Chandan Bera
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Strain-engineered anomalous Nernst effect and layer-polarized anomalous Hall response in RuBr2 Open
The anomalous Nernst effect (ANE) has gained attention as a viable mechanism for transverse thermoelectric energy conversion. In this work, we systematically investigate the impact of strain on the ANE response in both monolayer and bilaye…
Significantly Enhanced Lorenz Number in Twisted Bilayer Graphene Open
Twisted bilayer graphene (tblg) attracts significant interest in the scientific community due to its unique electronic properties, which arise from the Moiré pattern formed within it. Graphene is a well‐known material that violates the Wie…
Ultrahigh pyroelectricity in monoelemental 2D tellurium Open
We report an ultrahigh pyroelectric response in van der Waals bonded layers of two-dimensional (2D) tellurium (Te) nanosheets (thickness, d = 4 to 5 nm) at periodic on-off temperature oscillations. For the first time a large pyroelectric c…
Rashba spin-splitting and spin Hall effect in Janus monolayers Sb2XSX’ (X, X’= S, Se, or Te; X ≠ X’) Open
The combined influence of spin–orbit coupling and spatial inversion asymmetry leads to an enhancement of electronic properties, including Rashba spin-splittings as well as spin Hall effect. Recent research has shown the possibility to crea…
Engineering piezoelectricity at vdW interfaces of quasi-1D chains in 2D Tellurene Open
Low-dimensional piezoelectrics have drawn attention to the realization in nano-scale devices with high integration density. A unique branch of 2D Tellurene bilayers formed of weakly interacting quasi-1D chains via van der Waals forces is f…
View article: Ultralow Lattice Thermal Conductivity in Complex Structure Cu26V2Sn6Se32 due to Interaction of Low-Frequency Acoustic-Optical Phonons
Ultralow Lattice Thermal Conductivity in Complex Structure Cu26V2Sn6Se32 due to Interaction of Low-Frequency Acoustic-Optical Phonons Open
Damping of phonon momentum suppresses the lattice thermal conductivity (kl) through low energy acoustic-optical phonon interactions. We studied the thermal transport properties and underlying mechanism of phonon interactions in the large u…
Enhanced thermoelectric performance of a wide-bandgap twisted heterostructure of graphene and boron nitride Open
The twisted structure of two-dimensional heterostructure improved thermoelectric properties by enhancing electrical properties and reducing thermal conductivity.
View article: Emerging interfacial magnetization in isovalent manganite heterostructures driven by octahedral coupling
Emerging interfacial magnetization in isovalent manganite heterostructures driven by octahedral coupling Open
The distortion of corner-sharing octahedra in isovalent perovskite transition-metal oxide interfaces is proven to be an excellent way to tailor the electronic and magnetic properties of their heterostructures. Combining depth-dependent mag…
Quasi-harmonic approach to evaluate pyroelectric properties in Janus CrSeBr monolayer Open
Two-dimensional materials are emerging as promising dielectric materials and have enormous possibilities in wearable micro and nanoelectronics, sensor, and detectors. The theoretical calculation is performed to investigate the pyroelectric…
Light-matter interaction of the polar-polar interface LaVO<sub>3</sub>-KTaO<sub>3</sub> (111) Open
KTaO 3 (KTO) has emerged as a potential candidate in the spintronics block showing the emergent phenomena in its bulk form as well as thin films, especially in KTO-based heterostructures and interfaces. In this work, we have grown a thin f…
View article: Interaction of Acoustic and Optical Phonons in Soft Bonded Cu-Se Framework of Large Unit Cell Minerals with Anionic Disorders
Interaction of Acoustic and Optical Phonons in Soft Bonded Cu-Se Framework of Large Unit Cell Minerals with Anionic Disorders Open
Large unit cell copper-chalcogenide based minerals with high crystalline anharmonicity have a potential for thermoelectric applications owing to their inherent poor lattice thermal conductivity. Here, the softening of copper-selenium bondi…
