Modular portable unit for thermal conductivity measurements in multiple cryogenic/magnetic field environments

2018 ◽  
Vol 89 (1) ◽  
pp. 013903 ◽  
Author(s):  
M. A. Tanatar ◽  
V. A. Bondarenko ◽  
E. I. Timmons ◽  
R. Prozorov
Keyword(s):  
Magnetic Field ◽  
Thermal Conductivity ◽  
Conductivity Measurements

scholarly journals Multigap Superconductivity in the Ferromagnetic Superconductor UCoGe Revealed by Thermal Conductivity Measurements

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Ludovic Howald ◽  
Mathieu Taupin ◽  
Dai Aoki
Keyword(s):  
Magnetic Field ◽  
Thermal Conductivity ◽  
Single Crystal ◽  
Superconducting Gap ◽  
Conductivity Measurements ◽  
Residual Term ◽  
Field Dependency ◽  
Low Magnetic Field

We performed thermal conductivity measurements on a single crystal of the ferromagnetic superconductor UCoGe under magnetic field. Two different temperature dependencies of the thermal conductivity are observed, for H→∥b→: linear at low magnetic field and quadratic for magnetic field larger than 1 Tesla. At the same field value, a plateau appears in the field dependency of the residual term of thermal conductivity. Such observations suggest a multigap superconductivity with a line of nodes in the superconducting gap.

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