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11 papers
Breakdown of the integer and fractional quantum Hall states in a quantum point contact
C. Dillard, X. Lin, M. A. Kastner +2
The integer and fractional quantum Hall states are known to break down at high dc bias, exhibiting deviation from the ideal incompressible behavior. We measure breakdown of the ν=…
Measurements of quasi-particle tunneling in the nu = 5/2 fractional quantum Hall state
X. Lin, C. Dillard, M. A. Kastner +2
Some models of the 5/2 fractional quantum Hall state predict that the quasi-particles, which carry the charge, have non-Abelian statistics: exchange of two quasi-particles changes…
Quasiparticle Tunneling in the Fractional Quantum Hall State at ν= 5/2
Iuliana P. Radu, J. B. Miller, C. M. Marcus +3
Theory predicts that quasiparticle tunneling between the counter-propagating edges in a fractional quantum Hall state can be used to measure the effective quasiparticle charge e* a…
Energy Dependent Tunneling in a Quantum Dot
K. MacLean, S. Amasha, Iuliana P. Radu +4
We present measurements of the rates for an electron to tunnel on and off a quantum dot, obtained using a quantum point contact charge sensor. The tunnel rates show exponential dep…
Measurements of Kondo and spin splitting in single-electron transistors
A. Kogan, S. Amasha, D. Goldhaber-Gordon +3
We measure the spin splitting in a magnetic field of localized states in single-electron transistors using a new method, inelastic spin-flip cotunneling. Because it involves on…
Singlet-triplet transition in a single-electron transistor at zero magnetic field
A. Kogan, G. Granger, M. A. Kastner +2
We report sharp peaks in the differential conductance of a single-electron transistor (SET) at low temperature, for gate voltages at which charge fluctuations are suppressed. For o…