4 papers
Loss of interference in an Aharonov-Bohm ring
Sandeep K. Joshi, Debendranath Sahoo, A. M. Jayannavar
We study a simple model of dephasing of Aharonov-Bohm oscillations in the transmission of an electron across a mesoscopic ring. A magnetic impurity in one of the arms of the ring c…
Dephasing of Aharonov-Bohm oscillations in a mesoscopic ring with a magnetic impurity
Sandeep K. Joshi, Debendranath Sahoo, A. M. Jayannavar
We present a detailed analysis of the Aharonov-Bohm interference oscillations manifested through transmission of an electron in a mesoscopic ring with a magnetic impurity atom inse…
A study of disordered systems with gain: Stochastic Amplification
Sandeep K. Joshi, A. M. Jayannavar
A study of statistics of transmission and reflection from a random medium with stochastic amplification as opposed to coherent amplification is presented. It is found that the tran…
Quantum Stochastic Absorption
Sandeep K. Joshi, Debendranath Sahoo, A. M. Jayannavar
We report a detailed and systematic study of wave propagation through a stochastic absorbing random medium. Stochastic absorption is modeled by introducing an attenuation constant…