The Library
Temperature and field dependence of the intrinsic tunnelling structure in overdoped Bi2Sr2CaCu2O8+δ
Tools
Benseman, T. M., Cooper, J. R. and Balakrishnan, Geetha (2018) Temperature and field dependence of the intrinsic tunnelling structure in overdoped Bi2Sr2CaCu2O8+δ. Physical Review B (Condensed Matter and Materials Physics), 98 (1). 014507. doi:10.1103/PhysRevB.98.014507 ISSN 1098-0121.
|
PDF
WRAP-temperature-field-dependence-intrinsic-tunnelling-structure-overdoped-Balakrishnan-2018.pdf - Accepted Version - Requires a PDF viewer. Download (2932Kb) | Preview |
Official URL: http://dx.doi.org/10.1103/PhysRevB.98.014507
Abstract
We report intrinsic tunneling data for mesa structures fabricated on three over- and optimally-doped Bi2.15Sr1.85CaCu2O8+δ crystals with transition temperatures of 86–78 K and 0.16–0.19 holes per CuO2 unit, for a wide range of temperature (T) and applied magnetic field (H), primarily focusing on one overdoped crystal (OD80). The differential conductance above the gap edge shows a clear dip structure which is highly suggestive of strong coupling to a narrow boson mode. Data below the gap edge suggest that tunnelling is weaker near the nodes of the d-wave gap and give clear evidence for strong T-dependent pair breaking. These findings could help theorists make a detailed Eliashberg analysis and thereby contribute towards understanding the pairing mechanism. We show that for our OD80 crystal the gap above Tc, although large, is reasonably consistent with the theory of superconducting fluctuations.
Item Type: | Journal Article | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Subjects: | Q Science > QC Physics | |||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | |||||||||
Library of Congress Subject Headings (LCSH): | Superconductors, Scanning tunneling microscopy, Photoemission | |||||||||
Journal or Publication Title: | Physical Review B (Condensed Matter and Materials Physics) | |||||||||
Publisher: | American Physical Society | |||||||||
ISSN: | 1098-0121 | |||||||||
Official Date: | 12 July 2018 | |||||||||
Dates: |
|
|||||||||
Volume: | 98 | |||||||||
Number: | 1 | |||||||||
Article Number: | 014507 | |||||||||
DOI: | 10.1103/PhysRevB.98.014507 | |||||||||
Status: | Peer Reviewed | |||||||||
Publication Status: | Published | |||||||||
Access rights to Published version: | Restricted or Subscription Access | |||||||||
Date of first compliant deposit: | 19 July 2018 | |||||||||
Date of first compliant Open Access: | 20 July 2018 | |||||||||
RIOXX Funder/Project Grant: |
|
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |
Downloads
Downloads per month over past year