Fermi sea and sky in the Bogoliubov-de Gennes equation
Fermi sea and sky in the Bogoliubov-de Gennes equation
We develop a comprehensive logical framework for effectively handling the overcomplete basis set in the Bogoliubov-de Gennes equation that contains two orthonormal basis sets conjugate with each other, such as particle and hole orthonormal basis sets. We highlight the significant implications of our logical framework from theoretical concepts and experimental …