Two-dimensional electron gas near full polarization
نویسندگان
چکیده
We establish the consistency of the Fermi liquid description and find a relation between the Fermi liquid constants for a two-dimensional electron system near the point of full polarization due to a parallel magnetic field H. Our results enable us to predict connections between different thermodynamic properties of the system. In particular, we find that near the point of full polarization Hc , the thermodynamic compressibility of the system experiences a jump with a subleading (Hc2H) 1/2 dependence on the magnetic field. Also, the magnetization has a cusp with dependence of the type (H2Hc)1(Hc2H) 3/2 at H,Hc .
منابع مشابه
Calculation of Quasi-one-dimensional Interacting Electron Gas Using the Hartree-Fock Method
In this paper, the Hartree-Fock method has been formulated to investigate some of the ground state properties of quasi-one-dimensional interacting electron gas in the presence of the magnetic field. The bare coulomb interaction between electrons has been assumed. For this system, we have also computed some of its thermodynamic and magnetic properties such as the energy, pressure, incompressibil...
متن کاملSpin - Polarization transition in the two dimensional elec - tron gas
– We present a numerical study of magnetic phases of the 2D electron gas near freezing. The calculations are performed by diffusion Monte Carlo in the fixed node approximation. At variance with the 3D case we find no evidence for the stability of a partially polarized phase. With plane wave nodes in the trial function, the polarization transition takes place at rs = 20, whereas the best availab...
متن کاملGiant magneto-oscillations of electric-field-induced spin polarization in a two-dimensional electron gas
We consider a disordered two-dimensional electron gas with spin-orbit coupling placed in a perpendicular magnetic field and calculate the magnitude and direction of the electric-field-induced spin polarization. We find that in strong magnetic fields the polarization becomes an oscillatory function of the magnetic field and that the amplitude of these oscillations is parametrically larger than t...
متن کاملElectron gas dimensionality engineering in AlGaN/GaN high electron mobility transistors using polarization
We propose and demonstrate a two dimensional/three dimensional hybrid channel AlGaN/GaN high electron mobility transistor (HEMT) structure with a flat transconductance profile using polarization-induced channel engineering. A quasi three dimensional electron gas profile with 5–6 nm of vertical channel depth was formed by grading the channel region linearly from GaN to Al0.15Ga0.85 N over 50 Å. ...
متن کاملTwo-dimensional electrochemical model for mixed conductors: a study of ceria
A two-dimensional small bias model has been developed for a patterned metal current collector | mixed oxygen ion and electronic conductor (MIEC) | patterned metal current collector electrochemical cell in a symmetric gas environment. Specifically, we compute the electrochemical potential distributions of oxygen vacancies and electrons in the bulk and near the surface for Pt|Sm0.15Ce0.85O1.925|P...
متن کامل