28 citations · 120 across the 12 of their papers we have counts for
13 papers
Modulation of trion and exciton formation in monolayer WS2 by dielectric and substrate engineering
Tamaghna Chowdhury, Diptabrata Paul, Divya Nechiyil +5
Photoluminescence (PL) of transition metal dichalcogenide (TMD) monolayers is strongly influenced by the dielectric environment. The defect states present in the substrate induces…
Directing Monolayer Tungsten Disulfide Photoluminescence using a Bent Plasmonic Nanowire on a Mirror Cavity
Shailendra K. Chaubey, Sunny Tiwari, Ashutosh Shukla +3
Designing directional optical antennas without compromising the field enhancement requires specially designed optical cavities. Herein, we report on the experimental observations o…
Directional emission from WS2 monolayer coupled to plasmonic Nanowire-on-Mirror Cavity
Shailendra K. Chaubey, Gokul M. A., Diptabrata Paul +3
Influencing spectral and directional features of exciton emission characteristics from 2D transition metal dichalcogenides by coupling it to plasmonic nano-cavities has emerged as…
Optoelectronic characterisation of twisted germanium sulfide nanowires with experimental observation of intrinsic ferroelectricity
Tamaghna Chowdhury, Aastha Vasdev, Goutam Sheet +1
We report the optoelectrical characterisation of Eshelby twisted Germanium sulfide (GeS) nanowires with first experimental observation of ferroelectric order at room temperature in…
Patterning Superconductivity in a Topological Insulator
Jerome T. Mlack, Atikur Rahman, Gopinath Danda +4
While topological superconductors are predicted to provide building blocks for fault-tolerant quantum computing, one of the remaining challenges is to find a convenient experimenta…
First principles investigation of structural, electronic and optical properties of MgRh intermetallic compound
Md. Lokman Ali, Md. Zahidur Rahaman, Md. Atikur Rahman +1
The structural electronic and optical properties of intermetallic compound MgRh were investigated by using the ab-initio technique from CASTEP code. In this study we have carried o…
Weber blockade in superconducting nanowires
Tyler Morgan-Wall, Benjamin Leith, Nikolaus Hartman +2
We have measured the critical current as a function of magnetic field in short and narrow superconducting aluminum nanowires. In the range of magnetic fields in which vortices can…
Quantum Interference Noise Near the Dirac Point in Graphene
Atikur Rahman, Janice Wynn Guikema, Nina Markovic
Effects of disorder on the electronic transport properties of graphene are strongly affected by the Dirac nature of the charge carriers in graphene. This is particularly pronounced…
Asymmetric scattering of Dirac electrons and holes in graphene
Atikur Rahman, Janice Wynn Guikema, Nina Markovic
The relativistic nature of Dirac electrons and holes in graphene profoundly affects the way they interact with impurities. Signatures of the relativistic behavior have been observe…
Transmission of phase information between electrons and holes in graphene
Atikur Rahman, Janice Wynn Guikema, Soo Hyung Lee +1
We have studied quantum interference between electrons and holes in a split-ring gold interferometer with graphene arms, one of which contained a pn junction. The carrier type, the…
Substrate-Independent Catalyst-Free Synthesis of High-Purity Bi2Se3 Nanostructures
Jerome T. Mlack, Atikur Rahman, Gary L. Johns +2
We describe a catalyst-free vapor-solid synthesis of bismuth selenide (Bi2Se3) nanostructures at ambient pressure with hydrogen as a carrier gas. The nanostructures were synthesize…
Observation of angle-dependent transmission of Dirac electrons in graphene hetero junctions
Atikur Rahman, Janice Wynn Guikema, N. M. Hassan +1
The relativistic nature of charge carriers in graphene is expected to lead to an angle- dependent transmission through a potential barrier, where Klein tunneling involves annihilat…
Formation of Wigner crystals in conducting polymer nanowires
Atikur Rahman, Milan K. Sanyal
The search for theoretically predicted Wigner crystal in one-dimensional (1D) wires of structurally disordered materials exhibiting properties of charge-density-waves have remained…