106 citations · 214 across the 8 of their papers we have counts for
8 papers
Electronic compressibility of graphene: The case of vanishing electron correlations and the role of chirality
D. S. L. Abergel, Pekka Pietiläinen, Tapash Chakraborty
A recent surprising finding that electronic compressibility measured experimentally in monolayer graphene can be described solely in terms of the kinetic energy [J. Martin, et al.,…
Electronic Correlations in Double Quantum Dots
Jaime Zaratiegui, Pekka Pietilainen, Hong-Yi Chen +1
We present a study of the electronic structure of two laterally coupled gaussian quantum dots filled with two particles. The exact diagonalization method has been used in order to…
Spin Hot Spots in vertically-coupled Few-electron Quantum Dots
Anjana Bagga, Pekka Pietilainen, Tapash Chakraborty
The effects of spin-orbit (SO) coupling arising from the confinement potential in single and two vertically-coupled quantum dots have been investigated. Our work indicates that a d…
Energy levels and magneto-optical transitions in parabolic quantum dots with spin-orbit coupling
Pekka Pietilainen, Tapash Chakraborty
We report on the electronic properties of few interacting electrons confined in a parabolic quantum dot based on a theoretical approach developed to investigate the influence of By…
Spin precession in a fractional quantum Hall state with spin-orbit coupling
Marco Califano, Tapash Chakraborty, Pekka Pietilainen
Experimental attempts to realize spin-devices based on concepts derived from single-particle theoretical approaches have not been very successful yet. This raises the fundamental q…
Electron Correlations in a Quantum Dot with Bychkov-Rashba Coupling
Tapash Chakraborty, Pekka Pietilainen
We report on a theoretical approach developed to investigate the influence of Bychkov-Rashba interaction on a few interacting electrons confined in a quantum dot. We note that the…