Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 7-Day Trial for You or Your Team.

Learn More →

Normal-state magnetotransport in superconducting Tl 2 Ba 2 CuO 6 + δ to millikelvin temperatures

Normal-state magnetotransport in superconducting Tl 2 Ba 2 CuO 6 + δ to millikelvin temperatures We report a study of the normal-state Hall effect and magnetoresistance of single crystals of Tl 2 Ba 2 CuO 6 + δ . Using samples with T c <15 K, we can suppress the superconductivity down to low temperatures with magnetic fields of 16 T, and can thus study the normal state properties over three decades of temperature, extending into the T →0 limit where it is possible to make a reliable estimate of k F ∼0.7 A ̊ - 1 from the Hall effect in the elastic-scattering regime. The temperature dependence of the Hall coefficient, R H , below 30 K rules out models in which R H ( T ) is taken as a measure of a real temperature-dependent change in the carrier concentration. The two scattering rates (probed by the resistivity and the cotangent of the Hall angle) which characterize normal-state transport in the cuprates also appear in this overdoped material for T ≥30 K. However, as T →0, we observe only a single scattering rate, whose temperature dependence is dominated by low power terms, in contrast to the T 2 dependence predicted for a Fermi liquid. The relationship between these findings and anomalous behavior previously reported for the upper critical field is discussed. © 1996 The American Physical Society. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review B American Physical Society (APS)

Normal-state magnetotransport in superconducting Tl 2 Ba 2 CuO 6 + δ to millikelvin temperatures

Mackenzie, A. P
Physical Review B , Volume 53 (9) – Mar 1, 1996
Download PDF
8 pages

Loading next page...
 
/lp/american-physical-society-aps/normal-state-magnetotransport-in-superconducting-tl-2-ba-2-cuo-6-to-WeaS3uNCjq

References

References for this paper are not available at this time. We will be adding them shortly, thank you for your patience.

Publisher
American Physical Society (APS)
Copyright
Copyright © 1996 The American Physical Society
ISSN
1095-3795
DOI
10.1103/PhysRevB.53.5848
Publisher site
See Article on Publisher Site

Abstract

We report a study of the normal-state Hall effect and magnetoresistance of single crystals of Tl 2 Ba 2 CuO 6 + δ . Using samples with T c <15 K, we can suppress the superconductivity down to low temperatures with magnetic fields of 16 T, and can thus study the normal state properties over three decades of temperature, extending into the T →0 limit where it is possible to make a reliable estimate of k F ∼0.7 A ̊ - 1 from the Hall effect in the elastic-scattering regime. The temperature dependence of the Hall coefficient, R H , below 30 K rules out models in which R H ( T ) is taken as a measure of a real temperature-dependent change in the carrier concentration. The two scattering rates (probed by the resistivity and the cotangent of the Hall angle) which characterize normal-state transport in the cuprates also appear in this overdoped material for T ≥30 K. However, as T →0, we observe only a single scattering rate, whose temperature dependence is dominated by low power terms, in contrast to the T 2 dependence predicted for a Fermi liquid. The relationship between these findings and anomalous behavior previously reported for the upper critical field is discussed. © 1996 The American Physical Society.

Journal

Physical Review B – American Physical Society (APS)

Published: Mar 1, 1996

There are no references for this article.