Ferromagnetic semiconductor heterostructures

Semiconductor nanowire heterostructures.

Recent progress on the synthesis and characterization of semiconductor nanowire heterostructures is reviewed. We describe a general method for heterostructure synthesis based on chemical vapour deposition and the vapour-liquid-solid growth of crystalline semiconducting nanowires. We then examine examples of nanowire heterostructures for which physical properties have been measured, considering ...

Van der Waals engineering of ferromagnetic semiconductor heterostructures for spin and valleytronics

The integration of magnetic material with semiconductors has been fertile ground for fundamental science as well as of great practical interest toward the seamless integration of information processing and storage. We create van der Waals heterostructures formed by an ultrathin ferromagnetic semiconductor CrI3 and a monolayer of WSe2. We observe unprecedented control of the spin and valley pseu...

Josephson Current in a Ferromagnetic Semiconductor/Semiconductor/Ferromagnetic Semiconductor Junction with Superconducting Contacts

Macroscopic Models for Semiconductor Heterostructures

The semiconductor Boltzmann equation is considered within a material with a space-dependent band characteristic. Its uid limit under strong elastic collisions leads to the so-called Spherical Harmonics Expansion (SHE) model. For this model, the innuence of smoothly space-dependent or abruptly dis-continuous band characteristics is analyzed. For the latter case which occurs at heterojunction int...

Slow light in semiconductor heterostructures

This paper presents an overview of slow light in semiconductor heterostructures. The focus of this paper is to provide a unified framework to summarize and compare various physical mechanisms of slow light proposed and demonstrated in the past few years. We expand and generalize the discussions on fundamental limitation of slow light and the delay–bandwidth product trade-off to include gain sys...