Suppression of Coulomb exchange energy in quasi-two-dimensional hole systems

Abstract

We have calculated the exchange-energy contribution to the total energy of quasi-two-dimensional hole systems realized by a hard-wall quantum-well confinement of valence-band states in typical semiconductors. The magnitude of the exchange energy turns out to be suppressed from the value expected for analogous conduction-band systems whenever the mixing between heavy-hole and light-hole components is strong. Our results are obtained using a very general formalism for calculating the exchange energy of many-particle systems where single-particle states are spinors. We have applied this formalism to obtain analytical results for spin-3/2 hole systems in limiting cases.

9 pages, 3 figures, RevTex 4.1, v2: minor changes

References in corpus (6)

• Plasmon mass and Drude weight in strongly spin-orbit-coupled 2D electron gases
• Anomalous Spin Polarization of GaAs Two-Dimensional Hole Systems
• Theoretical study of interacting hole gas in p-doped bulk III-V semiconductors
• Exchange energy and generalized polarization in the presence of spin-orbit coupling in two dimensions
• Plasmons in spin-orbit coupled two-dimensional hole gas systems
• Carrier-density-controlled anisotropic spin susceptibility of two-dimensional hole systems

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