88 citations · 227 across the 23 of their papers we have counts for
23 papers
Unravelling the polarity of InN quantum dots using a modified approach of negative-spherical-aberration imaging
Piu Rajak, Mahabul Islam, J. J. Jiménez +7
InN quantum dots (QDs) are considered to be promising nanostructures for different device applications. For any hexagonal AB stacking semiconductor system, polarity is an important…
Resonantly-driven nanopores can serve as nanopumps
Aaron D. Ratschow, Doyel Pandey, Benno Liebchen +2
Inducing transport in electrolyte-filled nanopores with dc fields has led to influential applications ranging from nanosensors to DNA sequencing. Here we use the Poisson-Nernst-Pla…
Realizing highly entangled states in asymmetrically coupled three NV centers at room temperature
Declan Mahony, Somnath Bhattacharyya
Despite numerous efforts the coupling between randomly arranged multi-NV centers and also resonators has not been improved significantly mainly due to our limited knowledge of thei…
Emulating coherent backscattering in multipath tunnel systems on a near-term Quantum computer
Shaman Bhattacharyya, Somnath Bhattacharyya
Superconducting qubits already demonstrated potential in emulating coherent back scattering or weak localization (WL) and tunnelling phenomena however, in a real multipath system t…
Effects of Rashba-spin-orbit coupling on superconducting boron-doped nanocrystalline diamond films: evidence of interfacial triplet superconductivity
Somnath Bhattacharyya, Davie Mtsuko, Christopher Allen +1
Among the many remarkable properties of diamond, the ability to superconduct when heavily doped with boron has attracted much interest in the carbon community. When considering the…
Anisotropic three-dimensional weak localization in ultrananocrystalline diamond films with nitrogen inclusions
L. H. Willems van Beveren, D. L. Creedon, N. Eikenberg +6
We present a study of the structural and electronic properties of ultra-nanocrystalline diamond films that were modified by adding nitrogen to the gas mixture during chemical vapou…
Experimental Simulation of Hybrid Quantum Systems and Entanglement on a Quantum Computer
Farai Mazhandu, Kayleigh Mathieson, Christopher Coleman +1
We propose the utilization of the IBM Quantum Experience quantum computing system to simulate different scenarios involving common hybrid quantum system components, the Nitrogen Va…
Hybrid spin-superconducting quantum circuit mediated by deterministically prepared entangled photonic states
Kayleigh Mathieson, Somnath Bhattacharyya
In hybrid quantum systems a controllable coupling can be obtained by mediating the interactions with dynamically introduced photons. We propose a hybrid quantum architecture consis…
Observation of spin-phonon coupling in GdCl3 filled carbon nanotubes
S. Ncube, R. Erasmus, S. Bhattacharyya
The enhancement of spin-phonon coupling in gadolinium filled double walled carbon nanotubes (GdCl3@DWNTs) is demonstrated through temperature dependent magnetrometry and polarized…
Charging effects and anomalous resistive features of superconducting boron doped diamond films
Christopher Coleman, Somnath Bhattacharyya
Anomalous resistive peaks below the superconducting transition temperature in heavily boron doped nanocrystalline diamond films could have potential application in switching device…
Non-s wave superconductivity in boron-doped nanodiamond films with 0-π Josephson junction array
Somnath Bhattacharyya, Christopher Coleman, Davie Mtsuko +1
Superconducting transport properties of granular materials are greatly influenced by the microstructure. We show that in heavily boron-doped diamond films (HBDDF) films some sharp…
Observation of the Berezinskii-Kosterlitz-Thouless transition in Boron-doped diamond films
Christopher Coleman, Somnath Bhattacharyya
The occurrence of the Berezinskii-Kosterlitz-Thouless (BKT) transition is investigated in heavily boron-doped nanocrystalline diamond films through a combination of current-voltage…
Finite bias dependent evolution of superconductor-insulator transition and Zero Bias Conductance in boron doped nanodiamond films
Davie Mtsuko, Christopher Coleman, Somnath Bhattacharyya
We report on transport features in heavily boron doped nanocrystalline diamond (BNCD) films which are not seen in conventional (s-wave) granular superconductors. Observations inclu…
Observation of impedance oscillations in single walled carbon nanotube bundles excited by high frequency signals
George Chimowa, Siphephile Ncube, Somnath Bhattacharyya
We report experimental observation of impedance oscillations in single-walled carbon nanotubes measured from 100 MHz to 65 GHz on coplanar wave guides and a power law dependence of…
Observation of Shubnikov de Haas and Aharanov-Bohm oscillations in silicon nanowires
Tahir Aslan, Davie Mtsuko, Christopher Coleman +2
We record fine oscillations of 20 to 60 mT superimposed on larger oscillations having periodicity ~ 2 T at temperatures up to 100 K and fields up to 10 T from silicon nanowires. Ha…
Emergence of nanoscale inhomogeneity in the superconducting state of a homogeneously disordered conventional superconductor, NbN
Anand Kamlapure, Tanmay Das, Somesh Chandra Ganguli +3
The notion of spontaneous formation of an inhomogeneous superconducting state is at the heart of most theories attempting to understand the superconducting state in the presence of…
Theoretical model of structure-dependent conductance crossover in disordered carbon
Mikhail V. Katkov, Somnath Bhattacharyya
We analyze the effects of sp^2/sp^3 bond-aspect ratio on the transport properties of amorphous carbon quasi-1D structures where structural disorder varies in a very non-linear mann…
Conductivity crossover in nano-crystalline diamond films: Realization of a disordered superlattice-like structure
George Chimowa, Dimitry Churochkin, Somnath Bhattacharyya
We present the electrical transport characteristics of a batch of nano-crystalline diamond films of varying nitrogen concentrations and explain the conduction mechanism by the diso…
Sample dispersion in isotachophoresis with Poiseuille counterflow
Somnath Bhattacharyya, Partha P. Gopmandal, Tobias Baier +1
A particular mode of isotachophoresis (ITP) employs a pressure-driven flow opposite to the sample electromigration direction in order to anchor a sample zone at a specific position…
Direct evidence of intercalation in a topological insulator turned superconductor
Tanmay Das, Somnath Bhattacharyya, Bhanu Prakash Joshi +2
A topological insulator Bi2Se3 which shows superconducting property due to Cu doping has been studied using high resolution transmission electron microscopy which provides for the…
Origin of conductivity cross over in entangled multi-walled carbon nanotube network filled by iron
George Chimowa, Ella C. Linganiso, Dmitry Churochkin +2
A realistic transport model showing the interplay of the hopping transport between the outer shells of iron filled entangled multi-walled carbon nanotubes (MWNT) and the diffusive…
Anomalous Raman features of silicon nanowires under high pressure
Somnath Bhattacharyya, Dmitry Churochkin, Rudolph M Erasmus
The potential of silicon nanowires (SiNWs), (diameter < 10 nm) to transform into rigid bundle-like structures with distinct phonon confinement under high pressure (<= 15 GPa), inst…
Anisotropic weakly localized transport in nitrogen-doped ultrananocrystalline diamond films
Kunjal V Shah, Dmitry Churochkin, Zivayi Chiguvare +1
We establish the dominant effect of anisotropic weak localization (WL) in three dimensions associated with a propagative Fermi surface, on the conductivity correction in heavily ni…