Compressibility of a two-dimensional electron gas in a parallel magnetic field

The thermodynamic compressibility of a two-dimensional electron system in the presence of an in-plane magnetic field is calculated. We use accurate correlation energy results from quantum Monte Carlo simulations to construct the ground state energy and obtain the critical magnetic field B c required...

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Bibliographic Details
Published inSolid state communications Vol. 144; no. 12; pp. 521 - 523
Main Authors Subaşı, A.L., Tanatar, B.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.12.2007
Subjects
A. Two-dimensional electron systems
D. Compressibility
71.10.Ca
05.70.Ce
A. Two-dimensional electron systems
D. Compressibility
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Summary:The thermodynamic compressibility of a two-dimensional electron system in the presence of an in-plane magnetic field is calculated. We use accurate correlation energy results from quantum Monte Carlo simulations to construct the ground state energy and obtain the critical magnetic field B c required to fully spin polarize the system. Inverse compressibility as a function of density shows a kink-like behavior in the presence of an applied magnetic field, which can be identified as B c . Our calculations suggest an alternative approach to transport measurements of determining full spin polarization.
ISSN:0038-1098
1879-2766
DOI:10.1016/j.ssc.2007.03.056