Theoretical design and discovery of two‐dimensional materials for next‐generation flexible piezotronics and energy conversion Open
Two‐dimensional (2D) materials are at the epicenter of the current nanotechnology research for its intriguing properties. It has the advantage of high flexibility, high surface to volume ratio, robust mechanical strength and are stackable …
A 3D-hierarchical flower like architecture of anion induced layered double hydroxides for competing anodic reactions Open
In this study, the partially sulfurized CoFeLDH was synthesized by using Na 2 S as the sulfur source. The catalyst performed excellently for UOR & OER requiring a lower overpotential of 171 and 268 mV at the current density of 40 mA cm −2 …
Non‐Trivial Topological States in Spin‐Polarized 2D Electron Gas at EuO–KTO Interface with the Rashba Spin Texture Open
Oxide heterointerfaces are gaining popularity for a variety of applications because of a wide range of emergent quantum phenomena. The creation of a highly conducting and spin‐polarized 2D electron gas (2DEG) with anomalous Hall effect at …
View article: Cellulose nano-fiber and fly-ash based nanohybrids: a facile and sustainable thermal insulating material
Cellulose nano-fiber and fly-ash based nanohybrids: a facile and sustainable thermal insulating material Open
Recent years have witnessed a huge surge in energy consumption by the building sector, for maintaining a pleasant atmosphere inside the building. Keeping in mind the possible energy crisis in future, the use of thermal insulators can prese…
CCDC 2115293: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: Biomass-derived cellulose nanofibers and iron oxide-based nanohybrids for thermal insulation application
Biomass-derived cellulose nanofibers and iron oxide-based nanohybrids for thermal insulation application Open
This study reports the development of a nanohybrid aerogel from biomass-derived cellulose nanofibers and iron oxide, with high mechanical strength, fire retardant properties and low thermal conductivity as low as 0.024 W m −1 K −1 .
View article: Coexistence of Multiple Magnetic Interactions in Oxygen Deficient V2O5 Nanoparticles
Coexistence of Multiple Magnetic Interactions in Oxygen Deficient V2O5 Nanoparticles Open
This paper reports on the spin glass-like coexistence of competing magnetic orders in oxygen-deficient V2O5 nanoparticles having a broad size distribution. X-ray photoelectron spectroscopy yields the surface chemical stoichiometry of nearl…
View article: Polaronic Correlations in Magnetic Behavior of Oxygen Deficient V2O5
Polaronic Correlations in Magnetic Behavior of Oxygen Deficient V2O5 Open
The undoped V2O5 sample is synthesized by thermal decomposition resulting in oxygen deficient polycrystalline nature. It has a crystallite size of about 80 nm and a chemical stoichiometry of V2O4.65 with a significant V4+ states in additio…
Large piezoelectric and thermal expansion coefficients with negative Poisson's ratio in strain-modulated tellurene Open
2D tellurene monolayer exhibits excellent piezoelectric properties and an anomalous negative Poisson's ratio under the effect of strain. Tellurene having puckered structure has a large temperature dependent expansion.
Effect of nanoinclusions on the lattice thermal conductivity of SnSe Open
We theoretically investigate the effect of nanoparticle(NP) inclusion on the lattice thermal conductivity ( κ l ) of SnSe matrix. The theoretical approach involves the prediction of κ l by varying the radius ( R ), density ( D 1 ), and vol…
The Effect of Janus Asymmetry on Thermal Transport in SnSSe Open
Several ternary "Janus" metal dichalcogenides such as {Mo,Zr,Pt}-SSe have emerged as candidates with significant potential for optoelectronic, piezoelectric, and thermoelectric applications. SnSSe, a natural option to explore as a thermoel…
Mechanistic insights into surface contribution towards heat transfer in a nanofluid Open
Role of nanoparticle surface in the thermal transport mechanism through nanofluid.