36 citations · 104 across the 6 of their papers we have counts for
6 papers
Fast and accurate determination of the curvature-corrected field emission current
Debabrata Biswas, Rajasree Ramachandran
The curvature-corrected field emission current density, obtained by linearizing at or below the Fermi energy, is investigated. Two special cases, corresponding to the peak of the n…
Approximate universality in the tunneling potential for curved field emitters -- a line charge model approach
Rajasree Ramachandran, Debabrata Biswas
Field emission tips with apex radius of curvature below 100nm are not adequately described by the standard theoretical models based on the Fowler-Nordheim and Murphy-Good formalism…
Higher order curvature corrections to the field emission current density
Debabrata Biswas, Rajasree Ramachandran
A simple expression for the Gamow factor is obtained using a second order curvature corrected tunneling potential. Our results show that it approximates accurately the `exact-WKB'…
The cosine law of field enhancement factor variation: generic emitter shapes
Debabrata Biswas, Gaurav Singh, Rajasree Ramachandran
The cosine law of field enhancement factor variation was recently derived for a hemi-ellipsoidal emitter and numerically established for other smooth emitter shapes (Biswas et al,…
Curvature correction to the field emission current
Debabrata Biswas, Rajasree Ramachandran
The curvature of field emitter tips leads to an altered tunneling potential that assumes significance when the radius of curvature is small. We provide here an analytical curvature…
The tunneling potential for field emission from nanotips
Debabrata Biswas, Rajasree Ramachandran, Gaurav Singh
In the quasi-planar approximation of field emission, the potential energy due to an external electrostatic field is expressed as where is the perpendicular…