Dilute Magnetic Semiconductor: A Review of Theoretical Status
نویسنده
چکیده
Dilute Magnetic semiconductors has been attracting researchers due to their wide range of applications like spintronics devices such as spin-FET, spin-LED, nanoscale integrated magnetic memories & sensors etc. But most of practical applications requires curie temperature for DMS to be around room temperature or more. Hence different studies had been done world-wide for controlling the electrical & magnetic properties of DMS. Zener model has been the basic model for understanding the carrier mediated ferromagnetism & different exchange interactions in the DMS lattice . Based on zener model dependence of Curie temperature on carrier concentration structural defects & impurity parameters has been analyzed. Anomalous Hall effect is also another important property of DMS which has been studied to understand the differences from normal hall effect and their cause.
منابع مشابه
Theory of Hydrogen Complexes in MnxGa1−xAs Dilute Magnetic Semiconductors
Atomic hydrogen diffuses in semiconductor lattices and binds to impurities by forming complexes that can lead to a full neutralization of the impurity effects. In the present paper, the structural, vibrational, electronic and magnetic properties of complexes formed by H in the MnxGa1−xAs (x=0.03) dilute magnetic semiconductor have been investigated by using first-principles DFT-LSD and LDA+U th...
متن کاملTwo Dimensional Systems in Solid State and Surface Physics: Strong Electric and Magnetic Fields Effects
Two-dimensional condensed matter systems provide a fertile ground for the study of strong magnetic and electric field effects. We review the present status of studies in three such systems the electron space-charge layer at the semiconductor surface in a metaloxide-semiconductor (MOS) system, in heterojunction superlattices, and at the surface of liquid helium. In addition, we present the resul...
متن کاملScattering mechanism of nonmagnetic phase on nano diluted magnetic semiconductors (DMS)
This paper shows the scattering mechanism at diluted magneticsemiconductors. The doped magnetic atom produces a scattering potential due to becoupled of itinerant carrier spin of host material with magnetic momentum of the dopedmagnetic atom. Formulas of scattering event were rewritten by the plane waveexpansion and then the electron mobility of DMS was calculated. Calculations showKondo effect...
متن کاملSynchronous Spatial Oscillation of Electron- and Mn-Spin Polarizations in Dilute-Magnetic-Semiconductor Quantum Wells under Spin–Orbit Effective Magnetic Fields
متن کامل
Novel Dilute Bismide, Epitaxy, Physical Properties and Device Application
Dilute bismide in which a small amount of bismuth is incorporated to host III-Vs is the least studied III-V compound semiconductor and has received steadily increasing attention since 2000. In this paper, we review theoretical predictions of physical properties of bismide alloys, epitaxial growth of bismide thin films and nanostructures, surface, structural, electric, transport and optic proper...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2014