ANOMALIES IN ELASTIC AND THERMAL-PROPERTIES ASSOCIATED WITH THE SUPERCONDUCTING TRANSITION OF SINGLE-CRYSTAL BI2SR2CACU2OY

被引：7

作者：

NES, OM

CASTRO, M

SLASKI, M

LAEGREID, T

FOSSHEIM, K

MOTOHIRA, N

KITAZAWA, K

机构：

[1] NORWEGIAN INST TECHNOL,DIV PHYS,N-7034 TRONDHEIM,NORWAY

[2] UNIV SARAGOSSA,ARAGON INST MAT SCI,ZARAGOZA,SPAIN

[3] UNIV TOKYO,DEPT IND CHEM,TOKYO 113,JAPAN

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 1991年 / 4卷

关键词：

D O I：

10.1088/0953-2048/4/1S/115

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have measured the in-plane Young's modulus sound velocity v(e)(T) at kHz frequencies and the specific heat C(p)(T) of Bi2Sr2Ca1Cu2O(y) single crystals with T(c) = 93.2K. In the region of T(c) a softening is observed in V(e), corresponding to a discontinuity in dlnv(e)/dT of 6.2ppm/K and an indication of a change in DELTA-v(e)/v(e) of the order of 10ppm. From DELTA-C(p)/T(c) congruent-to 16mJ/(molK2) we find \partial-T(c)/partial-sigma-i\almost-equal-to 0.1K/kbar and -partial-2T(c)/partial-sigma-i2 almost-equal-to 10(-3) - 10(-2) K/kbar2 (i = 1,2).

引用

页码：S388 / S390

页数：3

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