Journal
PHYSICAL REVIEW MATERIALS
Volume 4, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevMaterials.4.054802
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Funding
- Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) [277146847, CRC 1238]
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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.
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