DEPENDENCE OF THE OXYGEN ISOTOPE EFFECT UPON HOLE DENSITY IN BI2SR2CA1-XYXCU2O8+DELTA AND Y1-XCAXBA2CU4O8

被引：42

作者：

BORNEMANN, HJ ^{[1
]}

MORRIS, DE ^{[1
]}

LIU, HB ^{[1
]}

NARWANKAR, PK ^{[1
]}

机构：

[1] UNIV CALIF BERKELEY,DEPT MAT SCI & MINERAL ENGN,BERKELEY,CA 94720

来源：

PHYSICA C | 1992年 / 191卷 / 1-2期

关键词：

D O I：

10.1016/0921-4534(92)90650-2

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have investigated the dependence of the oxygen isotope effect on the hole density in the high-T(c) cuprates Bi2Sr2CaCu2O8 and YBa2Cu4O8. The hole density n was varied by partial replacement of Ca by Y (hole acceptor) in Bi2Sr2CaCu2O8, and by partial replacement of Y by Ca (hole donor) in YBa2Cu4O8. In both cases the dopant was introduced into the eightfold coordinated site between the two CuO2 sheets. The hole concentration could be varied to reach maximum T(c) and upon further doping T(c) decreased. The oxygen isotope effect alpha(0) was found to be strongly correlated to n and T(c). When n is optimized to give maximum T(c), alpha(0) is very small, close to zero and alpha(0) increases rapidly when n is either less than or greater than the optimum.

引用

页码：211 / 218

页数：8

共 40 条

[1] THEORY OF SUPERCONDUCTIVITY
BARDEEN, J
COOPER, LN
SCHRIEFFER, JR
[J]. PHYSICAL REVIEW, 1957, 108 (05): : 1175 - 1204
[2] MICROSCOPIC THEORY OF SUPERCONDUCTIVITY
BARDEEN, J
COOPER, LN
SCHRIEFFER, JR
[J]. PHYSICAL REVIEW, 1957, 106 (01): : 162 - 164
[3] NONZERO ISOTOPE EFFECT IN LA1.85SR0.15CUO4
BATLOGG, B
KOUROUKLIS, G
WEBER, W
CAVA, RJ
JAYARAMAN, A
WHITE, AE
SHORT, KT
RUPP, LW
RIETMAN, EA
[J]. PHYSICAL REVIEW LETTERS, 1987, 59 (08) : 912 - 914
[4] ISOTOPE EFFECT IN YBA2-XLAXCU3OZ - EVIDENCE FOR PHONON-MEDIATED HIGH-TEMPERATURE SUPERCONDUCTIVITY
BORNEMANN, HJ
MORRIS, DE
[J]. PHYSICAL REVIEW B, 1991, 44 (10): : 5322 - 5325
[5] SEARCH FOR ISOTOPE EFFECT IN SUPERCONDUCTING Y-BA-CU-O
BOURNE, LC
CROMMIE, MF
ZETTL, A
LOYE, HCZ
KELLER, SW
LEARY, KL
STACY, AM
CHANG, KJ
COHEN, ML
MORRIS, DE
[J]. PHYSICAL REVIEW LETTERS, 1987, 58 (22) : 2337 - 2339
[6] CAVA RJ, 1989, NATURE, V338, P329
[7] OXYGEN ISOTOPE EFFECT AND STRUCTURAL PHASE-TRANSITIONS IN LA2CUO4-BASED SUPERCONDUCTORS
CRAWFORD, MK
FARNETH, WE
MCCARRON, EM
HARLOW, RL
MOUDDEN, AH
[J]. SCIENCE, 1990, 250 (4986) : 1390 - 1394
[8] ANOMALOUS OXYGEN ISOTOPE EFFECT IN LA2-XSRXCUO4
CRAWFORD, MK
KUNCHUR, MN
FARNETH, WE
MCCARRON, EM
POON, SJ
[J]. PHYSICAL REVIEW B, 1990, 41 (01): : 282 - 287
[9] ANHARMONIC PHONONS AND THE ISOTOPE EFFECT IN SUPERCONDUCTIVITY
CRESPI, VH
COHEN, ML
PENN, DR
[J]. PHYSICAL REVIEW B, 1991, 43 (16): : 12921 - 12924
[10] OBSERVATION OF AN OXYGEN ISOTOPE EFFECT IN SUPERCONDUCTING (Y1-XPRX)BA2CU3O7-DELTA
FRANCK, JP
JUNG, J
MOHAMED, MAK
GYGAX, S
SPROULE, GI
[J]. PHYSICAL REVIEW B, 1991, 44 (10): : 5318 - 5321

← 1 2 3 4 →