Electronic structure of CeCoIn5 from angle-resolved photoemission spectroscopy

被引：41

作者：

Koitzsch, A. ^{[1
]}

Opahle, I. ^{[1
]}

Elgazzar, S. ^{[1
]}

Borisenko, S. V. ^{[1
]}

Geck, J. ^{[1
]}

Zabolotnyy, V. B. ^{[1
]}

Inosov, D. ^{[1
]}

Shiozawa, H. ^{[1
]}

Richter, M. ^{[1
]}

Knupfer, M. ^{[1
]}

Fink, J. ^{[1
,2
]}

Buechner, B. ^{[1
]}

Bauer, E. D. ^{[3
]}

Sarrao, J. L. ^{[3
]}

Follath, R. ^{[2
]}

机构：

[1] IFW Dresden, D-01171 Dresden, Germany

[2] BESSY, D-12489 Berlin, Germany

[3] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

来源：

PHYSICAL REVIEW B | 2009年 / 79卷 / 07期

关键词：

band structure; Brillouin zones; cerium alloys; cobalt alloys; density functional theory; Fermi level; Fermi surface; heavy fermion superconductors; indium alloys; photoelectron spectra; SUPERCONDUCTIVITY;

D O I：

10.1103/PhysRevB.79.075104

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have investigated the low-energy electronic structure of the heavy-fermion superconductor CeCoIn5 by angle-resolved photoemission and band-structure calculations. We measured the Fermi surface and energy distribution maps along the high-symmetry directions at h nu=100 eV and T=25 K. The compound has quasi-two-dimensional Fermi-surface sheets centered at the M-A line of the Brillouin zone. The band-structure calculations have been carried out within the local-density approximation where the 4f electrons have been treated either localized or itinerant. We discuss the comparison to the experimental data and the implications for the nature of the 4f electrons at the given temperature.

引用

页数：7

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