Spin Polarization Oscillations without Spin Precession: Spin-Orbit Entangled Resonances in Quasi-One-Dimensional Spin Transport
Resonant behavior involving spin-orbit entangled states occurs for spin transport along a narrow channel defined in a two-dimensional electron gas, including an apparent rapid relaxation of the spin polarization for special values of the channel width and applied magnetic field (so-called ballistic...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2014-03-01
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| Series: | Physical Review X |
| Online Access: | http://doi.org/10.1103/PhysRevX.4.011048 |
| _version_ | 1818718573061734400 |
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| author | D. H. Berman M. Khodas M. E. Flatté |
| author_facet | D. H. Berman M. Khodas M. E. Flatté |
| author_sort | D. H. Berman |
| collection | DOAJ |
| description | Resonant behavior involving spin-orbit entangled states occurs for spin transport along a narrow channel defined in a two-dimensional electron gas, including an apparent rapid relaxation of the spin polarization for special values of the channel width and applied magnetic field (so-called ballistic spin resonance). A fully quantum-mechanical theory for transport using multiple subbands of the one-dimensional system provides the dependence of the spin density on the applied magnetic field and channel width and position along the channel. We show how the spatially nonoscillating part of the spin density vanishes when the Zeeman energy matches the subband energy splittings. The resonance phenomenon persists in the presence of disorder. |
| first_indexed | 2024-12-17T19:53:11Z |
| format | Article |
| id | doaj.art-3221172d82954595818b47341224f921 |
| institution | Directory Open Access Journal |
| issn | 2160-3308 |
| language | English |
| last_indexed | 2024-12-17T19:53:11Z |
| publishDate | 2014-03-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review X |
| spelling | doaj.art-3221172d82954595818b47341224f9212022-12-21T21:34:40ZengAmerican Physical SocietyPhysical Review X2160-33082014-03-014101104810.1103/PhysRevX.4.011048Spin Polarization Oscillations without Spin Precession: Spin-Orbit Entangled Resonances in Quasi-One-Dimensional Spin TransportD. H. BermanM. KhodasM. E. FlattéResonant behavior involving spin-orbit entangled states occurs for spin transport along a narrow channel defined in a two-dimensional electron gas, including an apparent rapid relaxation of the spin polarization for special values of the channel width and applied magnetic field (so-called ballistic spin resonance). A fully quantum-mechanical theory for transport using multiple subbands of the one-dimensional system provides the dependence of the spin density on the applied magnetic field and channel width and position along the channel. We show how the spatially nonoscillating part of the spin density vanishes when the Zeeman energy matches the subband energy splittings. The resonance phenomenon persists in the presence of disorder.http://doi.org/10.1103/PhysRevX.4.011048 |
| spellingShingle | D. H. Berman M. Khodas M. E. Flatté Spin Polarization Oscillations without Spin Precession: Spin-Orbit Entangled Resonances in Quasi-One-Dimensional Spin Transport Physical Review X |
| title | Spin Polarization Oscillations without Spin Precession: Spin-Orbit Entangled Resonances in Quasi-One-Dimensional Spin Transport |
| title_full | Spin Polarization Oscillations without Spin Precession: Spin-Orbit Entangled Resonances in Quasi-One-Dimensional Spin Transport |
| title_fullStr | Spin Polarization Oscillations without Spin Precession: Spin-Orbit Entangled Resonances in Quasi-One-Dimensional Spin Transport |
| title_full_unstemmed | Spin Polarization Oscillations without Spin Precession: Spin-Orbit Entangled Resonances in Quasi-One-Dimensional Spin Transport |
| title_short | Spin Polarization Oscillations without Spin Precession: Spin-Orbit Entangled Resonances in Quasi-One-Dimensional Spin Transport |
| title_sort | spin polarization oscillations without spin precession spin orbit entangled resonances in quasi one dimensional spin transport |
| url | http://doi.org/10.1103/PhysRevX.4.011048 |
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