Friedel oscillations in the presence of transport currents in a nanowire

Article

关键词: CHARGE;    SWITCH;    WIRES;    SPIN;   

DOI  :  10.1103/PhysRevB.76.165419

来源: SCIE

【 摘 要 】

We investigate the Friedel oscillations in a nanowire coupled symmetrically to two macroscopic electrodes of different potentials. We show that the wavelength of the density oscillations monotonically increases with the bias voltage, whereas the amplitude and the spatial decay exponent of the oscillations remain intact. Using the nonequilibrium Keldysh Green functions, we derive an explicit formula that describes voltage dependence of the wavelength of the Friedel oscillations.

【 授权许可】

Free