NO FAR-INFRARED-SPECTROSCOPIC GAP IN CLEAN AND DIRTY HIGH-TC SUPERCONDUCTORS

被引：32

作者：

MANDRUS, D

MARTIN, MC

KENDZIORA, C

KOLLER, D

FORRO, L

MIHALY, L

机构：

[1] ECOLE POLYTECH FED LAUSANNE, DEPT PHYS, CH-1015 LAUSANNE, SWITZERLAND

[2] UNIV ZAGREB, INST PHYS, 41001 ZAGREB, CROATIA

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 70卷 / 17期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.70.2629

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report far-infrared transmission measurements on single crystal samples derived from Bi2Sr2CaCu2O8. The impurity scattering rate of the samples was varied by electron-beam irradiation, 50 MeV O-16(+6) ion irradiation, heat treatment in vacuum, and Y doping. Although substantial changes in the infrared spectra were produced, in no case was a feature observed that could be associated with the superconducting energy gap. These results all but rule out ''clean limit'' explanations for the absence of the spectroscopic gap in this material, and provide evidence that the superconductivity in Bi2Sr2CaCu2O8 is gapless.

引用

页码：2629 / 2632

页数：4

共 28 条

[1] SUPERCONDUCTING GAP IN BI2SR2CACU2O8
BRUNEL, LC
LOUIE, SG
MARTINEZ, G
LABDI, S
RAFFY, H
[J]. PHYSICAL REVIEW LETTERS, 1991, 66 (10) : 1346 - 1349
[2] ANALYSIS OF NMR DATA IN THE SUPERCONDUCTING STATE OF YBA2CU3O7
BULUT, N
SCALAPINO, DJ
[J]. PHYSICAL REVIEW LETTERS, 1992, 68 (05) : 706 - 709
[3] ANOMALOUS SPECTRAL WEIGHT TRANSFER AT THE SUPERCONDUCTING TRANSITION OF BI2SR2CACU2O8+DELTA
DESSAU, DS
WELLS, BO
SHEN, ZX
SPICER, WE
ARKO, AJ
LIST, RS
MITZI, DB
KAPITULNIK, A
[J]. PHYSICAL REVIEW LETTERS, 1991, 66 (16) : 2160 - 2163
[4] PREPARATION AND CHARACTERIZATION OF ULTRATHIN BI2SR2CACU2O8 SINGLE-CRYSTALS
FORRO, L
MANDRUS, D
KESZEI, B
MIHALY, L
REEDER, R
[J]. JOURNAL OF APPLIED PHYSICS, 1990, 68 (09) : 4876 - 4878
[5] FAR-INFRARED TRANSMISSION STUDY OF SINGLE-CRYSTAL BI2SR2CA1CU2OX SUPERCONDUCTORS
FORRO, L
CARR, GL
WILLIAMS, GP
MANDRUS, D
MIHALY, L
[J]. PHYSICAL REVIEW LETTERS, 1990, 65 (15) : 1941 - 1944
[6] CONDUCTIVITY OF SUPERCONDUCTING FILMS FOR PHOTON ENERGIES BETWEEN 0.3 AND 40K-TC
GLOVER, RE
TINKHAM, M
[J]. PHYSICAL REVIEW, 1957, 108 (02): : 243 - 256
[7] HARDY WN, IN PRESS
[8] HUGHES RA, 1990, PHYS REV B, V40, P5162
[9] ELECTRONIC-SPECTRUM OF THE HIGH-TEMPERATURE SUPERCONDUCTING STATE
HWU, Y
LOZZI, L
MARSI, M
LAROSA, S
WINOKUR, M
DAVIS, P
ONELLION, M
BERGER, H
GOZZO, F
LEVY, F
MARGARITONDO, G
[J]. PHYSICAL REVIEW LETTERS, 1991, 67 (18) : 2573 - 2576
[10] IN A CLEAN HIGH-TC SUPERCONDUCTOR YOU DO NOT SEE THE GAP
KAMARAS, K
HERR, SL
PORTER, CD
TACHE, N
TANNER, DB
ETEMAD, S
VENKATESAN, T
CHASE, E
INAM, A
WU, XD
HEGDE, MS
DUTTA, B
[J]. PHYSICAL REVIEW LETTERS, 1990, 64 (01) : 84 - 87

← 1 2 3 →