Diffusion thermopower at even-denominator fractions

Article

关键词: DISORDERED ELECTRONIC SYSTEMS;    QUANTIZING MAGNETIC-FIELD;    THERMOELECTRIC-POWER;    LANDAU-LEVEL;    COMPOSITE FERMIONS;    GAS;    SCATTERING;    LIQUID;    MASS;   

DOI  :  10.1103/PhysRevB.54.R14317

来源: SCIE

【 摘 要 】

We compute the electron diffusion thermopower at compressible quantum Hall states corresponding to even-denominator fractions in the framework of the composite-fermion approach. It is shown that the deviation from the linear low-temperature behavior of the thermopower is dominated by the logarithmic temperature corrections to the conductivity and not to the thermoelectric coefficient, although such terms are present in both quantities. The enhanced magnitude of this effect compared to the zero-field case may allow its observation with the existing experimental techniques.

【 授权许可】

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