Many-body effects in LuNi2B2C

被引：1

作者：

Bergk, B. ^{[1
]}

Petzold, V. ^{[2
,3
]}

Rosner, H. ^{[2
]}

Drechsler, S-L ^{[4
]}

Bartkowiak, M. ^{[1
]}

Ignatchik, O. ^{[1
]}

Sheikin, I. ^{[4
]}

Canfield, P. C. ^{[5
]}

Wosnitza, J. ^{[1
]}

机构：

[1] Forschungszentrum Dresden Rossendorf, Hochfeld Magnetlabor Dresden HLD, D-01314 Dresden, Germany

[2] Max Planck Inst Chem Phys Fester Stoffe, D-01187 Dresden, Germany

[3] Tech Univ Denmark, Ctr Atom Scale Mat Design, Dept Phys, DK-2800 Lyngby, Denmark

[4] Leibniz -Inst Solid State & Mat Res, IFW Dresden, D-01171 Dresden, Germany

[5] CNRS, Grenoble High Magnet Field Lab, F-38042 Grenoble, France

来源：

25TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT25), PART 5: SUPERCONDUCTIVITY | 2009年 / 150卷

关键词：

YNI2B2C;

D O I：

10.1088/1742-6596/150/5/052021

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

We present de Haas-van Alphen measurements of the nonmagnetic borocarbide superconductor LuNi2B2C. The electronic band structure is extracted from the magnetic quantum oscillations in the normal state. In accordance with previous investigations we find a complex band structure with different open and closed Fermi-surface sheets. From the temperature dependence of the oscillations amplitude the effective mass of the single bands can be determined. Due to many-body interactions we observe enhancements of the effective masses compared to the results by full-potential-density-functional calculations. Therefore, we are able to determine the angular dependence of the interaction strength for the different bands separately.

引用

页数：4

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