Universität zu Köln

Sundermann, M., Yavas, H., Chen, K., Kim, D. J., Fisk, Z., Kasinathan, D., Haverkort, M. W., Thalmeier, P., Severing, A. and Tjeng, L. H. (2018). 4f Crystal Field Ground State of the Strongly Correlated Topological Insulator Sm B-6. Phys. Rev. Lett., 120 (1). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1079-7114

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Abstract

We investigated the crystal-electric field ground state of the 4f manifold in the strongly correlated topological insulator SmB6 using core-level nonresonant inelastic x-ray scattering. The directional dependence of the scattering function that arises from higher multipole transitions establishes unambiguously that the Gamma(8) quartet state of the Sm f(5) J = 5/2 configuration governs the ground-state symmetry and, hence, the topological properties of SmB6. Our findings contradict the results of density functional calculations repotted so far.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Sundermann, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Yavas, H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Chen, K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kim, D. J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Fisk, Z. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kasinathan, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Haverkort, M. W. UNSPECIFIED UNSPECIFIED UNSPECIFIED Thalmeier, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Severing, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Tjeng, L. H. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-199116
DOI:	10.1103/PhysRevLett.120.016402
Journal or Publication Title:	Phys. Rev. Lett.
Volume:	120
Number:	1
Date:	2018
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	1079-7114
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language NEUTRON-SCATTERING; MIXED-VALENCE; EXCITATIONS; SURFACE; GAP Multiple languages Physics, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/19911