Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2007-06-25
Phys. Rev. B 76, 241302(R) (2007)
Physics
Condensed Matter
Strongly Correlated Electrons
As published
Scientific paper
10.1103/PhysRevB.76.241302
We measure the effective mass in a dilute two-dimensional electron system in (111)-silicon by analyzing temperature dependence of the Shubnikov-de Haas oscillations in the low-temperature limit. A strong enhancement of the effective mass with decreasing electron density is observed. The mass renormalization as a function of the interaction parameter r_s is in good agreement with that reported for (100)-silicon, which shows that the relative mass enhancement is system- and disorder-independent being determined by electron-electron interactions only.
Deviatov E. V.
Dolgopolov V. T.
Kapustin A. A.
Kvon Ze Don
Shashkin Alexey
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