منابع مشابه
Heat transport in mesoscopic systems
Phonon heat transport in mesoscopic systems is investigated using methods analogous to the Landauer description of electrical conductance. A “universal heat conductance” expression that depends on the properties of the conducting pathway only through the mode cutoff frequencies is derived. Corrections due to reflections at the junction between the thermal body and the conducting bridge are foun...
متن کاملTime-dependent Transport in Interacting Mesoscopic Systems
The study of mesoscopic phenomena is one of the most active areas of today’s solid state physics. One can observe signatures of mesoscopics in a large number of different physical systems, and a comprehensive review would not be appropriate in the present context. The present volume focuses on Kadanoff– Baym–Keldysh Green functions, and consequently we restrict ourselves to certain examples whi...
متن کاملMesoscopic photon heat transistor.
We show that the heat transport between two bodies, mediated by electromagnetic fluctuations, can be controlled with an intermediate quantum circuit--leading to the device concept of a mesoscopic photon heat transistor (MPHT). Our theoretical analysis is based on a novel Meir-Wingreen-Landauer-type of conductance formula, which gives the photonic heat current through an arbitrary circuit elemen...
متن کاملTime-dependent transport in interacting and non-interacting mesoscopic systems
We consider a mesoscopic region coupled to two leads under the influence of external time-dependent voltages. The time dependence is coupled to source and drain contacts, the gates controlling the tunnel-barrier heights, or to the gates which define the mesoscopic region. We derive, with the Keldysh nonequilibrium Green function technique, a formal expression for the fully nonlinear, time-depen...
متن کاملQuantum transport in mesoscopic systems and the measurement problem
We study noninvasive measurement of stationary currents in mesoscopic systems. It is shown that the measurement process is fully described by the Schrödinger equation without any additional reduction postulate and without the introduction of an observer. Nevertheless the possibility of observing a particular state out of coherent superposition leads to collapse of the wave function, even though...
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ژورنال
عنوان ژورنال: Superlattices and Microstructures
سال: 1998
ISSN: 0749-6036
DOI: 10.1006/spmi.1997.0561