Temperature-dependent theory of tunneling in the fractional quantum Hall effect

Mon, 31 Jul 2006 22:00:00 GMT

Temperature-dependent theory of tunneling in the fractional quantum Hall effect D'Agosta, Roberto; Vignale, Giovanni; Raimondi, Roberto 2006-08 Physica E: Low-dimensional Systems and Nanostructures 34 199-202 Recent experiments have studied the tunneling current between two edges of the same fractional quantum Hall liquid as a function of temperature and voltage. The experimental findings for low temperatures are at odds with the model where the edges are described as chiral Luttinger liquids, while the data at high temperatures are quite consistent with the same model. Here, we argue that a temperature dependence of the tunneling amplitude, not foreseen in previous works, can explain this discrepancy.

Temperature Dependence of the Tunneling Amplitude between Quantum Hall Edges

Mon, 28 Feb 2005 23:00:00 GMT

Temperature Dependence of the Tunneling Amplitude between Quantum Hall Edges D'Agosta, Roberto; Vignale, Giovanni; Raimondi, Roberto 2005-03-01 Physical Review Letters 94 086801 Recent experiments have studied the tunneling current between the edges of a fractional quantum Hall liquid as a function of temperature and voltage. The results of the experiment are puzzling because at "high" temperature (600–900 mK) the behavior of the tunneling conductance is consistent with the theory of tunneling between chiral Luttinger liquids, but at low temperature it strongly deviates from that prediction dropping to zero with decreasing temperature. In this Letter we suggest a possible explanation of this behavior in terms of the strong temperature dependence of the tunneling amplitude.

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Temperature-dependent theory of tunneling in the fractional quantum Hall effect

Temperature Dependence of the Tunneling Amplitude between Quantum Hall Edges