Sourabh Barua
@bitmesra.ac.in
BIT Mesra Ranchi
Scopus Publications
- Optimal Co substitution enabled enhanced electrocatalytic activity for oxygen evolution reaction in KVO3
Poonam Moar, Mange Ram, Krishna Kanta Haldar, Krishnakanta Mondal, Sourabh Barua
Journal of Solid State Chemistry, 2026 - Role of positional isomerism in A-site organic cation: structural variation driven photophysical and ferroelectric responses in centrosymmetric layered perovskites
Vishal Singh, Poonam Moar, Dirtha Sanyal, Sourabh Barua, Joydeep Dhar
Journal of Materials Chemistry C, 2026
Positional isomerism in the A-site cation modulates the crystal packing and photophysical properties of layered perovskites and subsequently, drives defect-mediated ferroelectric responses by reducing crystallographic symmetry. - Enhanced electrocatalytic activity of optimally Mo-substituted NiTe2 nanorods for hydrogen evolution
Joyal Sunny, Karuna Sharma, Poonam Moar, Imtiaz Ahmed, Krishna Kanta Haldar, et al.
Chemical Physics, 2026 - CoMnO3 as an Efficient Electrocatalyst for Oxygen Evolution Reaction
Megha S. Babu, Poonam Moar, Krishna Kanta Haldar, Sourabh Barua
Chemistryselect, 2025
The increasing demand for sustainable and efficient energy solutions facilitates advancements in electrocatalyst development for the oxygen evolution reaction (OER), a key process in water splitting for hydrogen production. This study presents CoMnO 3 , a perovskite‐type oxide, as a novel electrocatalyst synthesized via the sol‐gel method. The interaction between cobalt and manganese in CoMnO 3 enhances its catalytic efficiency. CoMnO 3 combines low cost, high abundance, and tunable electronic structure with good performance for the oxygen evolution reaction, making it a practical and sustainable alternative to state‐of‐the‐art noble materials like IrO 2 and RuO 2 . Characterizations evaluate the crystalline structure, surface morphology, and chemical composition of the electrocatalyst. Electrochemical performance evaluated using linear sweep and cyclic voltammetry in 1 M KOH results in an overpotential of 481.8 mV at 10 mA/cm 2 and a Tafel slope of 104.4 mV/dec, demonstrating excellent catalytic activity of CoMnO 3 for the oxygen evolution reaction. These findings position CoMnO 3 as a promising candidate for renewable energy applications, particularly in the oxygen evolution reaction, which aims at sustainable hydrogen production. - Quantum oscillation study of the large magnetoresistance in Mo substituted WTe2 single crystals
Sourabh Barua, M. R. Lees, G. Balakrishnan, P. A. Goddard
Physical Review B, 2024
The list of interesting electrical properties exhibited by transition metal dichalcogenides has grown with the discovery of extremely large magnetoresistance (MR) and type-II Weyl semimetal behavior in WTe2 and MoTe2. The extremely large MR in WTe2 is still not adequately understood. Here, we systematically study the effect of Mo substitution on the quantum oscillations in the MR in WTe2. The MR decreases with Mo substitution, however, the carrier concentrations extracted from the quantum oscillations show that the charge compensation improves. We believe that earlier interpretations based on the two-band theory, which attribute the decrease in MR to charge imbalance, could be incorrect due to overparametrization. We attribute the decrease in MR in the presence of charge compensation to a fall in transport mobility, which is evident from the residual resistivity ratio data. The quantum scattering time and the effective masses do not change within experimental errors upon substitution. Published by the American Physical Society 2024 - Investigating the effect of lead substitution on the optical, electrical, and photoresponse properties of Quasi-2D double perovskites
Vishal Singh, Mainak Das, Krishnakanta Mondal, Sourabh Barua, Dirtha Sanyal, et al.
Journal of Physics and Chemistry of Solids, 2024 - Unraveling the Role of Orbital Interaction in the Electrochemical HER of the Trimetallic AgAuCu Nanobowl Catalyst
Rathindranath Biswas, Saptarshi Ghosh Dastider, Imtiaz Ahmed, Sourabh Barua, Krishnakanta Mondal, et al.
