Temperature dependent effective mass renormalization in 2D electron systems

Details Temperature dependent effective mass renormalization in 2D electron systems Temperature dependent effective mass renormalization in 2D electron systems

2003-03-18

arxiv.org/abs/cond-mat/0303363v2

Phys. Rev. B 69, 125334 (2004)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

This is a revised and extended version. Accepted for publishing by PRB

Scientific paper

10.1103/PhysRevB.69.125334

We calculate, as a function of temperature and density, the electron-electron interaction induced quasiparticle effective mass renormalization in 2D electron systems within the leading-order dynamically screened Coulomb interaction expansion. We find an unexpected nonanalyticity and nonmonotonicity in the temperature dependent effective mass with the renormalized mass linearly increasing with temperature at low temperatures for all densities.

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