Zobrazeno 1 - 10
of 72
pro vyhledávání: '"Doiron, C."'
Publikováno v:
Phys. Rev. B 79, 134511 (2009) [18 pages]
We investigate a superconducting single-electron transistor capacitively coupled to a nanomechanical oscillator and focus on the double Josephson quasiparticle resonance. The existence of two coherent Cooper pair tunneling events is shown to lead to
Externí odkaz:
http://arxiv.org/abs/0810.5718
Publikováno v:
Phys. Rev. Lett. 100, 027202 (2008)
We propose a way to measure the momentum p of a nanomechanical oscillator. The p-detector is based on two tunnel junctions in a Aharonov-Bohm-type setup. One of the tunneling amplitudes depends on the motion of the oscillator, the other one not. Alth
Externí odkaz:
http://arxiv.org/abs/0707.2709
Publikováno v:
R. Cote, M.-A. Lemonde, C. B. Doiron, and A. M. Ettouhami, Phys. Rev. B 77, 115303 (2008)
In a quantizing magnetic field, the two-dimensional electron (2DEG) gas has a rich phase diagram with broken translational symmetry phases such as Wigner, bubble, and stripe crystals. In this paper, we derive a method to get the dynamical matrix of t
Externí odkaz:
http://arxiv.org/abs/0706.1488
Publikováno v:
Phys. Rev. B 76, 195312 (2007)
We consider position measurements using the cross-correlated output of two tunnel junction position detectors. Using a fully quantum treatment, we calculate the equation of motion for the density matrix of the coupled detector-detector-mechanical osc
Externí odkaz:
http://arxiv.org/abs/0705.2334
Publikováno v:
Phys. Rev. B 76, 161306(R) (2007)
We study fluctuations and topological melting transitions of quantum Hall stripes near half-filling of intermediate Landau levels. Taking the stripe state to be an anisotropic Wigner crystal (AWC) allows us to identify the quantum Hall nematic state
Externí odkaz:
http://arxiv.org/abs/cond-mat/0611638
Publikováno v:
Phys. Rev. B 74, 205336 (2006)
We investigate electrical transport through a single-electron transistor coupled to a nanomechanical oscillator. Using a combination of a master-equation approach and a numerical Monte Carlo method, we calculate the average current and the current no
Externí odkaz:
http://arxiv.org/abs/cond-mat/0610358
Publikováno v:
Phys. Rev. B 72, 115336 (2005)
In some range of interlayer distances, the ground state of the two-dimensional electron gas at filling factor nu =4N+1 with N=0,1,2,... is a coherent stripe phase in the Hartree-Fock approximation. This phase has one-dimensional coherent channels tha
Externí odkaz:
http://arxiv.org/abs/cond-mat/0507062
Publikováno v:
Phys. Rev. Lett. 96, 196802 (2006)
We study the collective states formed by two-dimensional electrons in Landau levels of index $n\ge 2$ near half-filling. By numerically solving the self-consistent Hartree-Fock (HF) equations for a set of oblique two-dimensional lattices, we find tha
Externí odkaz:
http://arxiv.org/abs/cond-mat/0506459
Publikováno v:
Phys. Rev. B 68, 155327 (2003)
In Landau levels N > 1, the ground state of the two-dimensional electron gas (2DEG) in a perpendicular magnetic field evolves from a Wigner crystal for small filling of the partially filled Landau level, into a succession of bubble states with increa
Externí odkaz:
http://arxiv.org/abs/cond-mat/0304412
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