FERMI-LIQUID EFFECTS IN TRANSRESISTIVITY IN THE QUANTUM HALL DOUBLE LAYERS NEAR \nu= 1/2
Zimbovskaya N.A.

Received: November 24, 2003

PACS: 71.27.+a, 73.43.-f

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We present theoretical studies of the temperature and magnetic field dependences of the Coulomb drag transresistivity between two parallel layers of two-dimensional electron gases in the quantum Hall regime near half filling of the lowest Landau level. It is shown that Fermi-liquid interactions between the relevant quasiparticles can significantly affect the transresistivity, providing its independence from the interlayer spacing for spacings that take values reported in the experiments. The obtained results agree with the experimental evidence.