Crystal-field ground state of the noncentrosymmetric superconductor CePt3Si: A combined polarized soft x-ray absorption and polarized neutron study

T. Willers; B. Fåk; N. Hollmann; P. O. Körner; Z. Hu; A. Tanaka; D. Schmitz; M. Enderle; G. Lapertot; L. H. Tjeng; A. Severing

doi:10.1103/PhysRevB.80.115106

Crystal-field ground state of the noncentrosymmetric superconductor CePt3Si: A combined polarized soft x-ray absorption and polarized neutron study

T. Willers, B. Fåk, N. Hollmann, P. O. Körner, Z. Hu, A. Tanaka, D. Schmitz, M. Enderle, G. Lapertot, L. H. Tjeng, A. Severing

DOI 10.1103/PhysRevB.80.115106 · Physical Review B

T1

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Abstract

We determined the crystal-field split Hund’s rule ground state of the noncentrosymmetric heavy fermion superconductor CePt3Si with polarization dependent soft x-ray absorption spectroscopy (XAS) and polarized neutron scattering. We are also able to give the sequence of the crystal-field states from the temperature evolution of the linear dichroic signal in the XAS. The quantitative analysis of the XAS temperature dependence together with the neutron transition energies complete the identification of the crystal-field level scheme.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
CePt3Si Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	0.75	Pressure not reported	unknown
CeIrSi3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
CeRhSi3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown