Andreev Reflection
978-613-5-64170-7
6135641700
80
2011-05-10
34.00 €
eng
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Andreev reflection (AR), named after the Russian physicist Alexander F. Andreev, is a type of particle scattering which occurs at interfaces between a superconductor (S) and a normal state material (N). It is a charge-transfer process by which normal current in N is transferred to supercurrent in S, avoiding the forbidden single-particle transmission within the superconducting energy gap by a dual transfer process across the interface. he process involves an electron (hole) incident on the interface from the normal state material at energies less than the superconducting energy gap. The incident electron (hole) forms a Cooper pair in the superconductor with the retroreflection of a hole (electron) of opposite spin and momentum to the incident electron (hole), as seen in the figure. The barrier transparency is assumed to be high, with no oxide or tunnel layer which reduces instances of normal electron-electron or hole-hole scattering at the interface.
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