50 K enhancement of T-c by pressure in the Hg-2212 superconductor

被引：11

作者：

Acha, C

Loureiro, SM

Chaillout, C

Tholence, JL

Capponi, JJ

Marezio, M

NunezRegueiro, M

机构：

[1] CNRS, CTR RECH TRES BASSES TEMP, F-38042 GRENOBLE 09, FRANCE

[2] CNRS, CRISTALLOG LAB, F-38042 GRENOBLE 09, FRANCE

[3] CNRS, EPM MATFORMAG, F-38042 GRENOBLE 09, FRANCE

来源：

SOLID STATE COMMUNICATIONS | 1997年 / 102卷 / 01期

关键词：

high T-c superconductors; X-ray scattering; electronic transport; phase transitions; high pressure;

D O I：

10.1016/S0038-1098(96)00757-0

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The superconducting properties of mercury cuprates are extremely sensitive to compression. The highest transition temperatures obtained up to date have been measured on Hg-1223 at 25-30 Gpa (T-c similar to 164 K at the onset) and imply an increase of about 20 K with respect to the ambient pressure T-c0. We report here the largest total pressure effect (> 50 K over a span of 20 GPa) ever observed for several samples of bi-mercury layer Hg2Ba2(Y1-xCax)Cu2O8-delta compositions. Different Ca doping levels give different initial T(c)s but retain the same strong pressure dependence. The large T-c increase with pressure for all the Hg-based compounds, independently of their doping level, is revealing the existence of a common structural parameter, which identification will be a guide for future synthesis efforts of record-high T-c materials. (C) 1997 Elsevier Science Ltd.

引用

页码：1 / 5

页数：5

共 27 条

[1] PRESSURE-DEPENDENCE OF TC AND CHARGE-TRANSFER IN YBA2CU3OX (6.35 LESS-THAN-OR-EQUAL-TO X LESS-THAN-OR-EQUAL-TO 7) SINGLE-CRYSTALS [J].

ALMASAN, CC ;

HAN, SH ;

LEE, BW ;

PAULIUS, LM ;

MAPLE, MB ;

VEAL, BW ;

DOWNEY, JW ;

PAULIKAS, AP ;

FISK, Z ;

SCHIRBER, JE .

PHYSICAL REVIEW LETTERS, 1992, 69 (04) :680-683

[2] Crystal structure of HgBa2Ca2Cu3O8+delta at high pressure (to 8.5 GPa) determined by powder neutron diffraction [J].

Armstrong, AR ;

David, WIF ;

Gameson, I ;

Edwards, PP ;

Capponi, JJ ;

Bordet, P ;

Marezio, M .

PHYSICAL REVIEW B, 1995, 52 (21) :15551-15557

[3]

BERMAN IV, 1988, JETP LETT+, V47, P733

[4] Stoichiometry and pressure dependence of T-c of YBa2Cu3Ox [J].

Bucher, B ;

Kaldis, E ;

Kruger, C ;

Wachter, P .

EUROPHYSICS LETTERS, 1996, 34 (05) :391-395

[5] PRESSURE EFFECT ON THE T-C OF HGBA2CUO4+DELTA WITH 0.07-LESS-THAN-OR-EQUAL-TO-DELTA-LESS-THAN-OR-EQUAL-TO-0.39 [J].

CAO, Y ;

XIONG, Q ;

XUE, YY ;

CHU, CW .

PHYSICAL REVIEW B, 1995, 52 (09) :6854-6857

[6]

CHAILLOUT C, 1993, PHYSICA, V175, P293

[7] SUPERCONDUCTIVITY ABOVE 150-K IN HGBA2CA2CU3O8+DELTA AT HIGH-PRESSURES [J].

CHU, CW ;

GAO, L ;

CHEN, F ;

HUANG, ZJ ;

MENG, RL ;

XUE, YY .

NATURE, 1993, 365 (6444) :323-325

[8] SUPERCONDUCTIVITY UP TO 164-K IN HGBA2CAM-1CUMO2M+2+DELTA (M=1,2, AND 3) UNDER QUASI-HYDROSTATIC PRESSURES [J].

GAO, L ;

XUE, YY ;

CHEN, F ;

XIONG, Q ;

MENG, RL ;

RAMIREZ, D ;

CHU, CW ;

EGGERT, JH ;

MAO, HK .

PHYSICAL REVIEW B, 1994, 50 (06) :4260-4263

[9] 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

[10] PRESSURE-INDUCED STRUCTURAL-CHANGES IN SUPERCONDUCTING HGBA2CAN-1CUNO2N+2+DELTA (N = 1, 2, 3) COMPOUNDS [J].

HUNTER, BA ;

JORGENSEN, JD ;

WAGNER, JL ;

RADAELLI, PG ;

HINKS, DG ;

SHAKED, H ;

HITTERMAN, RL ;

VONDREELE, RB .

PHYSICA C, 1994, 221 (1-2) :1-10

← 1 2 3 →