TY - JOUR
T1 - Spin-tunneling time in a hybrid semimagnetic/semiconductor heterostructure with a single paramagnetic layer
AU - Guo, Yong
AU - Wang, Bin
AU - Gu, Bing Lin
AU - Kawazoe, Yoshiyuki
N1 - Funding Information:
Y.G. gratefully acknowledges support from the National Natural Science Foundation of China (Grant No. 10004006), the National Key Project of Basic Research development plan (Grant No. G2000067107), and Japanese Grand-in-Aid for Scientific Research (B)(2).
PY - 2001/12/17
Y1 - 2001/12/17
N2 - We investigate spin-dependent tunneling times in a hybrid semimagnetic/semiconductor heterostructure with a single paramagnetic layer under the influence of both electric and magnetic fields. We find that the tunneling times for electrons strongly depend on the incident energy, the magnitude of the external fields, and on their spin orientation. The results indicate that the tunneling time for spin-up electrons can be longer than that for spin-down ones by up to several orders of magnitude. This implies that tunneling for spin-up and spin-down electrons are separated in time within the same heterostructure.
AB - We investigate spin-dependent tunneling times in a hybrid semimagnetic/semiconductor heterostructure with a single paramagnetic layer under the influence of both electric and magnetic fields. We find that the tunneling times for electrons strongly depend on the incident energy, the magnitude of the external fields, and on their spin orientation. The results indicate that the tunneling time for spin-up electrons can be longer than that for spin-down ones by up to several orders of magnitude. This implies that tunneling for spin-up and spin-down electrons are separated in time within the same heterostructure.
KW - Semimagnetic semiconductor
KW - Spin polarization
KW - Spin separation
KW - Spintronics
KW - Tunneling time
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U2 - 10.1016/S0375-9601(01)00753-8
DO - 10.1016/S0375-9601(01)00753-8
M3 - Article
AN - SCOPUS:0037623644
SN - 0375-9601
VL - 291
SP - 453
EP - 458
JO - Physics Letters, Section A: General, Atomic and Solid State Physics
JF - Physics Letters, Section A: General, Atomic and Solid State Physics
IS - 6
ER -