FIELD-DEPENDENT SPECIFIC-HEAT AND MULTIPLE SUPERCONDUCTING PHASES IN UPT3

被引：18

作者：

ELLMAN, B

YANG, J

ROSENBAUM, TF

BUCHER, E

机构：

[1] UNIV CHICAGO,DEPT PHYS,CHICAGO,IL 60637

[2] AT&T BELL LABS,MURRAY HILL,NJ 07974

[3] UNIV CONSTANCE,W-7750 CONSTANCE,GERMANY

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 64卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.64.1569

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have measured the specific heat, C, of single-crystal UPt3 in the superconducting regime as a function of temperature, T, and magnetic field, H, parallel to the c axis. We find that C(T) at fixed H<Hc2 shows no evidence for different superconducting states. In contrast, our field-sweep data, C(H) at fixed T, have sharp changes in slope at HS Hc2/2. The phase diagram deduced from these features agrees with neutron-scattering and torsional-oscillator results on the same samples. These thermodynamic measurements as a function of magnetic field constrain theories of exotic superconductivity in UPt3. © 1990 The American Physical Society.

引用

页码：1569 / 1572

页数：4

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