Tunneling spectroscopy of the superconducting state of URu2Si2

被引：7

作者：

Maldonado, A. ^{[1
]}

Guillamon, I. ^{[1
]}

Rodrigo, J. G. ^{[1
]}

Suderow, H. ^{[1
]}

Vieira, S. ^{[1
]}

Aoki, D. ^{[2
]}

Flouquet, J. ^{[2
]}

机构：

[1] Univ Autonoma Madrid, Fac Ciencias, Inst Ciencia Mat Nicolas Cabrera, Dept Fis Mat Condensada,Lab Bajas Temp, E-28049 Madrid, Spain

[2] CEA Grenoble, SPSMS, INAC, F-38054 Grenoble, France

来源：

PHYSICAL REVIEW B | 2012年 / 85卷 / 21期

关键词：

POINT-CONTACT SPECTROSCOPY; HIDDEN ORDER; LATTICE; MICROSCOPY; TRANSITION; ANISOTROPY; PRESSURE; TIPS;

D O I：

10.1103/PhysRevB.85.214512

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present measurements of the superconducting gap of URu2Si2 made with scanning tunneling microscopy using a superconducting tip of Al. We find tunneling conductance curves with a finite value at the Fermi level. The density of states is V shaped at low energies, and the quasiparticle peaks are located at values close to the expected superconducting gap from weak-coupling BCS theory. Our results point to rather opened gap structures and gap nodes on the Fermi surface.

引用

页数：6

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