Landau–Zener tunneling in multiferroic composites
For a coupled ferroelectric/ferromagnetic composite we demonstrate theoretically a mechanism for ferroelectric–ferromagnetic excitation conversion. The switching occurs upon sweeping an external homogeneous magnetic field that modifies the spectrum. We show analytically and by direct numerical simul...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2015-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/17/1/013030 |
| _version_ | 1797751236201545728 |
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| author | R Khomeriki L Chotorlishvili J Berakdar |
| author_facet | R Khomeriki L Chotorlishvili J Berakdar |
| author_sort | R Khomeriki |
| collection | DOAJ |
| description | For a coupled ferroelectric/ferromagnetic composite we demonstrate theoretically a mechanism for ferroelectric–ferromagnetic excitation conversion. The switching occurs upon sweeping an external homogeneous magnetic field that modifies the spectrum. We show analytically and by direct numerical simulations that the excitation transfer proceeds via Landau–Zener tunneling: in the case of an abrupt application of the magnetic field (a diabatic regime) there is no transition of excitation energy between the electric and magnetic systems, while increasing the magnetic field slowly (an adiabatic process) an almost complete excitation transfer takes place. |
| first_indexed | 2024-03-12T16:45:35Z |
| format | Article |
| id | doaj.art-778414f607fd4d34b2725db6bcf22448 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:45:35Z |
| publishDate | 2015-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-778414f607fd4d34b2725db6bcf224482023-08-08T14:15:54ZengIOP PublishingNew Journal of Physics1367-26302015-01-0117101303010.1088/1367-2630/17/1/013030Landau–Zener tunneling in multiferroic compositesR Khomeriki0L Chotorlishvili1J Berakdar2Institut für Physik, Martin-Luther Universität Halle-Wittenberg , D-06099 Halle/Saale, Germany; Physics Department, Tbilisi State University , 3 Chavchavadze, 0128 Tbilisi, GeorgiaInstitut für Physik, Martin-Luther Universität Halle-Wittenberg , D-06099 Halle/Saale, GermanyInstitut für Physik, Martin-Luther Universität Halle-Wittenberg , D-06099 Halle/Saale, GermanyFor a coupled ferroelectric/ferromagnetic composite we demonstrate theoretically a mechanism for ferroelectric–ferromagnetic excitation conversion. The switching occurs upon sweeping an external homogeneous magnetic field that modifies the spectrum. We show analytically and by direct numerical simulations that the excitation transfer proceeds via Landau–Zener tunneling: in the case of an abrupt application of the magnetic field (a diabatic regime) there is no transition of excitation energy between the electric and magnetic systems, while increasing the magnetic field slowly (an adiabatic process) an almost complete excitation transfer takes place.https://doi.org/10.1088/1367-2630/17/1/013030multiferroicTunnelinglevel crossing85.80.Jm75.78.-n77.80.Fm |
| spellingShingle | R Khomeriki L Chotorlishvili J Berakdar Landau–Zener tunneling in multiferroic composites New Journal of Physics multiferroic Tunneling level crossing 85.80.Jm 75.78.-n 77.80.Fm |
| title | Landau–Zener tunneling in multiferroic composites |
| title_full | Landau–Zener tunneling in multiferroic composites |
| title_fullStr | Landau–Zener tunneling in multiferroic composites |
| title_full_unstemmed | Landau–Zener tunneling in multiferroic composites |
| title_short | Landau–Zener tunneling in multiferroic composites |
| title_sort | landau zener tunneling in multiferroic composites |
| topic | multiferroic Tunneling level crossing 85.80.Jm 75.78.-n 77.80.Fm |
| url | https://doi.org/10.1088/1367-2630/17/1/013030 |
| work_keys_str_mv | AT rkhomeriki landauzenertunnelinginmultiferroiccomposites AT lchotorlishvili landauzenertunnelinginmultiferroiccomposites AT jberakdar landauzenertunnelinginmultiferroiccomposites |