Abstract
AbstractUTe2 is a newly-discovered unconventional superconductor wherein multicomponent topological superconductivity is anticipated based on the presence of two superconducting transitions and time-reversal symmetry breaking in the superconducting state. The observation of two superconducting transitions, however, remains controversial. Here we demonstrate that UTe2 single crystals displaying an optimal superconducting transition temperature at 2 K exhibit a single transition and remarkably high quality supported by their large residual resistance ratio and small residual heat capacity in the superconducting state. Our results shed light on the intrinsic superconducting properties of UTe2 and bring into question whether UTe2 is a multicomponent superconductor at ambient pressure.
Funder
DOE | Office of Science
DOE | LDRD | Los Alamos National Laboratory
Publisher
Springer Science and Business Media LLC
Subject
Mechanics of Materials,General Materials Science
Reference45 articles.
1. Hill, H. H. Plutonium 1970 and Other Actinides. In Miner, W. N. (ed.) Plutonium 1970 Other Actinides (The Metallurgical Society of the AIME, 1970).
2. Moore, K. T. & Van Der Laan, G. Nature of the 5f states in actinide metals. Revi. Modern Phys. 81, 235–298 (2009).
3. Palstra, T. T. M. et al. Superconducting and Magnetic Transitions in the Heavy-Fermion System URu2Si2. Phys. Rev. Lett. 55, 2727–2730 (1985).
4. Mydosh, J. A. & Oppeneer, P. M. Colloquium : Hidden order, superconductivity, and magnetism: The unsolved case of URu2Si2. Rev. Modern Phys. 83, 1301–1322 (2011).
5. Schemm, E. R., Gannon, W. J., Wishne, C. M., Halperin, W. P. & Kapitulnik, A. Observation of broken time-reversal symmetry in the heavy-fermion superconductor UPt3. Science 345, 190–193 (2014).
Cited by
52 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献