title: Current density in generalized Fibonacci superlattices under a uniform electric field.
abstract: We present an exhaustive study on tunneling and electrical conduction in an electrically biased GaAs-Al(y)Ga(1-y)As generalized Fibonacci superlattice. The study is based on transfer matrix formalism using an Airy function approach and provides an exact calculation of the current density in the case of quasi-periodic multibarrier systems. The results suggest the use of such quasi-periodic systems in perfect band-pass or band-eliminator (of extremely low width) circuitry. We have clearly demonstrated the resonance-type peaks and negative differential conductivity regimes in such systems. It has also been found that quasi-periodicity favors sharp negative differential conductivity peaks compared to those in periodic superlattices and thus have profound importance in device applications.
authors.affiliation: Prabhat Kumar College, Contai, Purba Medinipur, WB 721401, India. Department of Physics and Technophysics, Vidyasagar University, Midnapore 721102, India.
authors.forename: P
authors.initials: P
authors.lastname: Panchadhyayee
authors.forename: R
authors.initials: R
authors.lastname: Biswas
authors.forename: Arif
authors.initials: A
authors.lastname: Khan
authors.forename: P K
authors.initials: PK
authors.lastname: Mahapatra