28 citations · 32 across the 2 of their papers we have counts for
5 papers · 1 filter
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…
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…
Chaos and rectification of electromagnetic wave in a lateral semiconductor superlattice
Kirill N. Alekseev, Pekka Pietilainen, Alexander A. Zharov +1
We find the conditions for a rectification of electromagnetic wave in a lateral semiconductor superlattice with a high mobility of electrons. The rectification is assisted by a tra…