Superconductivity at 1 K in <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi>Cd</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow><mrow><msub><mrow><mi>Re</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow><mrow><msub><mrow><mi>O</mi></mrow><mrow><mn>7</mn></mrow></msub></mrow></math></span>

M. Hanawa; Y. Muraoka; T. Tayama; T. Sakakibara; J. Yamaura; Z. Hiroi

doi:10.1103/PhysRevLett.87.187001

Superconductivity at 1 K in ${Cd}_{2} {Re}_{2} O_{7}$

M. Hanawa, Y. Muraoka, T. Tayama, T. Sakakibara, J. Yamaura, and Z. Hiroi

Phys. Rev. Lett. 87, 187001 – Published 10 October 2001

Abstract

We report the first pyrochlore oxide superconductor ${Cd}_{2} {Re}_{2} O_{7}$ . Resistivity, magnetic susceptibility, and specific heat measurements on single crystals evidence a bulk superconductivity at 1 K. Another phase transition found at 200 K suggests that a peculiar electronic structure lies behind the superconductivity.