Unconventional Bulk Superconductivity in YFe_{2}Ge_{2} Single Crystals.
Published version
Peer-reviewed
Repository URI
Repository DOI
Change log
Authors
Chen, Jiasheng https://orcid.org/0000-0002-5348-6716
Gamża, Monika B
Banda, Jacintha
Murphy, Keiron
Tarrant, James
Abstract
Sharp superconducting transition anomalies observed in a new generation of single crystals establish that bulk superconductivity is intrinsic to high purity YFe_{2}Ge_{2}. Low temperature heat capacity measurements suggest a disorder and field dependent residual Sommerfeld coefficient, consistent with disorder-induced in-gap states as expected for a sign-changing order parameter. The sevenfold reduction in disorder scattering in these new crystals to residual resistivities ≃0.45 μΩ cm was achieved using a new liquid transport growth technique, paving the way for multiprobe experiments investigating the normal and superconducting states of YFe_{2}Ge_{2}.
Description
Keywords
cond-mat.supr-con, cond-mat.supr-con
Journal Title
Phys Rev Lett
Conference Name
Journal ISSN
0031-9007
1079-7114
1079-7114
Volume Title
125
Publisher
American Physical Society (APS)
Publisher DOI
Rights
All rights reserved
Sponsorship
Engineering and Physical Sciences Research Council (EP/K012894/1)
Engineering and Physical Sciences Research Council (EP/P023290/1)
Engineering and Physical Sciences Research Council (EP/P023290/1)