68 citations · 236 across the 13 of their papers we have counts for
13 papers
Effect of boron nitride defects and charge inhomogeneity on 1/f noise in encapsulated graphene
Chandan Kumar, Anindya Das
Low frequency 1/f noise is investigated in graphene, encapsulated between hexagonal boron nitride (hBN) substrate in dual gated geometry. The overall noise magnitude is smaller as…
Imaging Hydrodynamic Electrons Flowing Without Landauer-Sharvin Resistance
Chandan Kumar, John Birkbeck, Joseph A. Sulpizio +8
Electrical resistance usually originates from lattice imperfections. However, even a perfect lattice has a fundamental resistance limit, given by the Landauer conductance caused by…
Spread and erase -- How electron hydrodynamics can eliminate the Landauer-Sharvin resistance
Ady Stern, Thomas Scaffidi, Oren Reuven +3
It has long been realized that even a perfectly clean electronic system harbors a Landauer-Sharvin resistance, inversely proportional to the number of its conduction channels. This…
Temperature dependent maximization of work and efficiency in a degeneracy assisted quantum Stirling heat engine
Sarbani Chatterjee, Arghadip Koner, Sohini Chatterjee +1
We propose a quantum Stirling heat engine with an ensemble of harmonic oscillators as the working medium. We show that the efficiency of the harmonic oscillator quantum Stirling he…
Interplay of filling fraction and coherence in symmetry broken graphene p-n junction
Arup Kumar Paul, Manas Ranjan Sahu, Chandan Kumar +3
The coherence of quantum Hall (QH) edges play the deciding factor in demonstrating an electron interferometer, which has potential to realize a topological qubit. A Graphene p-n ju…
Equilibration of Quantum hall edges in symmetry broken bilayer graphene
Chandan Kumar, Saurabh Kumar Srivastav, Anindya Das
Equilibration of quantum Hall edges is studied in a high quality dual gated bilayer graphene device in both unipolar and bipolar regime when all the degeneracies of the zero energy…