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Andreev Reflection in Superconducting Junctions

Part of the SpringerBriefs in Physics Book Series

DOI: 10.1007/978-981-16-4165-7

ISBN: 978-981-16-4164-0

Publisher: Springer Singapore - Springer Journals

Nov 13, 2021

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Chapter 1Introduction

Asano, Yasuhiro

Pages: 1 –8

[On the basis of mean-field theory of superconductivity, we discuss low-energy transport properties in superconducting junctions in this book. Andreev reflection at a junction interface is a key phenomenon to understand characteristic feature of transport properties in superconducting...
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Chapter 2Theoretical Tools

Asano, Yasuhiro

Pages: 9 –20

[Today we know that superconductivity is a many-body effect of electrons in a metal and that the attractive interaction between two electrons plays an important role in stabilizing the superconducting state. In order to describe superconducting phenomena, several theoretical tools must be used....
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Chapter 3Mean-Field Theory of Superconductivity

Asano, Yasuhiro

Pages: 21 –37

[We derive the mean-field Hamiltonian for superconductivity with paying careful attention to the pair potential and its physical consequence. The macroscopic wave function is introduced to describe the superconducting condensate. The magnetic properties of a superconductor are described by...
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Chapter 4Andreev Reflection

Asano, Yasuhiro

Pages: 39 –57

[Andreev reflection at an interface between a superconductor and a normal metal represents the penetration of a Cooper pair into the normal metal. The Andreev reflections coefficients are calculated from the boundary conditions at the interface of the wave functions obtained by solving the...
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Chapter 5Unconventional Superconductor

Asano, Yasuhiro

Pages: 59 –80

[We will discuss the Andreev reflection from a superconductor that is characterized by an unconventional pair potential belonging to spin-singlet d-wave symmetry or spin-triplet p-wave symmetry. The unconventional pair potential changes its sign on the Fermi surface, which is a source of the...
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Chapter 6Various Josephson Junctions

Asano, Yasuhiro

Pages: 81 –99

[The Josephson current between two different superconductors is discussed. The calculated results show that the Josephson effect is sensitive to the difference in the pairing symmetries between two superconductors. Because of such severe selection rules, the Josephson junction can be a symmetry...
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Chapter 7Proximity Effect in a Normal Metal

Asano, Yasuhiro

Pages: 101 –118

[When a superconductor is attached to a normal metal, a Cooper pair penetrates into the normal metal. As a result, the normal metal possesses superconducting-like properties such as screening of magnetic fields and decreasing its electric resistance. Such phenomenon is called proximity...

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