Change search
ReferencesLink to record
Permanent link

Direct link
Unusual superconducting isotope effect in the presence of a quantum criticality
KTH, Centres, Nordic Institute for Theoretical Physics NORDITA.
KTH, Centres, Nordic Institute for Theoretical Physics NORDITA.
2016 (English)In: PHYSICAL REVIEW B, ISSN 2469-9950, Vol. 93, no 18, 184507Article in journal (Refereed) PublishedText
Abstract [en]

The isotope effect in superconductivity (SC) is used to make a concrete connection to a quantum critical point (QCP) that is tunable by isotopic mass substitution. We find a distinct contribution to the isotope exponent in SC and derive an explicit relation to the critical exponent of a QCP. The relation between the two exponents is general and can be used as an experimental signature for the connection between SC and a QCP. We demonstrate it in a scenario where the SC pairing is due to modes related to a structural instability. Within this model the isotope exponent is derived in terms of microscopic parameters.

Place, publisher, year, edition, pages
American Physical Society , 2016. Vol. 93, no 18, 184507
National Category
Condensed Matter Physics
URN: urn:nbn:se:kth:diva-188730DOI: 10.1103/PhysRevB.93.184507ISI: 000376635900006ScopusID: 2-s2.0-84970951890OAI: diva2:939695

QC 20160620

Available from: 2016-06-20 Created: 2016-06-17 Last updated: 2016-06-20Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Kedem, YaronBalatsky, Alexander V.
By organisation
Nordic Institute for Theoretical Physics NORDITA
Condensed Matter Physics

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 2 hits
ReferencesLink to record
Permanent link

Direct link