English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
 
 
DownloadE-Mail
  Single-Gap Superconductivity and Dome of Superfluid Density in Nb-Doped SrTiO3

Thiemann, M., Beutel, M. M., Dressel, M., Lee-Hone, N. R., Broun, D. M., Fillis-Tsirakis, E., et al. (2018). Single-Gap Superconductivity and Dome of Superfluid Density in Nb-Doped SrTiO3. Physical Review Letters, 120(23): 237002.

Item is

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Thiemann, M., Author
Beutel, M. M., Author
Dressel, M., Author
Lee-Hone, N. R., Author
Broun, D. M., Author
Fillis-Tsirakis, E., Author
Boschker, H., Author
Mannhart, J.1, Author           
Scheffler, M., Author
Affiliations:
1Department Solid State Quantum Electronics (Jochen Mannhart), Max Planck Institute for Solid State Research, Max Planck Society, ou_3370485              

Content

show
hide
Free keywords: -
 Abstract: SrTiO3 exhibits a superconducting dome upon doping with Nb, with a maximum critical temperature T-c approximate to 0.4 K. Using microwave stripline resonators at frequencies from 2 to 23 GHz and temperatures down to 0.02 K, we probe the low-energy optical response of superconducting SrTiO3 with a charge carrier concentration from 0.3 to 2.2 x 10(20) cm(-3), covering the majority of the superconducting dome. We find single-gap electrodynamics even though several electronic bands are superconducting. This is explained by a single energy gap 2 Delta due to gap homogenization over the Fermi surface consistent with the low level of defect scattering in Nb-doped SrTiO3. Furthermore, we determine T-c, 2 Delta, and the superfluid density as a function of charge carrier concentration, and all three quantities exhibit the characteristic dome shape.

Details

show
hide
Language(s): eng - English
 Dates: 2018
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 744639
ISI: 000434633000014
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Physical Review Letters
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: COLLEGE PK : AMER PHYSICAL SOC
Pages: - Volume / Issue: 120 (23) Sequence Number: 237002 Start / End Page: - Identifier: ISSN: 0031-9007