6533b851fe1ef96bd12a8edd
RESEARCH PRODUCT
Hot electron noise in n-type GaAs in crossed electric and magnetic fields
Francesco CiccarelloMichelangelo Zarconesubject
PhysicsRange (particle radiation)Condensed matter physicsScatteringMonte Carlo methodGeneral Physics and AstronomySpectral densityMonte Carlo methods noiseCondensed Matter::Mesoscopic Systems and Quantum Hall EffectMagnetic fieldGallium arsenideBoltzmann equationchemistry.chemical_compoundchemistryElectric fieldNoise (radio)description
A Monte Carlo analysis of hot electron transport properties of bulk \textit{n}-type GaAs in crossed electric and magnetic fields is presented. %Magnetic field strengths allowing negligible quantum effects in the electron dynamics during free flights are considered. Effects due to the nonparabolicity of bands are properly taken into account by means of a local parabolic approximation. Stochastic properties of electron transport are analyzed by computing the velocity auto-correlation function and the spectral density of fluctuations. It is shown how the presence of the magnetic field is able to deeply modify electron noise up to high electric field strengths. The resulting features of the velocity auto-correlation function as well as of the spectrum of fluctuations reveal signatures of nonparabolicity and nonlinearity.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2006-06-01 | Journal of Applied Physics |