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Title: Spin-current diode with a ferromagnetic semiconductor

Abstract

Diode is a key device in electronics: the charge current can flow through the device under a forward bias, while almost no current flows under a reverse bias. Here, we propose a corresponding device in spintronics: the spin-current diode, in which the forward spin current is large but the reversed one is negligible. We show that the lead/ferromagnetic quantum dot/lead system and the lead/ferromagnetic semiconductor/lead junction can work as spin-current diodes. The spin-current diode, a low dissipation device, may have important applications in spintronics, as the conventional charge-current diode does in electronics.

Authors:
;  [1]
  1. International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, China and Collaborative Innovation Center of Quantum Matter, Beijing 100871 (China)
Publication Date:
OSTI Identifier:
22399006
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 106; Journal Issue: 18; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 77 NANOSCIENCE AND NANOTECHNOLOGY; ELECTRIC CONTACTS; ELECTRIC CURRENTS; FERROMAGNETIC MATERIALS; LEAD; QUANTUM DOTS; SEMICONDUCTOR JUNCTIONS; SEMICONDUCTOR MATERIALS; SPIN

Citation Formats

Sun, Qing-Feng, E-mail: sunqf@pku.edu.cn, and Xie, X. C. Spin-current diode with a ferromagnetic semiconductor. United States: N. p., 2015. Web. doi:10.1063/1.4920988.
Sun, Qing-Feng, E-mail: sunqf@pku.edu.cn, & Xie, X. C. Spin-current diode with a ferromagnetic semiconductor. United States. doi:10.1063/1.4920988.
Sun, Qing-Feng, E-mail: sunqf@pku.edu.cn, and Xie, X. C. Mon . "Spin-current diode with a ferromagnetic semiconductor". United States. doi:10.1063/1.4920988.
@article{osti_22399006,
title = {Spin-current diode with a ferromagnetic semiconductor},
author = {Sun, Qing-Feng, E-mail: sunqf@pku.edu.cn and Xie, X. C.},
abstractNote = {Diode is a key device in electronics: the charge current can flow through the device under a forward bias, while almost no current flows under a reverse bias. Here, we propose a corresponding device in spintronics: the spin-current diode, in which the forward spin current is large but the reversed one is negligible. We show that the lead/ferromagnetic quantum dot/lead system and the lead/ferromagnetic semiconductor/lead junction can work as spin-current diodes. The spin-current diode, a low dissipation device, may have important applications in spintronics, as the conventional charge-current diode does in electronics.},
doi = {10.1063/1.4920988},
journal = {Applied Physics Letters},
issn = {0003-6951},
number = 18,
volume = 106,
place = {United States},
year = {2015},
month = {5}
}