Park Tuson, Bauer E D, Thompson J D
Los Alamos National Laboratory, Los Alamos, NM 87545, USA.
Phys Rev Lett. 2008 Oct 24;101(17):177002. doi: 10.1103/PhysRevLett.101.177002. Epub 2008 Oct 23.
We report field-orientation specific heat studies of the pressure-induced heavy-fermion superconductor CeRhIn5. These experiments provide the momentum-dependent superconducting gap function for the first time in any pressure-induced superconductor. In the coexisting phase of superconductivity and antiferromagnetism, field rotation within the Ce-In plane reveals fourfold modulation in the density of states, which favors a d-wave order parameter and constrains a theory of the interplay between superconductivity and magnetism.
我们报告了对压力诱导的重费米子超导体CeRhIn5的场取向比热研究。这些实验首次在任何压力诱导的超导体中提供了依赖于动量的超导能隙函数。在超导和反铁磁共存相中，Ce-In平面内的场旋转揭示了态密度的四重调制，这有利于d波序参量，并限制了超导与磁性相互作用的理论。
