Spin polarization and temperature dependence of electron effective mass in quantum wires |
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| Affiliation: | 1. Faculty of Physics and Engineering Physics, University of Science, Vietnam National University, Ho Chi Minh City 748355, Viet Nam;2. Ho Chi Minh City Institute of Physics, Vietnam Academy of Science and Technology, Mac Dinh Chi 1, Ho Chi Minh City 710116, Viet Nam;3. Laboratory of Applied Physics, Advanced Institute of Materials Science, Ton Duc Thang University, Ho Chi Minh City, Viet Nam;4. Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, Viet Nam |
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| Abstract: | The electron effective mass in GaAs quantum wires has been estimated by using a full dynamical random-phase approximation to examine its properties versus spin polarization, temperature, and carrier density. A decrease of mass with spin polarization is seen. The minority mass increases with the polarization while the majority mass decreases and this behaviour is seen for all densities. A maximal enhancement of mass at moderate temperature around 25 K is also presented. These calculations show a qualitative consistence with results in two-dimensional systems and help to control the electronic transport in quantum wires. |
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| Keywords: | Electron effective mass 2-dimensional Quantum wire Spin polarization Random-phase approximation |
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