Spin injection in the multiple quantum-well LED structure with the Fe/AlO (x) injector

A spin-injection/-detection device has been fabricated based on the multiple quantum well light emitting diode (LED) structure. It is found that only a broad electroluminescence (EL) peak of a full width at half maximum of 8.6 nm appears at the wavelength of 801 nm in EL spectra with a circular luminescence polarization degree of 18%, despite PL spectra always show three well resolved peaks. The kinetic energy gained by injected electrons and holes in their drift along opposite directions broadens the EL peak, and makes three EL peaks converge together. The same process also destroys the injected spin polarization of electrons mainly dominated by the Bir-Aronov-Pikus spin relaxing mechanism.

Submitted by 阎军 (yanj@red.semi.ac.cn) on 2010-05-04T14:07:48Z No. of bitstreams: 1 Spin injection in the multiple quantum-well LED structure with the FeAlO (x) injector.pdf: 505730 bytes, checksum: 6606e0a5595161d5ee6c42d197522235 (MD5)

Approved for entry into archive by 阎军(yanj@red.semi.ac.cn) on 2010-05-04T14:12:14Z (GMT) No. of bitstreams: 1 Spin injection in the multiple quantum-well LED structure with the FeAlO (x) injector.pdf: 505730 bytes, checksum: 6606e0a5595161d5ee6c42d197522235 (MD5)

Made available in DSpace on 2010-05-04T14:12:14Z (GMT). No. of bitstreams: 1 Spin injection in the multiple quantum-well LED structure with the FeAlO (x) injector.pdf: 505730 bytes, checksum: 6606e0a5595161d5ee6c42d197522235 (MD5) Previous issue date: 2010

National Basic Research Program of China 2006CB932801 2007CB924903 2007CB924904 ;Chinese Academy of Sciences KJCX.YW.W09; National Natural Science Foundation of China 60836002 10674130 60521001

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National Basic Research Program of China 2006CB932801 2007CB924903 2007CB924904 ;Chinese Academy of Sciences KJCX.YW.W09; National Natural Science Foundation of China 60836002 10674130 60521001