Hydrostaticity and hidden order: effects of experimental conditions on the temperature-pressure phase diagram of URu2Si2

被引：8

作者：

Butch, N. P. ^{[1
]}

Jeffries, J. R. ^{[1
]}

Zocco, D. A. ^{[1
]}

Maple, M. B. ^{[1
]}

机构：

[1] Univ Calif San Diego, Inst Pure & Appl Phys Sci, Dept Phys, La Jolla, CA 92093 USA

来源：

HIGH PRESSURE RESEARCH | 2009年 / 29卷 / 02期

关键词：

hidden order; hydrostaticity; Fluorinert; electrical resistivity; HIGH-MAGNETIC-FIELD; ELECTRICAL-RESISTIVITY; SUPERCONDUCTING PROPERTIES; TRANSITIONS; SYSTEM; DEPENDENCE; FLUORINERT; NEUTRON; STATES; LIMITS;

D O I：

10.1080/08957950802564676

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The pressure dependence of the hidden order phase transition of URu2Si2 is shown to depend sensitively upon the quality of hydrostatic pressure conditions during electrical resistivity measurements. Hysteresis in pressure is demonstrated for two choices of pressure medium: the commonly used mixture of 1:1 Fluorinert FC70/FC77 and pure FC75. In contrast, no hysteresis is observed when the pressure medium is a 1:1 mixture of n-pentane/isoamyl alcohol, as it remains hydrostatic over the entire studied pressure range. Possible ramifications for the interpretation of the temperature-pressure phase diagram of URu2Si2 are discussed.

引用

页码：335 / 343

页数：9

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