1.

Record Nr.

UNINA9910137015603321

Autore

Zhu Jian-Xin

Titolo

Bogoliubov-de Gennes Method and Its Applications / / by Jian-Xin Zhu

Pubbl/distr/stampa

Cham : , : Springer International Publishing : , : Imprint : Springer, , 2016

ISBN

3-319-31314-2

Edizione

[1st ed. 2016.]

Descrizione fisica

1 online resource (XI, 188 p. 50 illus., 33 illus. in color.)

Collana

Lecture Notes in Physics, , 0075-8450 ; ; 924

Disciplina

537.623

Soggetti

Superconductivity

Superconductors

Physics

Mathematical physics

Nanoscale science

Nanoscience

Nanostructures

Strongly Correlated Systems, Superconductivity

Numerical and Computational Physics, Simulation

Mathematical Applications in the Physical Sciences

Nanoscale Science and Technology

Mathematical Methods in Physics

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Nota di contenuto

Part I Bogoliubov-de Gennes Theory: Method -- Bogliubov-de Gennes Equations for Superconductors in the continuum model -- BdG Equations in Tight-Binding Model -- Part II Bogoliubov-de Gennes Theory: Applications -- Local Electronic Structure around a Single Impurity in Superconductors -- Disorder Effects on Electronic and Transport Properties in Superconductors -- Local Electronic Structure in Superconductors under a Magnetic Field -- Transport across Normal-Metal/Superconductor Junctions -- Topological and Quantum Size Effects in Superconductors at Reduced Length Scale -- References -- Additional Reading. .

Sommario/riassunto

The purpose of this book is to provide an elementary yet systematic



description of the Bogoliubov-de Gennes (BdG) equations, their unique symmetry properties and their relation to Green’s function theory. Specifically, it introduces readers to the supercell technique for the solutions of the BdG equations, as well as other related techniques for more rapidly solving the equations in practical applications. The BdG equations are derived from a microscopic model Hamiltonian with an effective pairing interaction and fully capture the local electronic structure through self-consistent solutions via exact diagonalization. This approach has been successfully generalized to study many aspects of conventional and unconventional superconductors with inhomogeneities – including defects, disorder or the presence of a magnetic field – and becomes an even more attractive choice when the first-principles information of a typical superconductor is incorporated via the construction of a low-energy tight-binding model. Further, the lattice BdG approach is essential when theoretical results for local electronic states around such defects are compared with the scanning tunneling microscopy measurements. Altogether, these lectures provide a timely primer for graduate students and non-specialist researchers, while also offering a useful reference guide for experts in the field.