Zutic, Igor and Xu, Gaofeng and Lindemann, Markus and Faria Junior, Paulo E. and Lee, Jeongsu and Labinac, Velimir and Stojsic, Kristian and Sipahi, Guilherme M. and Hofmann, Martin R. and Gerhardt, Nils C. (2020) Spin-lasers: spintronics beyond magnetoresistance. SOLID STATE COMMUNICATIONS, 316: 113949. ISSN 0038-1098, 1879-2766
Full text not available from this repository. (Request a copy)Abstract
Introducing spin-polarized carriers in semiconductor lasers reveals an alternative path to realize room-temperature spintronic applications, beyond the usual magnetoresistive effects. Through carrier recombination, the angular momentum of the spin-polarized carriers is transferred to photons, thus leading to the circularly polarized emitted light. The intuition for the operation of such spin-lasers can be obtained from simple bucket and harmonic oscillator models, elucidating their steady-state and dynamic response, respectively. These lasers extend the functionalities of spintronic devices and exceed the performance of conventional (spin-unpolarized) lasers, including an order of magnitude faster modulation frequency. Surprisingly, this ultrafast operation relies on a short carrier spin relaxation time and a large anisotropy of the refractive index, both viewed as detrimental in spintronics and conventional lasers. Spin-lasers provide a platform to test novel concepts in spin devices and offer progress connected to the advances in more traditional areas of spintronics.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ROOM-TEMPERATURE; POLARIZATION DYNAMICS; THRESHOLD REDUCTION; INJECTION; BIREFRINGENCE; INFORMATION; LIGHT; FUNDAMENTALS; BEHAVIOR; GAIN; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Petra Gürster |
| Date Deposited: | 14 Apr 2021 08:45 |
| Last Modified: | 14 Apr 2021 08:45 |
| URI: | https://pred.uni-regensburg.de/id/eprint/44134 |
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