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DOI http://dx.doi.org/10.1103/PhysRevB.53.86
Title Overdoped regime of the high-{ital T}{sub{ital c}} superconductor HgBa{sub 2}CuO{sub 4+{delta}} and the relation between normal and superconducting carrier densities
Creator/Author Puzniak, R. ; Usami, R. ; Yamauchi, H. [Superconductivity Research Laboratory, International Superconductivity Technology Center, 10-13 Shinonome 1-chome, Koto-ku, Tokyo 135 (Japan)]
Publication Date1996 Jan 01
OSTI IdentifierOSTI ID: 434501
Other Number(s)PRBMDO; ISSN 0163-1829
Resource TypeJournal Article
Resource RelationPhysical Review, B: Condensed Matter ; VOL. 53 ; ISSUE: 1 ; PBD: Jan 1996
Subject66 PHYSICS ; BARIUM OXIDES; CRYSTAL DOPING; CUPRATES; HIGH-TC SUPERCONDUCTORS; MERCURY OXIDES; CARRIER DENSITY; ELECTRIC CONDUCTIVITY; TYPE-II SUPERCONDUCTORS
Description/Abstract We have determined the{ital ab}-plane and{ital c}-axis components of penetration depth,{lambda}{sub{ital ab}} and{lambda}{sub{ital c}}, and coherence length,{xi}{sub{ital ab}} and{xi}{sub{ital c}}, for optimally doped ({ital T}{sub{ital c}}=96 K) and overdoped HgBa{sub 2}CuO{sub 4+{delta}} ({ital T}{sub{ital c}}=52 K).{xi}{sub{ital ab}},{xi}{sub{ital c}}, and{lambda}{sub{ital ab}} increase, whereas{lambda}{sub{ital c}} decreases for the overdoped material in comparison to the optimally doped materials. Analysis of the data reveals that the increase of{lambda}{sub{ital ab}} is caused by a suppression of the superconducting carrier density{ital n}{sub{ital s}}, and not an enhancement of the in-plane effective mass. The decrease of{lambda}{sub{ital c}} originates from an overcompensation in the suppression of{ital n}{sub{ital s}} by a strongly reduced effective mass along the{ital c} axis.{copyright}{ital 1996 The American Physical Society.}
Country of PublicationUnited States
LanguageEnglish
Formatpp. 86-89 ; PL:
System Entry Date2001 May 05

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