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Title: Overdoped metals in the Tl[sub 2]Ba[sub 2]CuO[sub 6+[delta]] and TlSr[sub 2]CaCu[sub 2]O[sub 7[minus][delta]] systems

Abstract

We have synthesized overdoped metallic samples of Tl[sub 2]Ba[sub 2]CuO[sub 6+[delta]] and TlSr[sub 2]CaCu[sub 2]O[sub 7[minus][delta]] beyond the superconductor-metal phase boundary by annealing the samples in high-pressure oxygen. Oxygen incorporation is clearly demonstrated by structural refinements of neutron powder-diffraction data and reversible changes in sample weight. The same [similar to][ital T][sup 2] scattering mechanism in transport properties as previously observed in superconducting samples is observed in the present overdoped metallic samples. Hall coefficients do not change sign and are still positive for the overdoped metals. Although the crystal structures of both compounds change gradually and continuously with oxygen doping beyond the superconductor-metal phase boundary, the electronic structure of the further overdoped metals'' might still be near the supeconductor-metal phase boundary.

Authors:
 [1];  [2]; ;  [3]
  1. Materials Science Division and Science and Technology Center for Superconductivity, Argonne National Laboratory, Argonne, Illinois 60439 (United States) Fundamental Research Laboratories, NEC Corporation, 34 Miyukigaoka, Tsukuba 305 (Japan)
  2. Materials Science Division and Science and Technology Center for Superconductivity, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
  3. Fundamental Research Laboratories, NEC Corporation, 34 Miyukigaoka, Tsukuba 305 (Japan)
Publication Date:
OSTI Identifier:
7093864
DOE Contract Number:  
W-31-109-ENG-38
Resource Type:
Journal Article
Journal Name:
Physical Review, B: Condensed Matter; (United States)
Additional Journal Information:
Journal Volume: 50:21; Journal ID: ISSN 0163-1829
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; HIGH-TC SUPERCONDUCTORS; HALL EFFECT; ANNEALING; BARIUM OXIDES; CALCIUM OXIDES; COPPER OXIDES; CRYSTAL STRUCTURE; DOPED MATERIALS; ELECTRONIC STRUCTURE; OXYGEN; QUATERNARY ALLOY SYSTEMS; STRONTIUM OXIDES; TEMPERATURE DEPENDENCE; THALLIUM OXIDES; ALKALINE EARTH METAL COMPOUNDS; ALLOY SYSTEMS; BARIUM COMPOUNDS; CALCIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; ELEMENTS; HEAT TREATMENTS; MATERIALS; NONMETALS; OXIDES; OXYGEN COMPOUNDS; STRONTIUM COMPOUNDS; SUPERCONDUCTORS; THALLIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; 665411* - Basic Superconductivity Studies- (1992-)

Citation Formats

Shimakawa, Y, Jorgensen, J D, Manako, T, and Kubo, Y. Overdoped metals in the Tl[sub 2]Ba[sub 2]CuO[sub 6+[delta]] and TlSr[sub 2]CaCu[sub 2]O[sub 7[minus][delta]] systems. United States: N. p., 1994. Web. doi:10.1103/PhysRevB.50.16033.
Shimakawa, Y, Jorgensen, J D, Manako, T, & Kubo, Y. Overdoped metals in the Tl[sub 2]Ba[sub 2]CuO[sub 6+[delta]] and TlSr[sub 2]CaCu[sub 2]O[sub 7[minus][delta]] systems. United States. https://doi.org/10.1103/PhysRevB.50.16033
Shimakawa, Y, Jorgensen, J D, Manako, T, and Kubo, Y. 1994. "Overdoped metals in the Tl[sub 2]Ba[sub 2]CuO[sub 6+[delta]] and TlSr[sub 2]CaCu[sub 2]O[sub 7[minus][delta]] systems". United States. https://doi.org/10.1103/PhysRevB.50.16033.
@article{osti_7093864,
title = {Overdoped metals in the Tl[sub 2]Ba[sub 2]CuO[sub 6+[delta]] and TlSr[sub 2]CaCu[sub 2]O[sub 7[minus][delta]] systems},
author = {Shimakawa, Y and Jorgensen, J D and Manako, T and Kubo, Y},
abstractNote = {We have synthesized overdoped metallic samples of Tl[sub 2]Ba[sub 2]CuO[sub 6+[delta]] and TlSr[sub 2]CaCu[sub 2]O[sub 7[minus][delta]] beyond the superconductor-metal phase boundary by annealing the samples in high-pressure oxygen. Oxygen incorporation is clearly demonstrated by structural refinements of neutron powder-diffraction data and reversible changes in sample weight. The same [similar to][ital T][sup 2] scattering mechanism in transport properties as previously observed in superconducting samples is observed in the present overdoped metallic samples. Hall coefficients do not change sign and are still positive for the overdoped metals. Although the crystal structures of both compounds change gradually and continuously with oxygen doping beyond the superconductor-metal phase boundary, the electronic structure of the further overdoped metals'' might still be near the supeconductor-metal phase boundary.},
doi = {10.1103/PhysRevB.50.16033},
url = {https://www.osti.gov/biblio/7093864}, journal = {Physical Review, B: Condensed Matter; (United States)},
issn = {0163-1829},
number = ,
volume = 50:21,
place = {United States},
year = {1994},
month = {12}
}