Pressure-induced superconductivity in tetragonal NdBa2Cu3O6+x

被引：1

作者：

Fita, IM ^{[1
]}

Dyakonov, VP ^{[1
]}

Baran, M ^{[1
]}

Szymczak, G ^{[1
]}

机构：

[1] POLISH ACAD SCI,INST PHYS,PL-02668 WARSAW,POLAND

来源：

PHYSICS OF THE SOLID STATE | 1997年 / 39卷 / 08期

关键词：

D O I：

10.1134/1.1130114

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The appearance of superconductivity and relaxation of the transition temperature to its equilibrium value T-c approximate to 30 K over the course of five days have been observed in a tetragonal sample of NdBa2Cu3O6.67 under 1 GPa pressure. The time dependence T-c(t) correlates with a decrease of the room-temperature electrical resistance R(t). The superconducting phase disappears 1.3 h after the pressure is removed. This behavior is explained by a redistribution of charge as a result of pressure-induced oxygen reordering in the CuOx planes. A large effect of oxygen ordering on the transition temperature under pressure has been observed near the metal-insulator transition (the largest of all those measured in the 1-2-3 system), along with a nonlinear temperature dependence of T-c. (C) 1997 American Institute of Physics.

引用

页码：1178 / 1183

页数：6

共 23 条

[1]

Baran M., 1996, Physics of the Solid State, V38, P1101

[2] TIME-DEPENDENT OXYGEN ORDERING AND ITS EFFECT ON TC IN OFF-STOICHIOMETRIC YBA2CU3OZ [J].

CEDER, G ;

MCCORMACK, R ;

DEFONTAINE, D .

PHYSICAL REVIEW B, 1991, 44 (05) :2377-2380

[3] ATOMIC SHORT-RANGE ORDER IN OXYGEN DEFICIENT YBA2CU3O7-DELTA [J].

CLAUS, H ;

YANG, S ;

PAULIKAS, AP ;

DOWNEY, JW ;

VEAL, BW .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 1990, 171 (3-4) :205-210

[4]

D'yakonov V. P., 1996, Physics of the Solid State, V38, P458

[5] Effect of potential relief on superconductivity revealed by time variations in Y-Ba-Cu-O superconductor properties under illumination [J].

Eremenko, VV ;

Kachur, IS ;

Piryatinskaya, VG ;

Ratner, AM ;

Shapiro, VV .

PHYSICA C, 1996, 262 (1-2) :54-62

[6] OXYGEN ORDERING EFFECTS AND THE SUPERCONDUCTING TRANSITION-TEMPERATURE T-C OF YBA2CU3OX UNDER PRESSURE [J].

FIETZ, WH ;

QUENZEL, R ;

GRUBE, K ;

METZGER, J ;

WEBER, T ;

LUDWIG, HA .

PHYSICA C, 1994, 235 :1785-1786

[7]

FIETZ WH, 1996, IN PRESS PHYSICA C

[8] RELATIONSHIP BETWEEN PRESSURE-INDUCED CHARGE-TRANSFER AND THE SUPERCONDUCTING TRANSITION-TEMPERATURE IN YBA2CU3O7-DELTA SUPERCONDUCTORS [J].

GUPTA, RP ;

GUPTA, M .

PHYSICAL REVIEW B, 1995, 51 (17) :11760-11766

[9] TIME-DEPENDENT STRUCTURAL PHENOMENA AT ROOM-TEMPERATURE IN QUENCHED YBA2CU3O6.41 - LOCAL OXYGEN ORDERING AND SUPERCONDUCTIVITY [J].

JORGENSEN, JD ;

PEI, S ;

LIGHTFOOT, P ;

SHI, H ;

PAULIKAS, AP ;

VEAL, BW .

PHYSICA C, 1990, 167 (5-6) :571-578

[10] PRESSURE-DEPENDENCE OF T(C) IN NDBA2CU3O7-DELTA TO 6 GPA [J].

KIM, CC ;

SKELTON, EF ;

OSOFSKY, MS ;

LIEBENBERG, DH .

PHYSICAL REVIEW B, 1993, 48 (09) :6431-6435

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