Chen, K., Strigari, F., Sundermann, M., Hu, Z., Fisk, Z., Bauer, E. D., Rosa, P. F. S., Sarrao, J. L., Thompson, J. D., Herrero-Martin, J., Pellegrin, E., Betto, D., Kummer, K., Tanaka, A., Wirth, S. and Severing, A. (2018). Evolution of ground-state wave function in CeCoIn5 upon Cd or Sn doping. Phys. Rev. B, 97 (4). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9969

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Abstract

We present linear polarization-dependent soft-x-ray absorption spectroscopy data at the Ce M-4,M-5 edges of Cd- and Sn-dopedCeCoIn(5). The(4)f ground-state wave functions have been determined for their superconducting, anti-ferromagnetic, and paramagnetic ground states. The absence of changes in the wave functions in CeCo(In1-x Cd-x)(5) suggests that the 4f-conduction-electron (cf) hybridization is not affected by global Cd doping, thus supporting the interpretation of magnetic droplets nucleating long-range magnetic order. This is contrasted by changes in the wave function due to Sn substitution. Increasing Sn in CeCo(In1-y Sn-y)(5) compresses the 4f orbitals into the tetragonal plane of these materials, suggesting enhanced cf hybridization with the in-plane In(1) atoms and a homogeneous altering of the electronic structure. As these experiments show, the 4f wave functions are a very sensitive probe of small changes in the hybridization of 4f and conduction electrons, even conveying information about direction dependencies.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Chen, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Strigari, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sundermann, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hu, Z.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fisk, Z.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bauer, E. D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rosa, P. F. S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sarrao, J. L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Thompson, J. D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Herrero-Martin, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pellegrin, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Betto, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kummer, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tanaka, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wirth, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Severing, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-198738
DOI: 10.1103/PhysRevB.97.045134
Journal or Publication Title: Phys. Rev. B
Volume: 97
Number: 4
Date: 2018
Publisher: AMER PHYSICAL SOC
Place of Publication: COLLEGE PK
ISSN: 2469-9969
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
SUPERCONDUCTIVITY; TRANSITION; MAGNETISM; PRESSURE; BEAMLINEMultiple languages
Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed MatterMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/19873

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