77 citations · 395 across the 19 of their papers we have counts for
7 papers · 1 filter
Quasiperiodic magnetic chain as a spin filter for arbitrary spin states
Biplab Pal
We show that a quasiperiodic magnetic chain comprising magnetic atomic sites sequenced in Fibonacci pattern can act as a prospective candidate for spin filters for particles with a…
Spin filtering and switching action in a diamond network with magnetic-nonmagnetic atomic distribution
Biplab Pal, Paramita Dutta
We propose a simple model quantum network consisting of diamond-shaped plaquettes with deterministic distribution of magnetic and non-magnetic atoms in presence of a uniform extern…
Spin filter for arbitrary spins by substrate engineering
Biplab Pal, Rudolf A. Römer, Arunava Chakrabarti
We design spin filters for particles with potentially arbitrary spin S (= 1/2, 1, 3/2,....) using a one-dimensional periodic chain of magnetic atoms as a quantum device. Describing…
Exotic electron states and tunable magneto-transport in a fractal Aharonov-Bohm interferometer
Atanu Nandy, Biplab Pal, Arunava Chakrabarti
A Sierpinski gasket fractal network model is studied in respect of its electronic spectrum and magneto-transport when each arm of the gasket is replaced by a diamond shaped Aharono…
Absolutely continuous energy bands and extended electronic states in an aperiodic comb-shaped nanostructure
Biplab Pal
The nature of electronic eigenstates and quantum transport in a comb-shaped Fibonacci nanostructure model is investigated within a tight-binding framework. Periodic linear chains a…
Electron states and magneto-transport in a graphene geometry with a fractal distribution of holes
Biplab Pal, Arunava Chakrabarti, Nitai Bhattacharya
We consider an infinite graphene geometry where bonds and sites have been removed selectively to map it onto an effective Sierpinski gasket comprising of hexagons. We show that suc…
On the extendedness of eigenstates in a hierarchical lattice: a critical view
Biplab Pal, Arunava Chakrabarti, Nitai Bhattacharya
We take a critical view at the basic definition of extended single particle states in a non-translationally invariant system. For this, we present the case of a hierarchical lattic…