Photo-Induced Spin Dynamics in Semiconductor Quantum Wells
<p>Abstract</p> <p>We experimentally investigate the dynamics of spins in GaAs quantum wells under applied electric bias by photoluminescence (PL) measurements excited with circularly polarized light. The bias-dependent circular polarization of PL (<it>P</it> <sub>...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2009-01-01
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| Series: | Nanoscale Research Letters |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1007/s11671-008-9241-2 |
| _version_ | 1797708269784924160 |
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| author | Miah M |
| author_facet | Miah M |
| author_sort | Miah M |
| collection | DOAJ |
| description | <p>Abstract</p> <p>We experimentally investigate the dynamics of spins in GaAs quantum wells under applied electric bias by photoluminescence (PL) measurements excited with circularly polarized light. The bias-dependent circular polarization of PL (<it>P</it> <sub>PL</sub>) with and without magnetic field is studied. The<it>P</it> <sub>PL</sub>without magnetic field is found to be decayed with an enhancement of increasing the strength of the negative bias. However,<it>P</it> <sub>PL</sub>in a transverse magnetic field shows oscillations under an electric bias, indicating that the precession of electron spin occurs in quantum wells. The results are discussed based on the electron–hole exchange interaction in the electric field.</p> |
| first_indexed | 2024-03-12T06:18:51Z |
| format | Article |
| id | doaj.art-88729581a6f545e7ad7fb3dd78a5f984 |
| institution | Directory Open Access Journal |
| issn | 1931-7573 1556-276X |
| language | English |
| last_indexed | 2024-03-12T06:18:51Z |
| publishDate | 2009-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Nanoscale Research Letters |
| spelling | doaj.art-88729581a6f545e7ad7fb3dd78a5f9842023-09-03T02:21:32ZengSpringerOpenNanoscale Research Letters1931-75731556-276X2009-01-0144385388Photo-Induced Spin Dynamics in Semiconductor Quantum WellsMiah M<p>Abstract</p> <p>We experimentally investigate the dynamics of spins in GaAs quantum wells under applied electric bias by photoluminescence (PL) measurements excited with circularly polarized light. The bias-dependent circular polarization of PL (<it>P</it> <sub>PL</sub>) with and without magnetic field is studied. The<it>P</it> <sub>PL</sub>without magnetic field is found to be decayed with an enhancement of increasing the strength of the negative bias. However,<it>P</it> <sub>PL</sub>in a transverse magnetic field shows oscillations under an electric bias, indicating that the precession of electron spin occurs in quantum wells. The results are discussed based on the electron–hole exchange interaction in the electric field.</p>http://dx.doi.org/10.1007/s11671-008-9241-2PhotoluminescenceSpin transportExchange interaction |
| spellingShingle | Miah M Photo-Induced Spin Dynamics in Semiconductor Quantum Wells Nanoscale Research Letters Photoluminescence Spin transport Exchange interaction |
| title | Photo-Induced Spin Dynamics in Semiconductor Quantum Wells |
| title_full | Photo-Induced Spin Dynamics in Semiconductor Quantum Wells |
| title_fullStr | Photo-Induced Spin Dynamics in Semiconductor Quantum Wells |
| title_full_unstemmed | Photo-Induced Spin Dynamics in Semiconductor Quantum Wells |
| title_short | Photo-Induced Spin Dynamics in Semiconductor Quantum Wells |
| title_sort | photo induced spin dynamics in semiconductor quantum wells |
| topic | Photoluminescence Spin transport Exchange interaction |
| url | http://dx.doi.org/10.1007/s11671-008-9241-2 |
| work_keys_str_mv | AT miahm photoinducedspindynamicsinsemiconductorquantumwells |