Ultrafast and Gigantic Spin Injection in Semiconductors

Spin Injection into Semiconductors

S 713 FRIDAY AFTERNOON, 8 NOVEMBER 2013 PLAZA BALLROOM F, 1:30 TO 4:30 Session HB SPIN INJECTION INTO SEMICONDUCTORS Georg Schmidt, Chair

Spin injection and accumulation in inhomogeneous semiconductors

We present a study of spin transport in charge and spin inhomogeneous semiconductor systems. In particular, we investigate the propagation of spin-polarized electrons through a boundary between two semiconductor regions with different doping concentrations. We use a theoretical and numerical method, presented in this paper, based on a self-consistent treatment of a two-component version of the ...

Spin Injection into Amorphous Semiconductors

Ultrafast optical spin echo for electron spins in semiconductors.

Spin-based quantum computing and magnetic resonance techniques rely on the ability to measure the coherence time T(2) of a spin system. We report on the experimental implementation of all-optical spin echo to determine the T(2) time of a semiconductor electron-spin system. We use three ultrafast optical pulses to rotate spins an arbitrary angle and measure an echo signal as the time between pul...

Workshop WS2: Spin-Dependent Phenomena for New Device Applications

s of Workshop Presentations Ultrafast and Gigantic Spin Injection in Semiconductor M. Battiato*, K. Held Institute of Solid State Physics, TU Wien, Vienna, 1040, Austria *[email protected] The injection of spin currents in semiconductors is one of the big challenges of spintronics. Motivated by the ultrafast demagnetisation and spin injection into metals, we propose an alternative...