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Spin injection using Diluted Magnetic Semiconductor

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1 Author(s)
Barmawi, M. ; ITB, Laboratory for Electronic Material Physics

One of the key problem in spintronics is the spin injection into semiconductors. There are several methods that had been proposed to implement this spin injection, among others are using the tunneling effect and using Diluted Magnetic Semiconductors (DMS). In this talk we review the work at ITB, Laboratory for Electronic Materials Physics using the DMS. We review the depositions of DMS in our Lab. We concentrate on the DMS having Tc higher than the room temperature to avoid the use of the required cryogenics. We had developed the deposition of GaN:Mn and the TiO2:Co The deposition GaN:Mn is carried out using the Plasma Assisted MOCVD (PA-MOCVD). The deposition of TiO2:Co is performed in a thermal MOCVD system The magnetic properties had been confirmed. The spin injection into GaN using GaN:Mn had not been verified by experiment. However for TiO2:Co, an experiment using the Hanle effect has produced some qualitative experimental evidence for spin injection, using this DMS at room temperature.

Published in:

Instrumentation, Communications, Information Technology, and Biomedical Engineering (ICICI-BME), 2009 International Conference on

Date of Conference:

23-25 Nov. 2009

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