on the Bernevig-Hughes-Zhang Hamiltonian exhibiting the quantum spin Hall (QSH) effect. By means of dynamical mean-field theory, we find that a system with topologically trivial noninteracting parameters can be driven into a QSH phase at finite interaction strength by virtue of local dynamical fluctuations. For very strong interaction, the system reenters a trivial insulating phase by going through a Mott transition. We obtain the phase diagram of our model by direct calculation of the bulk topological invariant of the interacting system in terms of its single-particle Green's function.

Place, publisher, year, edition, pages
2013. Vol. 87, no 23, article id 235104
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-161698DOI: 10.1103/PhysRevB.87.235104ISI: 000319912700001OAI: oai:DiVA.org:su-161698DiVA, id: diva2:1261143
Available from: 2018-11-06 Created: 2018-11-06 Last updated: 2018-11-06Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full text

Search in DiVA

By author/editor
Trauzettel, BjörnSangiovanni, Giorgio
By organisation
Department of Physics
In the same journal
Physical Review B
Physical Sciences

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 13 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • 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