Order parameter phase locking as a cause of a zero bias peak in the differential tunneling conductance of bilayers with electron-hole pairing
In n—p bilayer systems an exotic phase-coherent state emerges due to Coulomb pairing of n-layer electrons with p-layer holes. Unlike Josephson junctions, the order parameter phase may be locked by matrix elements of interlayer tunneling in n—p bilayers. Here we show how the phase locking phenomen...
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| Дата: | 2004 |
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| Автори: | , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2004
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| Назва видання: | Физика низких температур |
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| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/119475 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Order parameter phase locking as a cause of a zero bias peak in the differential tunneling conductance of bilayers with electron-hole pairing / A.I. Bezuglyj, S.I. Shevchenko // Физика низких температур. — 2004. — Т. 30, № 3. — С. 282-287. — Бібліогр.: 21 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
irk-123456789-119475 |
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dspace |
| spelling |
irk-123456789-1194752017-06-08T03:06:06Z Order parameter phase locking as a cause of a zero bias peak in the differential tunneling conductance of bilayers with electron-hole pairing Bezuglyj, A.I. Shevchenko, S.I. Свеpхпpоводимость, в том числе высокотемпеpатуpная In n—p bilayer systems an exotic phase-coherent state emerges due to Coulomb pairing of n-layer electrons with p-layer holes. Unlike Josephson junctions, the order parameter phase may be locked by matrix elements of interlayer tunneling in n—p bilayers. Here we show how the phase locking phenomenon specifies the response of the electron—hole condensate to interlayer voltages. In the absence of an applied magnetic field, the phase is steady-state (locked) at low interlayer voltages, V < Vc, but the phase increases monotonically with time (is unlocked) at V > Vc. The change in the system dynamics at V = Vc gives rise to a peak in the differential tunneling conductance. The peak width Vc is proportional to the absolute value of the tunneling matrix element |T₁₂|, but its height does not depend on |T12|; thus the peak is sharp for small |T₁₂|. An in-plane magnetic field reduces the peak height considerably. The present results are in qualitative agreement with the zero-bias peak behavior that has recently been observed in bilayer quantum Hall pseudoferromagnets with spontaneous interlayer phase coherence. 2004 Article Order parameter phase locking as a cause of a zero bias peak in the differential tunneling conductance of bilayers with electron-hole pairing / A.I. Bezuglyj, S.I. Shevchenko // Физика низких температур. — 2004. — Т. 30, № 3. — С. 282-287. — Бібліогр.: 21 назв. — англ. 0132-6414 PACS: 73.43.–f, 73.43.Jn http://dspace.nbuv.gov.ua/handle/123456789/119475 en Физика низких температур Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| topic |
Свеpхпpоводимость, в том числе высокотемпеpатуpная Свеpхпpоводимость, в том числе высокотемпеpатуpная |
| spellingShingle |
Свеpхпpоводимость, в том числе высокотемпеpатуpная Свеpхпpоводимость, в том числе высокотемпеpатуpная Bezuglyj, A.I. Shevchenko, S.I. Order parameter phase locking as a cause of a zero bias peak in the differential tunneling conductance of bilayers with electron-hole pairing Физика низких температур |
| description |
In n—p bilayer systems an exotic phase-coherent state emerges due to Coulomb pairing of
n-layer electrons with p-layer holes. Unlike Josephson junctions, the order parameter phase may be
locked by matrix elements of interlayer tunneling in n—p bilayers. Here we show how the phase
locking phenomenon specifies the response of the electron—hole condensate to interlayer voltages.
In the absence of an applied magnetic field, the phase is steady-state (locked) at low interlayer
voltages, V < Vc, but the phase increases monotonically with time (is unlocked) at V > Vc. The
change in the system dynamics at V = Vc gives rise to a peak in the differential tunneling conductance.
The peak width Vc is proportional to the absolute value of the tunneling matrix element
|T₁₂|, but its height does not depend on |T12|; thus the peak is sharp for small |T₁₂|. An in-plane magnetic
field reduces the peak height considerably. The present results are in qualitative agreement
with the zero-bias peak behavior that has recently been observed in bilayer quantum Hall
pseudoferromagnets with spontaneous interlayer phase coherence. |
| format |
Article |
| author |
Bezuglyj, A.I. Shevchenko, S.I. |
| author_facet |
Bezuglyj, A.I. Shevchenko, S.I. |
| author_sort |
Bezuglyj, A.I. |
| title |
Order parameter phase locking as a cause of a zero bias peak in the differential tunneling conductance of bilayers with electron-hole pairing |
| title_short |
Order parameter phase locking as a cause of a zero bias peak in the differential tunneling conductance of bilayers with electron-hole pairing |
| title_full |
Order parameter phase locking as a cause of a zero bias peak in the differential tunneling conductance of bilayers with electron-hole pairing |
| title_fullStr |
Order parameter phase locking as a cause of a zero bias peak in the differential tunneling conductance of bilayers with electron-hole pairing |
| title_full_unstemmed |
Order parameter phase locking as a cause of a zero bias peak in the differential tunneling conductance of bilayers with electron-hole pairing |
| title_sort |
order parameter phase locking as a cause of a zero bias peak in the differential tunneling conductance of bilayers with electron-hole pairing |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| publishDate |
2004 |
| topic_facet |
Свеpхпpоводимость, в том числе высокотемпеpатуpная |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/119475 |
| citation_txt |
Order parameter phase locking as a cause of a zero bias peak in the differential tunneling conductance of bilayers with electron-hole pairing / A.I. Bezuglyj, S.I. Shevchenko // Физика низких температур. — 2004. — Т. 30, № 3. — С. 282-287. — Бібліогр.: 21 назв. — англ. |
| series |
Физика низких температур |
| work_keys_str_mv |
AT bezuglyjai orderparameterphaselockingasacauseofazerobiaspeakinthedifferentialtunnelingconductanceofbilayerswithelectronholepairing AT shevchenkosi orderparameterphaselockingasacauseofazerobiaspeakinthedifferentialtunnelingconductanceofbilayerswithelectronholepairing |
| first_indexed |
2023-10-18T20:34:38Z |
| last_indexed |
2023-10-18T20:34:38Z |
| _version_ |
1796150564547985408 |