TY - JOUR
T1 - Quasi-particle spectrum of the nano-scaled anisotropic superconducting plate
AU - Kato, Masaru
AU - Suematsu, Hisataka
AU - Machida, Masahiko
AU - Koyama, Tomio
AU - Ishida, Takekazu
N1 - Funding Information:
Part of this work was performed under the inter-university cooperative Research program of the Institute for Materials Research, Tohoku University. And part of the numerical computation has been done on the computer facility of the Japan Atomic Energy Research Institute.
PY - 2006/5/15
Y1 - 2006/5/15
N2 - Using the Bogoliubov-de Gennes equation for a tight-binding model of electrons, we studied the superconducting state of nano-structured anisotropic superconductors. Assuming the attractive interaction between nearest-neighbor sites, we obtained mainly d(cos kx - cos ky)-wave pairing state. But the superconducting states are inhomogeneous because of the surface. Especially, square plates with π/4 rotation show suppression of the d(cos kx - cos ky)-wave order parameter and there appear the quasi-particle states along the surface in the superconducting energy gap.
AB - Using the Bogoliubov-de Gennes equation for a tight-binding model of electrons, we studied the superconducting state of nano-structured anisotropic superconductors. Assuming the attractive interaction between nearest-neighbor sites, we obtained mainly d(cos kx - cos ky)-wave pairing state. But the superconducting states are inhomogeneous because of the surface. Especially, square plates with π/4 rotation show suppression of the d(cos kx - cos ky)-wave order parameter and there appear the quasi-particle states along the surface in the superconducting energy gap.
KW - Bogoliubov-de Gennes equation
KW - Nano-scaled superconductors
KW - d-wave superconductors
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U2 - 10.1016/j.physc.2005.12.085
DO - 10.1016/j.physc.2005.12.085
M3 - Article
AN - SCOPUS:33746788515
VL - 437-438
SP - 132
EP - 135
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - SPEC. ISS.
ER -