Evolution of ground state wave function in CeCoIn$_5$ upon Cd or Sn doping
Phys. Rev. B 97, 045134 (2018) We present linear polarization-dependent soft x-ray absorption spectroscopy data at the Ce $M_{4,5}$ edges of Cd and Sn doped CeCoIn$_5$. The 4$f$ ground state wave functions have been determined for their superconducting, antiferromagnetic and paramagnetic ground stat...
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Main Authors | , , , , , , , , , , , , , , , |
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Format | Journal Article |
Language | English |
Published |
20.09.2017
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Subjects | |
Online Access | Get full text |
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Summary: | Phys. Rev. B 97, 045134 (2018) We present linear polarization-dependent soft x-ray absorption spectroscopy
data at the Ce $M_{4,5}$ edges of Cd and Sn doped CeCoIn$_5$. The 4$f$ ground
state wave functions have been determined for their superconducting,
antiferromagnetic and paramagnetic ground states. The absence of changes in the
wave functions in CeCo(In$_{1-x}$Cd$_x$)$_5$ suggests the 4$f$\,--\,conduction
electron ($cf$) hybridization is not affected by globally 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(In$_{1-y}$Sn$_y$)$_5$ compresses the 4$f$
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 4$f$ wave functions are a
very sensitive probe of small changes in the hybridization of 4$f$ and
conduction electrons, even conveying information about direction dependencies. |
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DOI: | 10.48550/arxiv.1709.06830 |