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Effect of Electron-Electron Scatteri...

The University of Akron., Physics.

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Effect of Electron-Electron Scattering on Linear Conductivity for Graphene-Like Band Structure.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Effect of Electron-Electron Scattering on Linear Conductivity for Graphene-Like Band Structure./
作者:	Memarian, Fereshteh.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2018,
面頁冊數:	70 p.
附註:	Source: Masters Abstracts International, Volume: 58-02.
Contained By:	Masters Abstracts International58-02(E).
標題:	Physics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=11005248
ISBN:	9780438589674

Effect of Electron-Electron Scattering on Linear Conductivity for Graphene-Like Band Structure.
Memarian, Fereshteh.

Effect of Electron-Electron Scattering on Linear Conductivity for Graphene-Like Band Structure. - Ann Arbor : ProQuest Dissertations & Theses, 2018 - 70 p.

Source: Masters Abstracts International, Volume: 58-02.

Thesis (M.S.)--The University of Akron, 2018.

The flow of current in response to an electric field, or conductivity, of materials, depends on properties such as the electron density, band structure of the material, temperature and presence of external fields. For this work, we assume the presence of conduction electrons in a perfect hexagonal crystalline lattice. The sample experiences a small, uniform in-plane electric field and a perpendicular magnetic field. An external electric field accelerates electrons, but scattering causes them to lose energy and momentum.

ISBN: 9780438589674Subjects--Topical Terms:

516296
Physics.

Effect of Electron-Electron Scattering on Linear Conductivity for Graphene-Like Band Structure.
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520 $a The flow of current in response to an electric field, or conductivity, of materials, depends on properties such as the electron density, band structure of the material, temperature and presence of external fields. For this work, we assume the presence of conduction electrons in a perfect hexagonal crystalline lattice. The sample experiences a small, uniform in-plane electric field and a perpendicular magnetic field. An external electric field accelerates electrons, but scattering causes them to lose energy and momentum.
520 $a Electrons interact with other electrons and collective lattice vibrations, via electron-electron and electron-phonon scattering. We study this phenomenon using the Boltzmann transport equation. In graphene-like materials with linear bands, for a model with a constant electron-phonon relaxation time, the conductivity decreases as the temperature is increased from absolute zero. Furthermore, in linear band materials, the electron-electron interaction decreases the conductivity.
520 $a This is in contrast to parabolic band materials with constant electron-phonon relaxation time, where the conductivity does not depend on temperature or the electron-electron scattering rate. We also calculate the magneto-conductance for linear band materials in the absence of electron-electron scattering.
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