Low-Temperature Crystal Structure of the Unconventional Spin-Triplet Superconductor of UTe2 from Single-Crystal Neutron Diffraction

Published

February 1, 2020

Author(s)

Vladimir Hutanu, Hao Deng, Sheng Ran, Wesley T. Fuhrman, Henrik Thoma, Nicholas Butch

Abstract

The crystal structure of the new superconductor UTe₂ has been investigated for the first time at low temperature (LT) of 2.7 K, just closely above the superconducting transition of about 1.7 K by single crystal neutron diffraction, in order to prove, whether the orthorhombic structure of type Immm (Nr. 71 Int. Tabl.) reported for room temperature (RT) persists down to the superconducting phase and can be considered as a parent symmetry for the development of spin triplet superconductivity. Our results show that the RT structure reported previously obtained by single crystal X-ray diffraction indeed describes also the LT neutron diffraction data with high precision. No structural change from RT down to 2.7 K is observed. Detailed structural parameteres for Ute₂ at LT are reported.

Citation

Acta Crystallographica Section B-Structural Science

Volume

76

Issue

1

Pub Type

Journals

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Keywords

superconductor, diffraction

Citation

Hutanu, V. , Deng, H. , Ran, S. , Fuhrman, W. , Thoma, H. and Butch, N. (2020), Low-Temperature Crystal Structure of the Unconventional Spin-Triplet Superconductor of UTe₂ from Single-Crystal Neutron Diffraction, Acta Crystallographica Section B-Structural Science, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=928180 (Accessed October 20, 2025)