Fractional ac Josephson effect in unconventional superconductors

For certain orientations of Josephson junctions between two px-wave or two d-wave superconductors,
 the subgap Andreev bound states produce a 4π-periodic relation between the Josephson
 current I and the phase difference:φ I sin(φ/2). Consequently, the ac Josephson current has the&am...

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Date:2004
Main Authors: Hyok-Jon Kwon, Sengupta, K., Yakovenko, V.M.
Format: Article
Language:English
Published: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2004
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Online Access:https://nasplib.isofts.kiev.ua/handle/123456789/119836
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Journal Title:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Cite this:Fractional ac Josephson effect in unconventional superconductors / Hyok-Jon Kwon, K. Sengupta, V.M. Yakovenko // Физика низких температур. — 2004. — Т. 30, № 7-8. — С. 814-822. — Бібліогр.: 41 назв. — англ.

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Digital Library of Periodicals of National Academy of Sciences of Ukraine
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author Hyok-Jon Kwon
Sengupta, K.
Yakovenko, V.M.
author_facet Hyok-Jon Kwon
Sengupta, K.
Yakovenko, V.M.
citation_txt Fractional ac Josephson effect in unconventional superconductors / Hyok-Jon Kwon, K. Sengupta, V.M. Yakovenko // Физика низких температур. — 2004. — Т. 30, № 7-8. — С. 814-822. — Бібліогр.: 41 назв. — англ.
collection DSpace DC
description For certain orientations of Josephson junctions between two px-wave or two d-wave superconductors,
 the subgap Andreev bound states produce a 4π-periodic relation between the Josephson
 current I and the phase difference:φ I sin(φ/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 between unconventional superconductors is carried by ingle electrons, rather
 than by Cooper pairs. The fractional ac Josephson effect can be observed experimentally by measuring
 frequency spectrum of microwave radiation from the junction
first_indexed 2025-11-30T16:34:00Z
format Article
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institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
issn 0132-6414
language English
last_indexed 2025-11-30T16:34:00Z
publishDate 2004
publisher Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
record_format dspace
spelling Hyok-Jon Kwon
Sengupta, K.
Yakovenko, V.M.
2017-06-10T06:53:07Z
2017-06-10T06:53:07Z
2004
Fractional ac Josephson effect in unconventional superconductors / Hyok-Jon Kwon, K. Sengupta, V.M. Yakovenko // Физика низких температур. — 2004. — Т. 30, № 7-8. — С. 814-822. — Бібліогр.: 41 назв. — англ.
0132-6414
PACS: 74.50.+r, 74.70.Kn, 74.72.–h
https://nasplib.isofts.kiev.ua/handle/123456789/119836
For certain orientations of Josephson junctions between two px-wave or two d-wave superconductors,
 the subgap Andreev bound states produce a 4π-periodic relation between the Josephson
 current I and the phase difference:φ I sin(φ/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 between unconventional superconductors is carried by ingle electrons, rather
 than by Cooper pairs. The fractional ac Josephson effect can be observed experimentally by measuring
 frequency spectrum of microwave radiation from the junction
The work was supported by NSF Grant
 DMR-0137726. K. Sengupta thanks S.M. Girvin for
 support.
en
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
Физика низких температур
Сверхпроводимость и мезоскопические структуры
Fractional ac Josephson effect in unconventional superconductors
Article
published earlier
spellingShingle Fractional ac Josephson effect in unconventional superconductors
Hyok-Jon Kwon
Sengupta, K.
Yakovenko, V.M.
Сверхпроводимость и мезоскопические структуры
title Fractional ac Josephson effect in unconventional superconductors
title_full Fractional ac Josephson effect in unconventional superconductors
title_fullStr Fractional ac Josephson effect in unconventional superconductors
title_full_unstemmed Fractional ac Josephson effect in unconventional superconductors
title_short Fractional ac Josephson effect in unconventional superconductors
title_sort fractional ac josephson effect in unconventional superconductors
topic Сверхпроводимость и мезоскопические структуры
topic_facet Сверхпроводимость и мезоскопические структуры
url https://nasplib.isofts.kiev.ua/handle/123456789/119836
work_keys_str_mv AT hyokjonkwon fractionalacjosephsoneffectinunconventionalsuperconductors
AT senguptak fractionalacjosephsoneffectinunconventionalsuperconductors
AT yakovenkovm fractionalacjosephsoneffectinunconventionalsuperconductors