PHYSICAL REVIEW B 92, 045125 (2015)

ISSN: 1098-0121, SCI

Protection of a non-Fermi liquid by spin-orbit interaction

T. K. T. Nguyen and M. N. Kiselev

We showthat a thermoelectric transport through a quantum dot–single-mode quantum point contact nanodevice demonstrating pronounced fingerprints of nonFermi liquid (NFL) behavior in the absence of external magnetic field is protected from magnetic field NFL destruction by strong spin-orbit interaction (SOI). The mechanism of protection is associated with the appearance of additional scattering processes due to lack of spin conservation in the presence of both SOI and small Zeeman field. The interplay between in-plane magnetic field and SOI is controlled by the angle between B and BSOI. We predict strong dependence of the thermoelectric coefficients on the orientation of the magnetic field and discuss a window of parameters for experimental observation of NFL effects.

DOI: 10.1103/PhysRevB.92.045125

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