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Theoretical prediction of the fractional ac Josephson effect in p- and d-wave superconductors

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dc.creator Hyok-Jon Kwon
dc.creator Sengupta K.
dc.creator Yakovenko Victor M.
dc.date 2003
dc.date.accessioned 2013-06-01T10:42:08Z
dc.date.available 2013-06-01T10:42:08Z
dc.date.issued 2013-06-01
dc.identifier http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332003000400002
dc.identifier http://www.doaj.org/doaj?func=openurl&genre=article&issn=01039733&date=2003&volume=33&issue=4&spage=653
dc.identifier.uri http://koha.mediu.edu.my:8181/jspui/handle/123456789/8270
dc.description For certain orientations of Josephson junctions between two p x-wave or two d-wave superconductors, the subgap Andreev states produce a 4pi-periodic relation between the Josephson current I and the phase difference <FONT FACE=Symbol>f:</FONT> I <FONT FACE=Symbol>µ</FONT> sin( <FONT FACE=Symbol>f/</FONT>2). Consequently, the ac Josephson current has the fractional frequency eV/h, where V is the dc voltage. In the tunneling limit, the Josephson current is proportional to the first power (not square) of the electron tunneling amplitude. Thus, the Josephson current is carried by single electrons, rather than by Cooper pairs.
dc.publisher Sociedade Brasileira de Física
dc.source Brazilian Journal of Physics
dc.title Theoretical prediction of the fractional ac Josephson effect in p- and d-wave superconductors


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