Advances in wide bandgap materials for semiconductor spintronics

Advances in wide bandgap materials for semiconductor spintronics

Existing semiconductor electronic and photonic devices utilize the charge on electrons and holes in order to perform their specific functionality such as signal processing or light emission. The relatively new field of semiconductor spintronics seeks, in addition, to exploit the spin of charge carriers in new generations of transistors, lasers and integrated magnetic sensors. The ability to con...

Ultrafast Spectroscopy of Wide Bandgap Semiconductor Nanostructures

Group III-nitrides have been considered a promising choice for the realization of optoelectronic devices since 1970. Since the first demonstration of the high-brightness blue lightemitting diodes (LEDs) by Shuji Nakamura and coworkers, the fabrication of highly efficient white LEDs has passed successful developments. A serious physical issue still remained, which prevents their use for high pow...

Semiconductor Spintronics

We review recent progress made in the field of semiconductor spintronics, a branch of semiconductor electronics where both charge and spin degrees of freedom play an important role in realizing unique functionalities. We first describe the new spin-dependent phenomena found in semiconductors including carrier-induced ferromagnetism in III–V compounds, followed by an account of our current under...

Session D: Semiconductor Spintronics

Wide Bandgap Semiconductor Devices and MMICs: A DARPA Perspective

This paper reports on the recent successful completion of Phase I of DARPA’s Wide Bandgap Semiconductor Technology Initiative (WBGSTI). Phase I results are given for semi-insulating substrates and epitaxial growth, and a description and expectations for the upcoming Phases II and III are also provided. INTRODUCTION Wide bandgap devices and MMICs with high power density, high power added efficie...