Theoretical investigation of local electron temperature in quantum Hall systems

Yurdasan, NAZLI; AKGÜNGÖR, KADİR; Siddiki, A.; Sokmen, I.

doi:10.1016/j.physe.2012.02.020

Theoretical investigation of local electron temperature in quantum Hall systems

Atıf İçin Kopyala

Yurdasan N., AKGÜNGÖR K., Siddiki A., Sokmen I.

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, cilt.44, sa.7-8, ss.1367-1371, 2012 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 44 Sayı: 7-8
Basım Tarihi: 2012
Doi Numarası: 10.1016/j.physe.2012.02.020
Dergi Adı: PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Sayfa Sayıları: ss.1367-1371
Dokuz Eylül Üniversitesi Adresli: Evet

Özet

In this work we solve thermo-hydrodynamical equations considering a two dimensional electron system in the integer quantum Hall regime, to calculate the spatial distribution of the local electron temperature. We start from the self-consistently calculated electrostatic and electrochemical potentials in equilibrium. Next, by imposing an external current, we investigate the variations of the electron temperature in the linear-response regime. Here a local relation between the electron density and conductivity tensor elements is assumed. Following the Ohm's law we obtain local current densities and by implementing the results of the thermo-hydrodynamical theory, calculate the local electron temperature. We observe that the local electron temperature strongly depends on the formation of compressible and incompressible strips. (c) 2012 Elsevier B.V. All rights reserved.