关键词: 激子/
激子磁极化子/
发光光谱/
玻色子激光
English Abstract
Excitonic magnetic polarons and their luminescence in II-VI diluted magnetic semiconductor micro-nanostructures
Zou Shuang-Yang1,4,Muhammad Arshad2,
Yang Gao-Ling3,
Liu Rui-Bin1,
Shi Li-Jie1,
Zhang Yong-You1,
Jia Bao-Hua4,
Zhong Hai-Zheng1,
Zou Bing-Suo1
1. School of Materials Science and Engineering, Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems, Beijing Institute of Technology, Beijing 100081, China;
2. Department of Physics, College of Science Majmaah University, Al-Zulfi 11932, Saudi Arabia;
3. Department of Physics of Complex Systems, Faculty of Physics, Weizmann Institute of Science, Rehovot 7610001, Israel;
4. Centre for Micro-Photonics, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Victoria 3122, Australia
Received Date:22 June 2018
Accepted Date:25 September 2018
Published Online:05 January 2019
Abstract:Spin is an intrinsic nature of the angular momentum of elementary particle like electron and photon. Currently the collective spin behaviors of the multi-electrons in condensed matter, such as GMR, CMR and topological insulator which are the behaviors of ground state, have been a research focus in the condensed matter physics, due to the fact that the collective spin is related to electronic transports. Exciton is another type of bosonic quasiparticle, an excited state of electronhole pair in solid, which has a short lifetime and can recombine to emit light. Whether excitons can also exhibit the spin-polarized dominance before they recombine, has not been understood yet. It is proposed that excitons form condensate by themselves or light binding. Can coupled spins conduce to the formation of the exciton condensate in solid? Excitonic magnetic polaron (EMP) is the composite exciton of ferromagnetically coupled spins and free excitons in magnetic semiconductors, which may lead to ferromagnetic Bose-Einstein condensate (BEC) due to the binding of collective spins in a microstructure, like the photon binding excitons (exciton polaritons) in an optical cavity However, this subject has not been a research focus yet. Here in this paper, we review the progress of the EMP formation, its dynamic behaviors and spin polarized collective EMP emission and lasing in Ⅱ-VI dilute magnetic semiconductor micro-structures in our group Besides, we also present some expectations for the applications or advances in the quantum phenomena such as spin-related emission and lasing, spin induced BEC, photon induced magnetism and Hall effect, etc. Even more achievements of EMP could be expected in the future.
Keywords: exciton/
excitonic magnetic polaron/
luminescence/
Bosonic lasing
