TY - JOUR
T1 - Electrical spin injection in ferromagnetic/nonmagnetic semiconductor heterostructures
AU - Ohno, Y.
AU - Arata, I.
AU - Matsukura, F.
AU - Ohno, H.
AU - Young, D. K.
AU - Beschoten, B.
AU - Awschalom, D. D.
N1 - Funding Information:
This work was partly supported by “Research for the Future Program” from the Japan Society for the Promotion of Science (JSPS-RFTF 97P00202), Grant-in-Aids for the Scientific Research from the Ministry of Education, Science, Sports and Culture, Japan (No. 12305001 and No. 11650002), the Murata foundation, AFOSR F49620-99-1-0033, DARPA/ONR N00014-99-1096, and NSF DMR-0071888.
PY - 2001/5
Y1 - 2001/5
N2 - Magneto-electroluminescence properties of ferromagnetic/nonmagnetic semiconductor pn junction light emitting diodes (LEDs) are presented. A ferromagnetic p-type (Ga,Mn)As layer is grown on i-(In,Ga)As quantum well (QW)/n-GaAs so that the degree of spin polarization of holes injected from (Ga,Mn)As into GaAs can be probed by analyzing the polarization of light emitted from the LED structures. The EL polarization as a function of magnetic field exhibits clear hysteresis below the ferromagnetic transition temperature of (Ga,Mn)As, which is the evidence that spin-polarized electrical current is injected into nonmagnetic semiconductor.
AB - Magneto-electroluminescence properties of ferromagnetic/nonmagnetic semiconductor pn junction light emitting diodes (LEDs) are presented. A ferromagnetic p-type (Ga,Mn)As layer is grown on i-(In,Ga)As quantum well (QW)/n-GaAs so that the degree of spin polarization of holes injected from (Ga,Mn)As into GaAs can be probed by analyzing the polarization of light emitted from the LED structures. The EL polarization as a function of magnetic field exhibits clear hysteresis below the ferromagnetic transition temperature of (Ga,Mn)As, which is the evidence that spin-polarized electrical current is injected into nonmagnetic semiconductor.
KW - Eectroluminescence
KW - Ferromagnetic semiconductors
KW - Spin injection
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U2 - 10.1016/S1386-9477(01)00143-6
DO - 10.1016/S1386-9477(01)00143-6
M3 - Article
AN - SCOPUS:0035337608
SN - 1386-9477
VL - 10
SP - 489
EP - 492
JO - Physica E: Low-Dimensional Systems and Nanostructures
JF - Physica E: Low-Dimensional Systems and Nanostructures
IS - 1-3
ER -