Infrared probe of transition from superconductor to nonmetal in YBa2(Cu1-xZnx)4O8

被引：106

作者：

Basov, DN ^{[1
]}

Dabrowski, B

Timusk, T

机构：

[1] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA

[2] No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA

[3] McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.81.2132

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on a study of the optical conductivity of single crystals of the high-T-c superconductor YBa2Cu4O8; in which superconductivity is suppressed by random substitution of Cu with Zn. The a-axis infrared spectrum, which is a direct measure of the charge dynamics in the CuO2 planes, is dominated by a bound state at approximate to 120 cm(-1). This indicates that the low-energy electronic stales are on the verge of localization driven by the Zn impurities.

引用

页码：2132 / 2135

页数：4

共 38 条

[1] INTERACTION EFFECTS IN DISORDERED FERMI SYSTEMS IN 2 DIMENSIONS
ALTSHULER, BL
ARONOV, AG
LEE, PA
[J]. PHYSICAL REVIEW LETTERS, 1980, 44 (19) : 1288 - 1291
[2] DISORDER AND SUPERCONDUCTING-STATE CONDUCTIVITY OF SINGLE-CRYSTALS OF YBA2CU3O6.95
BASOV, DN
PUCHKOV, AV
HUGHES, RA
STRACH, T
PRESTON, J
TIMUSK, T
BONN, DA
LIANG, R
HARDY, WN
[J]. PHYSICAL REVIEW B, 1994, 49 (17): : 12165 - 12169
[3] INPLANE ANISOTROPY OF THE PENETRATION DEPTH IN YBA2CU3O7-X AND YBA2CU4O8 SUPERCONDUCTORS
BASOV, DN
LIANG, R
BONN, DA
HARDY, WN
DABROWSKI, B
QUIJADA, H
TANNER, DB
RICE, JP
GINSBERG, DM
TIMUSK, T
[J]. PHYSICAL REVIEW LETTERS, 1995, 74 (04) : 598 - 601
[4] Pseudogap and charge dynamics in CuO2 planes in YBCO
Basov, DN
Liang, R
Dabrowski, B
Bonn, DA
Hardy, WN
Timusk, T
[J]. PHYSICAL REVIEW LETTERS, 1996, 77 (19) : 4090 - 4093
[5] BRANCH D, 1997, THESIS MCMASTER U
[6] IMPORTANCE OF PHASE FLUCTUATIONS IN SUPERCONDUCTORS WITH SMALL SUPERFLUID DENSITY
EMERY, VJ
KIVELSON, SA
[J]. NATURE, 1995, 374 (6521) : 434 - 437
[7] SUPERCONDUCTIVITY IN BAD METALS
EMERY, VJ
KIVELSON, SA
[J]. PHYSICAL REVIEW LETTERS, 1995, 74 (16) : 3253 - 3256
[8] Critical temperature and superfluid density suppression in disordered high-T-c cuprate superconductors
Franz, M
Kallin, C
Berlinsky, AJ
Salkola, MI
[J]. PHYSICAL REVIEW B, 1997, 56 (13): : 7882 - 7885
[9] Universal superconductor-insulator transition and T-c depression in Zn-substituted high-T-c cuprates in the underdoped regime
Fukuzumi, Y
Mizuhashi, K
Takenaka, K
Uchida, S
[J]. PHYSICAL REVIEW LETTERS, 1996, 76 (04) : 684 - 687
[10] FREQUENCY-DEPENDENT CONDUCTIVITY OF A STRONGLY DISORDERED TWO-DIMENSIONAL ELECTRON-GAS
GOLD, A
ALLEN, SJ
WILSON, BA
TSUI, DC
[J]. PHYSICAL REVIEW B, 1982, 25 (06): : 3519 - 3528

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