PRECISE MEASUREMENTS OF THE AB-PLANE RESISTANCE OF YBA2CU3O7-Y SINGLE-CRYSTALS UNDER HYDROSTATIC-PRESSURE

被引：4

作者：

KACHINSKY, VN ^{[1
]}

KOCHETKOV, VN ^{[1
]}

MAKARENKO, IN ^{[1
]}

NAROZHNYI, VN ^{[1
]}

UVAROVA, TG ^{[1
]}

机构：

[1] RUSSIAN ACAD SCI,INST HIGH PRESSURE PHYS,TROITSK 142092,RUSSIA

来源：

PHYSICA C | 1995年 / 247卷 / 3-4期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1016/0921-4534(95)00197-2

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The temperature dependence of the ab-plane electrical resistance (R(ab)(T)) of YBa2Cu3O7-y single crystals has been studied under hydrostatic pressure up to 8 kbar using helium as the pressure transmitting medium. The partial derivative ln(partial derivative R(ab)/partial derivative T)/partial derivative ln V value obtained by us is approximately four times greater than that calculated from the data of S.W. Tozer et al. [Phys. Rev. B 47 (1993) 8089] for the pressure range 3.6-130 kbar. The lattice Gruneisen constant (gamma) estimated from our data in terms of the Bloch-Gruneisen model is unusually large, gamma=6.8.

引用

页码：347 / 350

页数：4