Effect of annealing on the magnetic and superconducting properties of single-crystalline UCoGe

Abstract

Single-crystals of the new ferromagnetic superconductor UCoGe have been grown. The quality of as-grown samples can be significantly improved by a heat-treatment procedure, which increases the residual resistance ratio (RRR) from ~5 to ~30. Magnetization and resistivity measurements show the annealed samples have a sharp ferromagnetic transition with a Curie temperature T_C is 2.8 K. The ordered moment of 0.06 mu_B is directed along the orthorhombic c-axis. Superconductivity is found below a resistive transition temperature T_s = 0.65 K.

References in corpus (2)

• Superconductivity on the border of weak itinerant ferromagnetism in UCoGe
• Unusual upper critical field of the ferromagnetic superconductor UCoGe

Cited by in corpus (16)

• Single-component superconducting state in UTe2 at 2 K
• Anisotropic critical magnetic fluctuations in the ferromagnetic superconductor UCoGe
• Anomalous spin distribution in the superconducting ferromagnet UCoGe studied by polarized neutron diffraction
• The superconducting ferromagnet UCoGe
• Ferromagnetic quantum critical point in UCo1-xFexGe
• Determination of spin and orbital magnetization in the ferromagnetic superconductor UCoGe
• Ultra-High Resolution Neutron Spectroscopy of Low-Energy Spin Dynamics in UGe${}_2$
• Thermal expansion of the superconducting ferromagnet UCoGe
• Effect of Pressure on Magnetism of UIrGe
• Angular variation of the magnetoresistance of the superconducting ferromagnet UCoGe
• Superconducting and ferromagnetic phase diagram of UCoGe probed by thermal expansion
• Consecutive magnetic phase diagram of UCoGe-URhGe-UIrGe system
• Dramatic elastic response at the critical end point in UTe${}_2$
• Antiferromagnetic ground state in NpCoGe
• Electron-beam Floating-zone Refined UCoGe
• Magnon excitations and quantum critical behavior of the ferromagnet U${}_4$Ru${}_7$Ge${}_6$