Superconducting and Magnetic Transitions in the Heavy-Fermion System U<span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">Ru</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow></math></span><span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">Si</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow></math></span>

T. T. M. Palstra; A. A. Menovsky; J. van den Berg; A. J. Dirkmaat; P. H. Kes; G. J. Nieuwenhuys; J. A. Mydosh

doi:10.1103/PhysRevLett.55.2727

Superconducting and Magnetic Transitions in the Heavy-Fermion System U ${Ru}_{2}$ ${Si}_{2}$

T. T. M. Palstra, A. A. Menovsky, J. van den Berg, A. J. Dirkmaat, P. H. Kes, G. J. Nieuwenhuys, and J. A. Mydosh

Phys. Rev. Lett. 55, 2727 – Published 9 December 1985

Abstract

The intermetallic compound U ${Ru}_{2}$ ${Si}_{2}$ can be classified as a heavy-fermion system because of its large linear specific-heat coefficient $γ = 180$ mJ/mol· $K^{2}$ . Susceptibility, magnetization, and specific-heat measurements on single-crystal samples indicate both a magnetic phase transition at 17.5 K and a superconducting transition at 0.8 K. The magnetic and superconducting properties are highly anisotropic.