نتایج جستجو برای: landauer buttiker formalism

تعداد نتایج: 36242  

Journal: :Journal of Physics A 2023

Abstract We study transport in the free fermionic one-dimensional systems subjected to arbitrary local potentials. The bias needed for is modeled by initial highly non-equilibrium distribution where only half of system populated. Additionally that, potential also suddenly changed when starts. For such a quench protocol we compute Full Counting Statistics (FCS) number particles initially empty p...

Journal: :Crystals 2021

We report theoretical studies based on density functional theory within spin-orbit coupling to explore electronic structures, lattice dynamical properties of ZrSbTe and HfSbTe. With spin−orbit included, our findings reveal that HfSbTe exhibit a semiconducting behavior with narrow indirect band gaps 0.10 eV, 0.15 respectively. Besides, the revealed explored materials antimonide−tellurides are dy...

2008
Shanhui Xiong

The duality in the Chalker-Coddington network model is examined. We are able to write down a duality relation for the edge state transmission coefficient, but only for a specific symmetric Hall geometry. Looking for broader implication of the duality, we calculate the transmission coefficient T in terms of the conductivity σxx and σxy in the diffusive limit. The edge state scattering problem is...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2011
Lian-Ao Wu Dvira Segal

We develop a Born-Oppenheimer-type formalism for the description of quantum thermal transport across hybrid nanoscale objects. Our formalism is suitable for treating heat transfer in the off-resonant regime, where, e.g., the relevant vibrational modes of the interlocated molecule are high relative to typical bath frequencies, and at low temperatures when tunneling effects dominate. A general ex...

شاه طهماسبی, ناصر , میلانی مقدم, حسین , کتابی, سید احمد ,

  Using a tight-binding model and a tranfer-matrix technique, we numerically investigate the effects of the coupling strength, and the length of the molecule on the electronic transmission through a CNT/(single) molecule/CNT system. With trans-polyacetylene (trans-PA) as the molecule sandwiched between two semi-infinite carbon nanotube(CNT), we rely on Landauer formalism as the basis for studyi...

E Mozafari, N Shahtahmasebi, SA Ketabi,

Making use of a generalized Green’s function technique and Landauer formalism, the temperature depended current-voltage (I-V) characteristics of C60 molecule, sandwiched between two metallic electrodes are numerically investigated. In addition, the influence of the electron-phonon coupling strength on the electronic properties of the molecule is studied. The I-V characteristics of the molecule ...

M. Ghanaatshoar V. Fallahi,

The magnetoresistance of a one-dimensional electron gas in a metallic ferromagnetic nanowire containing two atomic-size domain walls has been investigated in the presence of spin-orbit interaction. The magnetoresistance is calculated in the ballistic regime, within the Landauer-Büttiker formalism. It has been demonstrated that the conductance of a magnetic nanowire with double domain walls...

2001
Robert M. Konik

In this work we exploit the integrability of the two-lead Anderson model to compute transport properties of a quantum dot, in and out of equilibrium. Our method combines the properties of integrable scattering together with a Landauer-Buttiker formalism. Although we use integrability, the nature of the problem is such that our results are not generically exact, but must only be considered as ex...

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