OPEN QUANTUM SYSTEMS

    In the recent years, the evolution of the material science has enabled the manipulation of systems of nanometric scale. This triggered an impressive development of new areas of very promising technological applications, like molecular electronics. The fundamental component in the devices of interest is a system containing a small number of particles and degrees of freedom. It can be a real molecule or, as in the case of quantum dots, a set of confined electrons that behaves like a molecule.
    The key feature of these systems is that their physical behavior is ruled by the laws of quantum mechanics. In the configurations of potential applications they are, however, not isolated but in contact with electrodes or other degrees of freedom with which they exchange particles and/or energy. Furthermore, in the conditions of practical interest, these devices operate under the influence of external fields, which drive them out-off equilibrium. The scenario is very challenging from the theoretical point of view, as the basic models and treatments must deal with many-body nonequilibrium systems in interaction with dissipative environments.
    I am interested in:

  • Mesoscopic systems driven by external time-dependent fields.

  • Molecular transistors.

  • Linear molecules excited by ultrashort laser pulses.

    Recent publications:
  • Stationary transport in mesoscopic hybrid structures with contacts to superconducting and normal wires: A Green's function approach for multiterminal setups.
    Liliana Arrachea
    Phys. Rev. B (2009)
  • dc four-point resistance of a double-barrier quantum pump
    Federico Foieri, Liliana Arrachea, and María José Sánchez
    Phys. Rev. B 79, 085430 (2009)
  • Voltage profile and four terminal resistance of an interacting quantum wire
    L. Arrachea, Carlos Naon, Mariano Salvay
    Phys. Rev. B 77, 233105 (2008). cond-mat/0711.3638
  • Quantum pump effect in one-dimensional systems of Dirac fermions
    L. Arrachea, Carlos Naon, Mariano Salvay
    Physical Review B, vol. 76, 165401 (2007). cond-mat/0704.2329
  • Multifloquet to single electronic channel transition in the transport properties of a resistive 1D disordered ring
    Federico Foieri, Liliana Arrachea, Maria Jose Sanchez
    Physical Review Letters 99, 266601 (2007). cond-mat/0707.2785
  • Non adiabatic features electron pumping through a quantum dot in the Kondo regime
    Liliana Arrachea, Alfredo Levy Yeyati and Alvaro Martin-Rodero
    Phys. Rev. B 77, 165326 (2008). cond-mat/0711.4200
  • Effect of temperature and bias voltage on the conductance distribution of 1D-disordered wires with dirty contacts
    Federico Foieri, Maria Jose Sanchez, Liliana Arrachea and Victor Gopar.
    Physica B 398, 450-454 (2007).
  • Symmetries and transport properties of an electronic quantum pump with biharmonic driving
    Liliana Arrachea
    Physica B 398, 450-454 (2007).
  • Heat production and energy balance in nanoengines driven by time-dependent fields
    Liliana Arrachea, Michael Moskalets and Luis Martin-Moreno
    Physical Review B 75, 245420 (2007)
  • Exact Green's function renormalization approach to spectral properties of open quantum systems driven by harmonically time-dependent fields
    Liliana Arrachea
    Physical Review B 75, 035319 (2007)
  • Relation between scattering-matrix and Keldysh formalisms for quantum transport driven by time-periodic fields
    Liliana Arrachea and Michael Moskalets
    Physical Review B 74, 245322 (2006)
  • Conductance distributions of one-dimensional disordered wires at finite temperature and bias voltage
    Federico Foieri, Maria Jose©Sanchez, Liliana Arrachea, and Victor A. Gopar
    Physical Review B 74, 165313 (2006)
  • Symmetry and environment effects on rectification mechanisms in quantum pumps
    Liliana Arrachea
    Physical Review B (R) 72, 121306 (2005) and (E) 72, 249904 (2005).
  • A Green-function approach to transport phenomena in quantum pumps
    Liliana Arrachea
    Physical Review B, 72, 125349 (2005).
  • Study of a fluctuation-dissipation relation of a dissipative driven mesoscopic system.
    Liliana Arrachea and Leticia F. Cugliandolo.
    Europhysics Letters 70, 642 (2005).
  • Quantum Monte Carlo method for models of molecular nanodevices.
    Liliana Arrachea and Marcelo Rozenberg.
    Physical Review B (RC) 72, 041301 (2005).
  • dc-Response of a Dissipative Driven Mesoscopic Ring.
    Liliana Arrachea.
    Phys. Rev. B 70, 155407 (2004).
  • Electron transport in a mesoscopic metallic wire connected to leads.
    Liliana Arrachea.
    European Physical Journal B 36, 253 (2003).
  • Microscopic theory of vibronic dynamics in linear polyenes.
    Liliana Arrachea, A. A. Aligia and G. Santoro.
    Physical Review B 67, 134307 (2003).
  • Current oscillations in a metallic ring threaded by a time-dependent magnetic flux.
    Liliana Arrachea.
    Physical Review B 66, 045315 (2002).