Universität zu Köln

Froehlich, Tobias, Wang, Zhiwei ORCID: 0000-0003-0182-2471, Bagchi, Mahasweta, Stunault, Anne, Ando, Yoichi ORCID: 0000-0002-3553-3355 and Braden, Markus ORCID: 0000-0002-9284-6585 (2020). Crystal structure and distortion of superconducting CuxBi2Se3. Phys. Rev. Mater., 4 (5). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2475-9953

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Abstract

The crystal structure of the candidate topological superconductor CuxBi2Se3 was studied by single-crystal neutron diffraction using samples obtained by inserting the Cu dopant electrochemically. Neither structural refinements nor calculated scattering-density maps find a significant occupation of Cu at the intercalation site between the quintuple layers of Bi2Se3. Following Bragg reflection intensities as a function of temperature, there is no signature of a structural phase transition between 295 and 2 K. However, the analysis of large sets of Bragg reflections indicates a small structural distortion breaking the rotational axis due to small displacements of the Bi ions.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Froehlich, Tobias UNSPECIFIED UNSPECIFIED UNSPECIFIED Wang, Zhiwei UNSPECIFIED orcid.org/0000-0003-0182-2471 UNSPECIFIED Bagchi, Mahasweta UNSPECIFIED UNSPECIFIED UNSPECIFIED Stunault, Anne UNSPECIFIED UNSPECIFIED UNSPECIFIED Ando, Yoichi UNSPECIFIED orcid.org/0000-0002-3553-3355 UNSPECIFIED Braden, Markus UNSPECIFIED orcid.org/0000-0002-9284-6585 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-334377
DOI:	10.1103/PhysRevMaterials.4.054802
Journal or Publication Title:	Phys. Rev. Mater.
Volume:	4
Number:	5
Date:	2020
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	2475-9953
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Physics > Institute of Physics II
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language STEREOCHEMISTRY; SPECTROSCOPY; SYSTEM; OXIDES Multiple languages Materials Science, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/33437