Quantum phase transitions in dissipative tunnel junctions

@article{Drewes2003QuantumPT,
  title={Quantum phase transitions in dissipative tunnel junctions},
  author={S. Drewes and Daniel P. Arovas and Scot R. Renn},
  journal={Physical Review B},
  year={2003},
  volume={68}
}
The Ueda-Guinea model of a dissipative tunnel junction is investigated. This model accounts for final-state effects associated with single-electron tunneling. A quantum phase transition emerges, marking a boundary betweeninsulating (Coulomb blockade) and conducting phases. The system is analyzed by large-N techniques, self-consistent harmonic approximation, and Monte Carlo methods. 
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5 Citations

5 Citations

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A.M.L. and P.C. acknowledge support from the Swiss National Science Foundation under MaNEP and Division II. A.M.L. acknowledges support from DARPA QuEST, JQI-NSFPFC. M.A.C. acknowledges the…

References

SHOWING 1-10 OF 33 REFERENCES
Quantum dynamics of tunneling between superconductors
A functional integral formulation is used to treat the quantum dynamics of a microscopic model of a Josephson junction, including the dissipative effects of quasiparticle tunneling. The calculation…
Quantum coherent effects, phase transitions, and the dissipative dynamics of ultra small tunnel junctions
EFFECT OF TUNNELING CONDUCTANCE ON THE COULOMB STAIRCASE
Quantum fluctuations of the charge in the single electron box are investigated. The rounding of the Coulomb staircase caused by virtual electron tunneling is determined by perturbation theory up to…
Zero temperature phase diagram of a small metallic junction
We discuss the phase diagram for a metal tunnel junction with quasiparticle dissipation. We present some evidences of aT=0 phase transition induced by dissipation, by means of Monte Carlo simulation…
ELECTRON-HOLE COHERENCE AND CHARGING EFFECTS IN ULTRASMALL METALLIC GRAINS
We consider a model for electron tunneling between a pair of ultrasmall metallic grains. Under appropriate circumstances, non-equilibrium final state effects can strongly enhance tunneling and…
Quantum shot noise in tunnel junctions
The current and voltage fluctuations in a normal tunnel junction are calculated from microscopic theory. The power spectrum can deviate from the familiar Johnson-Nyquist form when the…
Nonequilibrium effects in transport through quantum dots
Forschungszentrum Karlsruhe, Institut fu¨r Nanotechnologie, 76021 Karlsruhe, Germany(February 1, 2008)The role of non-equilibrium effects in the conductance through quantum dots is investigated.…
Coulomb Blockade Fluctuations in Strongly Coupled Quantum Dots
Quantum fluctuations of the Coulomb blockade are investigated as a function of the coupling to reservoirs in semiconductor quantum dots. We use fluctuations in the distance between peaks DN apart to…
Coulomb blockade at almost perfect transmission.
  • Matveev
  • Physics
    Physical review. B, Condensed matter
  • 1995
TLDR
It is shown that near the points where the dot charge is half-integer the thermodynamic characteristics show a non-analytic behavior identical to that of the two-channel spin-1/2 Kondo model.
Strong Charge Fluctuations in the Single-Electron Box: A Quantum Monte Carlo Analysis
Path-integral Monte Carlo simulations have been employed to study strong electron tunneling in the single-electron box (a small metallic island coupled to an electrode by a tunnel junction). Results…
...
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