Magnetic quantum oscillations in the charge-density-wave state of the organic metals α-(BEDT-TTF)₂MHg(SCN)₄ with M = K and Tl
The low-temperature charge-density-wave (CDW) state in the layered organic metals α-(BEDT-TTF)₂MHg(SCN)₄ has been studied by means of the Shubnikov–de Haas and de Haas–van Alphen effects. In addition to the dominant α-frequency, which is also observed in the normal state, both the magnetoresistanc...
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| Видавець: | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
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| Дата: | 2014 |
| Автори: | , , , , , , , , |
| Формат: | Стаття |
| Мова: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2014
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| Назва видання: | Физика низких температур |
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| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/119453 |
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| Цитувати: | Magnetic quantum oscillations in the charge-density-wave state of the organic metals α-(BEDT-TTF)₂MHg(SCN)₄ with M = K and Tl / M.V. Kartsovnik, V.N. Zverev, D. Andres, W. Biberacher, T. Helm, P.D. Grigoriev, R. Ramazashvili, N.D. Kushch, H. Müller // Физика низких температур. — 2014. — Т. 40, № 4. — С. 484-491. — Бібліогр.: 65 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
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irk-123456789-1194532017-06-08T03:05:15Z Magnetic quantum oscillations in the charge-density-wave state of the organic metals α-(BEDT-TTF)₂MHg(SCN)₄ with M = K and Tl Kartsovnik, M.V. Zverev, V.N. Andres, D. Biberacher, W. Helm, T. Grigoriev, P.D. Ramazashvili, R. Kushch, N.D. Müller, H. Магнитоквантовые осцилляции The low-temperature charge-density-wave (CDW) state in the layered organic metals α-(BEDT-TTF)₂MHg(SCN)₄ has been studied by means of the Shubnikov–de Haas and de Haas–van Alphen effects. In addition to the dominant α-frequency, which is also observed in the normal state, both the magnetoresistance and magnetic torque possess a slowly oscillating component. These slow oscillations provide a firm evidence for the CDW-induced reconstruction of the original cylindrical Fermi surface. The α-oscillations of the interlayer magnetoresistance exhibit an anomalous phase inversion in the CDW state, whereas the de Haas–van Alphen signal maintains the normal phase. We argue that the anomaly may be attributed to the magnetic-breakdown origin of the α-oscillations in the CDW state. A theoretical model illustrating the possibility of a phase inversion in the oscillating interlayer conductivity in the presence of a spatially fluctuating magnetic breakdown gap is proposed. 2014 Article Magnetic quantum oscillations in the charge-density-wave state of the organic metals α-(BEDT-TTF)₂MHg(SCN)₄ with M = K and Tl / M.V. Kartsovnik, V.N. Zverev, D. Andres, W. Biberacher, T. Helm, P.D. Grigoriev, R. Ramazashvili, N.D. Kushch, H. Müller // Физика низких температур. — 2014. — Т. 40, № 4. — С. 484-491. — Бібліогр.: 65 назв. — англ. 0132-6414 PACS 72.15.Gd, 74.70.Kn, 71.45.Lr http://dspace.nbuv.gov.ua/handle/123456789/119453 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 |
Магнитоквантовые осцилляции Магнитоквантовые осцилляции |
| spellingShingle |
Магнитоквантовые осцилляции Магнитоквантовые осцилляции Kartsovnik, M.V. Zverev, V.N. Andres, D. Biberacher, W. Helm, T. Grigoriev, P.D. Ramazashvili, R. Kushch, N.D. Müller, H. Magnetic quantum oscillations in the charge-density-wave state of the organic metals α-(BEDT-TTF)₂MHg(SCN)₄ with M = K and Tl Физика низких температур |
| description |
The low-temperature charge-density-wave (CDW) state in the layered organic metals α-(BEDT-TTF)₂MHg(SCN)₄
has been studied by means of the Shubnikov–de Haas and de Haas–van Alphen effects. In addition to the dominant
α-frequency, which is also observed in the normal state, both the magnetoresistance and magnetic torque possess a
slowly oscillating component. These slow oscillations provide a firm evidence for the CDW-induced reconstruction
of the original cylindrical Fermi surface. The α-oscillations of the interlayer magnetoresistance exhibit an anomalous
phase inversion in the CDW state, whereas the de Haas–van Alphen signal maintains the normal phase. We argue
that the anomaly may be attributed to the magnetic-breakdown origin of the α-oscillations in the CDW state.
A theoretical model illustrating the possibility of a phase inversion in the oscillating interlayer conductivity in the
presence of a spatially fluctuating magnetic breakdown gap is proposed. |
| format |
Article |
| author |
Kartsovnik, M.V. Zverev, V.N. Andres, D. Biberacher, W. Helm, T. Grigoriev, P.D. Ramazashvili, R. Kushch, N.D. Müller, H. |
| author_facet |
Kartsovnik, M.V. Zverev, V.N. Andres, D. Biberacher, W. Helm, T. Grigoriev, P.D. Ramazashvili, R. Kushch, N.D. Müller, H. |
| author_sort |
Kartsovnik, M.V. |
| title |
Magnetic quantum oscillations in the charge-density-wave state of the organic metals α-(BEDT-TTF)₂MHg(SCN)₄ with M = K and Tl |
| title_short |
Magnetic quantum oscillations in the charge-density-wave state of the organic metals α-(BEDT-TTF)₂MHg(SCN)₄ with M = K and Tl |
| title_full |
Magnetic quantum oscillations in the charge-density-wave state of the organic metals α-(BEDT-TTF)₂MHg(SCN)₄ with M = K and Tl |
| title_fullStr |
Magnetic quantum oscillations in the charge-density-wave state of the organic metals α-(BEDT-TTF)₂MHg(SCN)₄ with M = K and Tl |
| title_full_unstemmed |
Magnetic quantum oscillations in the charge-density-wave state of the organic metals α-(BEDT-TTF)₂MHg(SCN)₄ with M = K and Tl |
| title_sort |
magnetic quantum oscillations in the charge-density-wave state of the organic metals α-(bedt-ttf)₂mhg(scn)₄ with m = k and tl |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| publishDate |
2014 |
| topic_facet |
Магнитоквантовые осцилляции |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/119453 |
| citation_txt |
Magnetic quantum oscillations in the charge-density-wave state of the organic metals α-(BEDT-TTF)₂MHg(SCN)₄ with M = K and Tl / M.V. Kartsovnik, V.N. Zverev, D. Andres, W. Biberacher, T. Helm, P.D. Grigoriev, R. Ramazashvili, N.D. Kushch, H. Müller // Физика низких температур. — 2014. — Т. 40, № 4. — С. 484-491. — Бібліогр.: 65 назв. — англ. |
| series |
Физика низких температур |
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2023-10-18T20:34:36Z |
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2023-10-18T20:34:36Z |
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