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Transistors based on Novel 2-D Monolayer Semiconductors Bi2O2Se, InSe, and MoSi2N4 for Enhanced Logic Density Scaling
Keshari Nandan, Ateeb Naseer, Amit Agarwal +2
Making ultra-short gate-length transistors significantly contributes to scaling the contacted gate pitch. This, in turn, plays a vital role in achieving smaller standard logic cell…
Room Temperature Ferroelectricity, Ferromagnetism, and Anomalous Hall Effect in Half-metallic Monolayer CrTe
Imran Ahamed, Atasi Chakraborty, Pushpendra Yadav +4
Two-dimensional materials hosting ferroelectricity and ferromagnetism are crucial for low-power and high-speed information processing technologies. However, intrinsic 2D multiferro…
Designing power efficient transistors using narrow bandwidth materials from the MA2Z4 monolayer series
Keshari Nandan, Somnath Bhowmick, Yogesh S. Chauhan +1
The subthreshold leakage current in transistors has become a critical limiting factor for realizing ultra-low-power transistors. The leakage current is predominantly dictated by th…
Two-dimensional MoSi2N4: An Excellent 2D Semiconductor for Transistors
Keshari Nandan, Barun Ghosh, Amit Agarwal +2
We report the performance of field-effect transistors (FETs), comprised of mono-layer of recently synthesized layered two-dimensional MoSi2N_4 as channel material, using the first…
PdSe2 based field-effect transistors
Keshari Nandan, Amit Agarwal, Somnath Bhowmick +1
Pentagonal PdSe2 is a promising candidate for layered electronic devices, owing to its high air-stability and anisotropic transport properties. Here, we investigate the performance…
Isotopic Separation of Helium through Nanoporous Graphene Membranes: A Ring Polymer Molecular Dynamics Study
Somnath Bhowmick, Marta I. Hernández, José Campos-Martínez +1
Microscopic-level understanding of the separation mechanism for two-dimensional (2D) membranes is an active area of research due to potential implications of this class of membrane…
KCoS: A new two-dimensional in-plane antiferromagnetic insulator
Anan Bari Sarkar, Barun Ghosh, Bahadur Singh +4
The recent discovery of two-dimensional (2D) magnetic materials has brought magnetism to the flatland. This has opened up exciting opportunities for the exploration of fundamental…
Anisotropic plasmons, excitons and electron energy loss spectroscopy of phosphorene
Barun Ghosh, Piyush Kumar, Anmol Thakur +3
In this article, we explore the anisotropic electron energy loss spectrum (EELS) in monolayer phosphorene based on ab-initio time dependent density functional theory calculations.…
Thickness and electric field dependent polarizability and dielectric constant in phosphorene
Piyush Kumar, B. S. Bhadoria, Sanjay Kumar +3
Based on extensive first principle calculations, we explore the thickness dependent effective di- electric constant and slab polarizability of few layer black phosphorene. We find…
Effective Doping of Monolayer Phosphorene by Surface Adsorption of Atoms for Electronic and Spintronic Applications
Priyank Rastogi, Sanjay Kumar, Somnath Bhowmick +2
We study the effect of surface adsorption of 27 different adatoms on the electronic and magnetic properties of monolayer black phosphorus using density functional theory. Choosing…
Electric field induced gap modification in ultrathin blue phosphorous
Barun Ghosh, Suhas Nahas, Somnath Bhowmick +1
We investigate the possibility of band structure engineering in the recently predicted 2D layered form of blue phosphorus via an electric field (E) applied perpendicular to the…
Sensory organ like response determines the magnetism of zigzag-edged honeycomb nanoribbons
Somnath Bhowmick, Amal Medhi, Vijay B. Shenoy
We present an analytical theory for the magnetic phase diagram for zigzag edge terminated honeycomb nanoribbons described by a Hubbard model with an interaction parameter U . We sh…
Sensory Organ like Response of Zigzag Edge Graphene Nanoribbons
Somnath Bhowmick, Vijay B. Shenoy
Using a continuum Dirac theory, we study the density and spin response of zigzag edge terminated graphene ribbons subjected to edge potentials and Zeeman fields. Our analytical cal…
Anisotropy of the Stone-Wales Defect and Warping of Graphene Nano-ribbons: A First-principles Analysis
Somnath Bhowmick, Umesh V Waghmare
Stone-Wales (SW) defects, analogous to dislocations in crystals, play an important role in mechanical behavior of -bonded carbon based materials. Here, we show using first-pr…
Edge State Magnetism of Single Layer Graphene Nanostructures
Somnath Bhowmick, Vijay B. Shenoy
We study edge state magnetism in graphene nanostructures using a mean field theory of the Hubbard model. We investigate how the magnetism of the zigzag edges of graphene is affecte…