APPEARANCE OF A MAXIMUM OF TC AND A LARGE NEGATIVE DTC/DP IN THE SUPERCONDUCTING TL-BA-CA-CU-O COMPOUNDS UNDER PRESSURE

被引：70

作者：

MORI, N ^{[1
]}

TAKAHASHI, H ^{[1
]}

SHIMAKAWA, Y ^{[1
]}

MANAKO, T ^{[1
]}

KUBO, Y ^{[1
]}

机构：

[1] NEC CORP LTD,FUNDAMENTAL RES LABS,MIYAMAE KU,KAWASAKI,KANAGAWA 213,JAPAN

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1990年 / 59卷 / 11期

关键词：

copper oxides; pressure effects; super conductivity;

D O I：

10.1143/JPSJ.59.3839

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The pressure dependence of Tcfor the superconducting Tl-Ba-Ca-Cu-O compounds has been measured. It is found that the pressure coefficients of Tc in Tl2Ba2CaCu2O8 change the sign from positive to negative with a maximum Tcand that the highly hole-doped TI2Ba2CuO6 compounds show a large negative value of dTc/dP. These results revealed a new feature of the pressure dependence of Tc in the hole-doped superconductors and can be interpreted speculatively in terms of the hole concentration in the CuO2 planes assuming that the carrier concentration is redistributed with pressure. © 1990, THE PHYSICAL SOCIETY OF JAPAN. All rights reserved.

引用

页码：3839 / 3842

页数：4

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