Superconducting Gap of UCoGe probed by Thermal Transport

Abstract

Thermal conductivity measurements in the superconducting state of the ferromagnet UCoGe were performed at very low temperatures and under magnetic field on samples of different qualities and with the heat current along the three crystallographic axis. This allows to disentangle intrinsic and extrinsic effects, confirm the situation of multigap superconductivity and shed new light on the situation expected or claimed for the gap in these ferromagnetic superconductors, like evidences of absence of "partially gapped" Fermi surfaces.

6 pages, 5 figures. To be appeared in Physical Review Rapid Communication

References in corpus (5)

• Superconductivity on the border of weak itinerant ferromagnetism in UCoGe
• Unusual upper critical field of the ferromagnetic superconductor UCoGe
• On the theory of superconductivity in ferromagnetic superconductors with triplet pairing
• Absence of Meissner State and Robust Ferromagnetism in the Superconducting State of UCoGe: Possible Evidence of Spontaneous Vortex State
• Multigap Superconductivity in the Ferromagnetic Superconductor UCoGe Revealed by Thermal Conductivity Measurements

Cited by in corpus (7)

• Unconventional Superconductivity in UTe2
• Symmetry protected line nodes in non-symmorphic magnetic space groups: Applications to UCoGe and UPd${}_2$Al${}_3$
• Theory of spin-polarized superconductors -- an analogue of superfluid ${}^3$He A-phase
• Non-unitary triplet superconductivity tuned by field-controlled magnetization --URhGe, UCoGe and UTe${}_2$--
• Spin-triplet superconductivity in the paramagnetic UCoGe under pressure studied by ${}^{59}$Co NMR
• Enhancement of superconductivity by pressure-induced critical ferromagnetic fluctuations in UCoGe
• Electron-beam Floating-zone Refined UCoGe