Semi-classical limits in a crystal with exterior potentials and effective mass theorems

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Abstract

We study the semi-classical limit of the dynamics of electrons in a crystal under the influence of an external electric field. Two small parameters e and h are introduced. They are respectively related to the scaled lattice length and the scaled Planck constant. When ε/h and h go to zero, we prove that in the limit process the dynamics of electrons is described by a Vlasov equation. When h is fixed and ε tends to zero, the dynamics is governed by an effective Schrödinger equation. In both cases, the mass of electrons is replaced by a matrix, the so-called effective mass.

Original languageEnglish (US)
Pages (from-to)1897-1918
Number of pages22
JournalCommunications in Partial Differential Equations
Volume21
Issue number11-12
StatePublished - 1996

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Semiclassical Limit
Effective Mass
Crystal
Electron
Crystals
Electrons
Theorem
Vlasov equation
Vlasov Equation
Zero
Small Parameter
External Field
Two Parameters
Electric Field
Electric fields
Tend

ASJC Scopus subject areas

  • Mathematics(all)
  • Analysis
  • Applied Mathematics

Cite this

Semi-classical limits in a crystal with exterior potentials and effective mass theorems. / Poupaud, F.; Ringhofer, Christian.

In: Communications in Partial Differential Equations, Vol. 21, No. 11-12, 1996, p. 1897-1918.

Research output: Contribution to journalArticle

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