Zobrazeno 1 - 10
of 59
pro vyhledávání: '"Gupta, B. C."'
Conductance Quantization in a Periodically Modulated Quantum Channel: backscattering and mode mixing
It is known that the conductance of a quantum point contact is quantized in units of $2e^2/h$ and this quantization is destroyed by a non-adiabatic scatterer in the point contact, due to backscattering. Recently, it was shown [Phys. Rev. Lett. 71, 13
Externí odkaz:
http://arxiv.org/abs/cond-mat/9709276
We investigate the effect of a nondegenerate quadratic nonlinear dimeric impurity on the formation of stationary localized states in one dimensional systems. We also consider the formation of stationary localized states in a fully nonlinear system wh
Externí odkaz:
http://arxiv.org/abs/cond-mat/9707037
Autor:
Kundu, K., Gupta, B. C.
We study the formation of stationary localized states using the discrete nonlinear Schr\"{o}dinger equation in a Cayley tree with connectivity $K$. Two cases, namely, a dimeric power law nonlinear impurity and a fully nonlinear system are considered.
Externí odkaz:
http://arxiv.org/abs/cond-mat/9705150
Dynamics of an electron in finite and infinite one dimensional systems in presence of electric field
Autor:
Gupta, B. C., Sreeram, P. A.
We study,numerically, the dynamical behavior of an electron in a two site nonlinear system driven by dc and ac electric field separately. We also study, numerically, the effect of electric field on single static impurity and antidimeric dynamical imp
Externí odkaz:
http://arxiv.org/abs/cond-mat/9705003
Autor:
Gupta, B. C., Kundu, K.
The formation of Stationary Localized states due to a nonlinear dimeric impurity embedded in a perfect 1-d chain is studied here using the appropriate Discrete Nonlinear Schr$\ddot{o}$dinger Equation. Furthermore, the nonlinearity has the form, $\chi
Externí odkaz:
http://arxiv.org/abs/cond-mat/9610150
Autor:
Gupta, B. C., Kundu, K.
The Discrete Nonlinear Schr$\ddot{o}$dinger Equation is used to study the formation of stationary localized states due to a single nonlinear impurity in a Caley tree and a dimeric nonlinear impurity in the one dimensional system. The rotational nonli
Externí odkaz:
http://arxiv.org/abs/cond-mat/9606125
It is known that differential magnetoconductance of a normal metal loop connected to reservoirs by ideal wires is always negative when an electron travels as an evanescent modes in the loop. This is in contrast to the fact that the magnetoconductance
Externí odkaz:
http://arxiv.org/abs/cond-mat/9603067
Autor:
Gupta, B. C., Basch, Paul F.
Publikováno v:
The Journal of Parasitology, 1987 Jun 01. 73(3), 481-486.
Externí odkaz:
https://www.jstor.org/stable/3282125
Autor:
Tracy, D. S., Gupta, B. C.
Publikováno v:
The Annals of Statistics, 1974 Jul 01. 2(4), 837-844.
Externí odkaz:
https://www.jstor.org/stable/2958423
Autor:
Patel, S. M., Gupta, B. C.
Publikováno v:
Proceedings of the American Mathematical Society, 1975 Dec 01. 53(2), 341-346.
Externí odkaz:
https://www.jstor.org/stable/2040010