Field-dependent energy scales in URu2Si2

被引：27

作者：

Santini, P

Amoretti, G

Caciuffo, R

Bourdarot, F

Fåk, B

机构：

[1] Univ Oxford, Clarendon Lab, Oxford OX1 3PU, England

[2] Univ Parma, Dipartimento Fis, Ist Nazl Fis Mat, I-43100 Parma, Italy

[3] Univ Ancona, Ist Nazl Fis Mat, I-60131 Ancona, Italy

[4] CEA Grenoble, Dept Rech Fondamentale Mat Condensee, SPSMS, MDN, F-38054 Grenoble, France

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 85卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.85.654

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

At low temperature, macroscopic properties of URu2Si2 display a characteristic energy scale Delta(0)(B) which decreases when a magnetic field is applied, and eventually vanishes at an extrapolated value of the field of about 40 T. We have performed inelastic neutron scattering measurements of the magnetic dynamics of URu2Si2 in applied fields along the c axis of intensities up to 12 T. We show that Delta(0)(B) is not related to gaps in the magnetic fluctuations spectra. This provides direct evidence of the fact that two distinct energy scales govern the physics of this compound.

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页码：654 / 657

页数：4

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