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Hutanu V, Deng H, Ran S, Fuhrman WT, Thoma H, Butch NP. Low-temperature crystal structure of the unconventional spin-triplet superconductor UTe 2 from single-crystal neutron diffraction. ACTA CRYSTALLOGRAPHICA SECTION B, STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS 2020; 76:137-143. [PMID: 32831248 PMCID: PMC8202135 DOI: 10.1107/s2052520619016950] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 12/18/2019] [Indexed: 06/01/2023]
Abstract
The crystal structure of a new superconductor UTe2 has been investigated using single-crystal neutron diffraction for the first time at the low temperature (LT) of 2.7 K, just above the superconducting transition temperature of ∼1.6 K, in order to clarify whether the orthorhombic structure of type Immm (No. 71), reported for the room-temperature (RT) structure persists down to the superconducting phase and can be considered as a parent symmetry for the development of spin-triplet superconductivity. In contrast to the previously reported phase transition at about 100 K [Stöwe (1996). J. Solid State Chem. 127, 202-210], our high-precision LT neutron diffraction data show that the body-centred RT symmetry is indeed maintained down to 2.7 K. No sign of a structural change from RT down to 2.7 K was observed. The most significant change depending on temperature was observed for the U ion position and the U-U distance along the c direction, implying its potential importance as a magnetic interaction path. No magnetic order could be deduced from the neutron diffraction data refinement at 2.7 K, consistent with bulk magnetometry. Assuming normal thermal evolution of the lattice parameters, moderately large linear thermal expansion coefficients of about α = 2.8 (7) × 10-5 K-1 are estimated.
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Affiliation(s)
- Vladimir Hutanu
- Institute of Crystallography, RWTH Aachen University and Jülich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ), Lichtenbergstrasse 1, Garching, 85748, Germany
| | - Hao Deng
- Institute of Crystallography, RWTH Aachen University and Jülich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ), Lichtenbergstrasse 1, Garching, 85748, Germany
| | - Sheng Ran
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
- Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park, MD 20742, USA
| | - Wesley T. Fuhrman
- Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park, MD 20742, USA
| | - Henrik Thoma
- Jülich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ), Lichtenbergstrasse 1, Garching, 85748, Germany
| | - Nicholas P. Butch
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
- Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park, MD 20742, USA
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Chapter 195 Oxygen nonstoichiometry and lattice effects in YBa2Cu3Ox. ACTA ACUST UNITED AC 2001. [DOI: 10.1016/s0168-1273(01)31004-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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Sharma RP, Venkatesan T, Zhang ZH, Liu JR, Chu R, Chu WK. Evidence for Large Static and Dynamic Distortions in High Tc Superconducting YBa2Cu3O 7- delta Crystals over a Wide Temperature Range. PHYSICAL REVIEW LETTERS 1996; 77:4624-4627. [PMID: 10062585 DOI: 10.1103/physrevlett.77.4624] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Aminov L, Malkin B, Teplov M. Chapter 150 Magnetic properties of nonmetallic lanthanide compounds. HANDBOOK ON THE PHYSICS AND CHEMISTRY OF RARE EARTHS 1996. [DOI: 10.1016/s0168-1273(96)22007-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Breit V, Schweiss P, Hauff R, Wühl H, Claus H, Rietschel H, Erb A, Müller-Vogt G. Evidence for chain superconductivity in near-stoichiometric YBa2Cu3Ox single crystals. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:15727-15730. [PMID: 9980942 DOI: 10.1103/physrevb.52.r15727] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Chaplot SL, Reichardt W, Pintschovius L, Pyka N. Common interatomic potential model for the lattice dynamics of several cuprates. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:7230-7242. [PMID: 9979665 DOI: 10.1103/physrevb.52.7230] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Goldman M, Burmester CP, Wille LT, Gronsky R. Role of elasticity associated with oxygen ordering in YBa2Cu3Oz. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:1331-1346. [PMID: 9980715 DOI: 10.1103/physrevb.52.1331] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Sendyka TR, Dmowski W, Egami T, Seiji N, Yamauchi H, Tanaka S. Temperature dependence of the local structure of YBa2Cu4O8. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:6747-6750. [PMID: 9977218 DOI: 10.1103/physrevb.51.6747] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Hecker NE, Mook HA, Harvey JA, Hill NW, Moxon MC, Golovchenko JA. Absence of anomalous copper vibrations in YBa2Cu3O7- delta. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:16129-16132. [PMID: 9975996 DOI: 10.1103/physrevb.50.16129] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Markiewicz RS. Comment on "Electronic specific heat of YBa2Cu3O6+x from 1.8 to 300 K". PHYSICAL REVIEW LETTERS 1994; 73:1310. [PMID: 10057683 DOI: 10.1103/physrevlett.73.1310] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Riedling S, Bräuchle G, Lucht R, Röhberg K, Löhneysen H, Claus H, Erb A, Müller-Vogt G. Observation of the Wohlleben effect in YBa2Cu3O7- delta single crystals. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:13283-13286. [PMID: 10010260 DOI: 10.1103/physrevb.49.13283] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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