Spin-lasers: spintronics beyond magnetoresistance.
ZUTIC, Igor; XU, Gaofeng; LINDEMANN, Markus; FARIA JUNIOR, Paulo E.; LEE, Jeongsu; LABINAC, Velimir; STOJ?IC, Kristian; SIPAHI, Guilherme Matos; HOFMANN, Martin R.; GERHARDT, Nils C.
ZUTIC, Igor; XU, Gaofeng; LINDEMANN, Markus; FARIA JUNIOR, Paulo E.; LEE, Jeongsu; LABINAC, Velimir; STOJ?IC, Kristian; SIPAHI, Guilherme Matos; HOFMANN, Martin R.; GERHARDT, Nils C.
Abstract: Introducing spin-polarized carriers in semiconductor lasers reveals an alternative path to realize roomtemperature 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.
@article={002997455,author = {ZUTIC, Igor; XU, Gaofeng; LINDEMANN, Markus; FARIA JUNIOR, Paulo E.; LEE, Jeongsu; LABINAC, Velimir; STOJ?IC, Kristian; SIPAHI, Guilherme Matos; HOFMANN, Martin R.; GERHARDT, Nils C.},title={Spin-lasers: spintronics beyond magnetoresistance},journal={Solid State Communications},note={v. 316-317, p. 113949-1-113949-17},year={2020}}