2 papers
cond-mat.supr-con2004
Optical properties of unconventional superconductors
Takashi Yanagisawa, Hajime Shibata
The optical conductivity measurements give a powerful tool to investigate the nature of the superconducting gap for conventional and unconventional superconductors. In this article…
cond-mat1995
Spin-reflection positivity of the Kondo lattice at half-filling
T. Yanagisawa, Y. Shimoi
We examine the spin-reflection positivity of the ground state of the Kondo lattice model at half-filling with the antiferromagnetic and ferromagnetic exchange couplings . Fo…