Electrical conductance of molecular wires
نویسندگان
چکیده
منابع مشابه
Thermal conductance through molecular wires
We consider phononic heat transport through molecular chains connecting two thermal reservoirs. For relatively short molecules at normal temperatures we find, using classical stochastic simulations, that heat conduction is dominated by the harmonic part of the molecular force-field. We develop a general theory for the heat conduction through harmonic chains in three-dimensions. Our approach use...
متن کاملTuning the electrical conductance of metalloporphyrin supramolecular wires
In contrast with conventional single-molecule junctions, in which the current flows parallel to the long axis or plane of a molecule, we investigate the transport properties of M(II)-5,15-diphenylporphyrin (M-DPP) single-molecule junctions (M=Co, Ni, Cu, or Zn divalent metal ions), in which the current flows perpendicular to the plane of the porphyrin. Novel STM-based conductance measurements c...
متن کاملConductance of an ensemble of molecular wires: a statistical analysis.
We report on a first principles analysis of quantum transport through molecular wires made of 4,4'bipyridine and 6-alkanedithiol contacted by Au electrodes. We investigate how charge transport is altered due to small structure changes at the molecule-electrode contacts. These changes include distance between the molecule and the contact, extra metal atoms at the Au surface, binding sites, molec...
متن کاملControlling the conductance of molecular wires by defect engineering
Understanding the charge transport mechanisms in nanoscale structures is essential for the development of molecular electronic devices. Charge transport through one-dimensional (1D) molecular systems connected between two contacts is influenced by several parameters, such as the electronic structure of the molecule and the presence of disorder and defects. In this work, we have modeled 1D molec...
متن کاملConductance in quantum wires by three quantum dots arrays
A noninteracting quantum-dot arrays side coupled to a quantum wire is studied. Transport through the quantum wire is investigated by using a noninteracting Anderson tunneling Hamiltonian. The conductance at zero temperature develops an oscillating band with resonances and antiresonances due to constructive and destructive interference in the ballistic channel, respectively. Moreover, we have fo...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nanotechnology
سال: 1999
ISSN: 0957-4484,1361-6528
DOI: 10.1088/0957-4484/10/3/311