Electron accumulation layer in ultrastrong magnetic field
When a three-dimensional electron gas is subjected to a very strong magnetic field, it can reach a quasi-onedimensional state in which all electrons occupy the lowest Landau level. This state is referred to as the extreme quantum limit (EQL) and has been studied in the physics of pulsars and bulk...
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| Дата: | 2017 |
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| Автори: | , , |
| Формат: | Стаття |
| Мова: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2017
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| Назва видання: | Физика низких температур |
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| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/129372 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Electron accumulation layer in ultrastrong magnetic field / M. Sammon, Han Fu, B.I. Shklovskii // Физика низких температур. — 2017. — Т. 43, № 2. — С. 283-290. — Бібліогр.: 39 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
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irk-123456789-1293722018-01-20T03:03:29Z Electron accumulation layer in ultrastrong magnetic field Sammon, M. Han Fu Shklovskii, B.I. К 100-летию со дня рождения И.М. Лифшица When a three-dimensional electron gas is subjected to a very strong magnetic field, it can reach a quasi-onedimensional state in which all electrons occupy the lowest Landau level. This state is referred to as the extreme quantum limit (EQL) and has been studied in the physics of pulsars and bulk semiconductors. Here we present a theory of the EQL phase in electron accumulation layers created by an external electric field E at the surface of a semiconductor with a large Bohr radius such as InSb, PbTe, SrTiO₃ (STO), and particularly in the LaAlO₃/SrTiO₃ (LAO/STO) heterostructure. The phase diagram of the electron gas in the plane of the magnetic field strength and the electron surface concentration is found for different orientations of the magnetic field. We find that in addition to the quasi-classical metallic phase (M), there is a metallic EQL phase, as well as an insulating Wigner crystal state (WC). Within the EQL phase, the Thomas–Fermi approximation is used to find the electron density and the electrostatic potential profiles of the accumulation layer. Additionally, the quantum capacitance for each phase is calculated as a tool for experimental study of these phase diagrams. 2017 Article Electron accumulation layer in ultrastrong magnetic field / M. Sammon, Han Fu, B.I. Shklovskii // Физика низких температур. — 2017. — Т. 43, № 2. — С. 283-290. — Бібліогр.: 39 назв. — англ. 0132-6414 PACS: 71.10.−w, 73.20.Qt, 75.70.−i http://dspace.nbuv.gov.ua/handle/123456789/129372 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 |
К 100-летию со дня рождения И.М. Лифшица К 100-летию со дня рождения И.М. Лифшица |
| spellingShingle |
К 100-летию со дня рождения И.М. Лифшица К 100-летию со дня рождения И.М. Лифшица Sammon, M. Han Fu Shklovskii, B.I. Electron accumulation layer in ultrastrong magnetic field Физика низких температур |
| description |
When a three-dimensional electron gas is subjected to a very strong magnetic field, it can reach a quasi-onedimensional
state in which all electrons occupy the lowest Landau level. This state is referred to as the extreme
quantum limit (EQL) and has been studied in the physics of pulsars and bulk semiconductors. Here we present
a theory of the EQL phase in electron accumulation layers created by an external electric field E at the surface
of a semiconductor with a large Bohr radius such as InSb, PbTe, SrTiO₃ (STO), and particularly
in the LaAlO₃/SrTiO₃ (LAO/STO) heterostructure. The phase diagram of the electron gas in the plane of the
magnetic field strength and the electron surface concentration is found for different orientations of the magnetic
field. We find that in addition to the quasi-classical metallic phase (M), there is a metallic EQL phase, as well
as an insulating Wigner crystal state (WC). Within the EQL phase, the Thomas–Fermi approximation is used
to find the electron density and the electrostatic potential profiles of the accumulation layer. Additionally,
the quantum capacitance for each phase is calculated as a tool for experimental study of these phase diagrams. |
| format |
Article |
| author |
Sammon, M. Han Fu Shklovskii, B.I. |
| author_facet |
Sammon, M. Han Fu Shklovskii, B.I. |
| author_sort |
Sammon, M. |
| title |
Electron accumulation layer in ultrastrong magnetic field |
| title_short |
Electron accumulation layer in ultrastrong magnetic field |
| title_full |
Electron accumulation layer in ultrastrong magnetic field |
| title_fullStr |
Electron accumulation layer in ultrastrong magnetic field |
| title_full_unstemmed |
Electron accumulation layer in ultrastrong magnetic field |
| title_sort |
electron accumulation layer in ultrastrong magnetic field |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| publishDate |
2017 |
| topic_facet |
К 100-летию со дня рождения И.М. Лифшица |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/129372 |
| citation_txt |
Electron accumulation layer in ultrastrong magnetic field / M. Sammon, Han Fu, B.I. Shklovskii // Физика низких температур. — 2017. — Т. 43, № 2. — С. 283-290. — Бібліогр.: 39 назв. — англ. |
| series |
Физика низких температур |
| work_keys_str_mv |
AT sammonm electronaccumulationlayerinultrastrongmagneticfield AT hanfu electronaccumulationlayerinultrastrongmagneticfield AT shklovskiibi electronaccumulationlayerinultrastrongmagneticfield |
| first_indexed |
2023-10-18T20:57:35Z |
| last_indexed |
2023-10-18T20:57:35Z |
| _version_ |
1796151559740981248 |