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

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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