English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Thermodynamic evidence for a two-component superconducting order parameter in Sr2RuO4

Ghosh, S., Shekhter, A., Jerzembeck, F., Kikugawa, N., Sokolov, D. A., Brando, M., et al. (2020). Thermodynamic evidence for a two-component superconducting order parameter in Sr2RuO4. Nature Physics. doi:10.1038/s41567-020-1032-4.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/21.11116/0000-0007-0F0D-C Version Permalink: http://hdl.handle.net/21.11116/0000-0007-1A98-1
Genre: Journal Article

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Ghosh, Sayak1, Author
Shekhter, Arkady1, Author
Jerzembeck, F.2, Author              
Kikugawa, N.1, Author
Sokolov, Dmitry A.2, Author              
Brando, Manuel3, Author              
Mackenzie, A. P.4, Author              
Hicks, Clifford W.5, Author              
Ramshaw, B. J.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              
3Manuel Brando, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863469              
4Andrew Mackenzie, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863463              
5Clifford Hicks, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863466              

Content

show
hide
Free keywords: -
 Abstract: Sr2RuO4 has stood as the leading candidate for a spin-triplet superconductor for 26 years1. However, recent NMR experiments have cast doubt on this candidacy2,3 and it is difficult to find a theory of superconductivity that is consistent with all experiments. The order parameter symmetry for this material therefore remains an open question. Symmetry-based experiments are needed that can rule out broad classes of possible superconducting order parameters. Here, we use resonant ultrasound spectroscopy to measure the entire symmetry-resolved elastic tensor of Sr2RuO4 through the superconducting transition. We observe a thermodynamic discontinuity in the shear elastic modulus c66, which implies that the superconducting order parameter has two components. A two-component p-wave order parameter, such as px + ipy, naturally satisfies this requirement. As this order parameter appears to have been precluded by recent NMR experiments, we suggest that two other two-component order parameters, namely $$\{{d}_{xz},{d}_{yz}\}$${dxz,dyz} and $$\{{d}_{{x}^{2}-{y}^{2}},{g}_{xy({x}^{2}-{y}^{2})}\}$${dx2−y2,gxy(x2−y2)}, are now the prime candidates for the order parameter of Sr2RuO4.

Details

show
hide
Language(s): eng - English
 Dates: 2020-09-212020-09-21
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1038/s41567-020-1032-4
Other: Ghosh2020
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Nature Physics
  Other : Nat. Phys.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: London : Nature Pub. Group
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: - Identifier: ISSN: 1745-2473
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000025850