Journal of Physical Chemistry Letters, 2023
Unraveling the origins of the electrocatalytic activity of composite nanomaterials is crucial but inherently challenging. Here, we present a comprehensive investigation of the influence of different orbitals' interaction in the AuAgCu nanobowl model electrocatalyst during the hydrogen evolution reaction (HER). According to our theoretical study, AgAuCu exhibits a lower energy barrier than AgAu and AgCu bimetallic systems for the HER, suggesting that the trimetallic AgAuCu system interacts optimally with H*, resulting in the most efficient HER catalyst. As we delve deeper into the HER activity of AgAuCu, it was observed that the presence of Cu allows Au to adsorb the H* intermediate through the hybridization of s orbitals of hydrogen and s, dx2-y2, and dz2 orbitals of Au. Such orbital interaction was not present in the cases of AgAu and AgCu bimetallic systems, and as a result, these bimetallic systems exhibit lower HER activities. - Hydrogen-impurity-induced unconventional magnetism in semiconducting molybdenum ditelluride
Jonas A. Krieger, Daniel Tay, Igor P. Rusinov, Sourabh Barua, Pabitra K. Biswas, et al.
Physical Review Materials, 2023
Layered transition-metal dichalcogenides are proposed as building blocks for van der Waals (vdW) heterostructures due to their graphene-like two dimensional structure. For this purpose, a magnetic semiconductor could represent an invaluable component for various spintronics and topotronics devices. Here, we combine different local magnetic probe spectroscopies with angle-resolved photoemission and density-functional theory calculations to show that 2H-MoTe2 is on the verge of becoming magnetic. Our results present clear evidence that the magnetism can be"switched on"by a hydrogen-like impurity. We also show that this magnetic state survives up to the free surface region, demonstrating the material's potential applicability as a magnetic component for thin-film heterostructures. - Arduino based temperature controlled sample holder using a power transistor and its application to measure the band gap of a silicon p-n diode
Swarnava Mitra, Aditya Mishra, Sourabh Barua
European Journal of Physics, 2022
This experiment is developed with the aim of designing a temperature-controlled sample holder by using a commonly available power transistor as the heating element. Most temperature-controlled sample holders use commonplace heaters, which are made of high resistance materials like nichrome 80/20 (80% nickel, 20% chromium) wire and similar materials. The fabrication of this temperature-controlled sample holder also leads to the usage of high power electronic components, like power transistors and power resistors which are, otherwise, neglected in most laboratory experiments. Moreover, to develop this system, Arduino Uno Rev3 and resistance temperature detector (RTD) were used for the purposes of data acquisition and temperature measurement, respectively. Arduino is a single board micro-controller and RTD functions as a temperature sensor. This experiment serves as a good example of application and unification of basic concepts of electronics, heat and thermodynamics and offers an insight into data acquisition. The experiment is non-proprietary, and the apparatus is entirely made from off-the-shelf items. Thus, reconstruction and use will be simple and inexpensive. The power transistor, along with the power resistors, generates enough heat to raise the temperature of the sample holder by about 100 K. Also, to exhibit the working of the sample-holder, the energy band gap of the material of a p–n junction diode (silicon) has been determined experimentally using the setup. - Proximity-induced ferromagnetism and chemical reactivity in few-layer VSe2 heterostructures
G. Vinai, C. Bigi, A. Rajan, M. D. Watson, T.-L. Lee, et al.
Physical Review B, 2020
Among transition-metal dichalcogenides, mono and few-layers thick ${\\mathrm{VSe}}_{2}$ has gained much recent attention following claims of intrinsic room-temperature ferromagnetism in this system, which have nonetheless proved controversial. Here, we address the magnetic and chemical properties of $\\mathrm{Fe}/{\\mathrm{VSe}}_{2}$ heterostructure by combining element sensitive x-ray absorption spectroscopy and photoemission spectroscopy. Our x-ray magnetic circular dichroism results confirm recent findings that both native mono/few-layer and bulk ${\\mathrm{VSe}}_{2}$ do not show intrinsic ferromagnetic ordering. Nonetheless, we find that ferromagnetism can be induced, even at room temperature, after coupling with a Fe thin film layer, with antiparallel alignment of the moment on the V with respect to Fe. We further consider the chemical reactivity at the $\\mathrm{Fe}/{\\mathrm{VSe}}_{2}$ interface and its relation with interfacial magnetic coupling. - Growth and characterization of two-dimensional crystals for communication and energy applications
Laxmi Narayan Tripathi, Sourabh Barua
Progress in Crystal Growth and Characterization of Materials, 2019 - Electronic Structure and Enhanced Charge-Density Wave Order of Monolayer VSe2
Jiagui Feng, Deepnarayan Biswas, Akhil Rajan, Matthew D. Watson, Federico Mazzola, et al.
Nano Letters, 2018 - Signatures of the Kondo effect in VSe2
Sourabh Barua, M. Ciomaga Hatnean, M. R. Lees, G. Balakrishnan
Scientific Reports, 2017 - Robust quantum oscillations with non-zero Berry phase in Bi2Te3
Sourabh Barua, K.P. Rajeev
Solid State Communications, 2016 - Evidence for topological surface states in metallic single crystals of Bi2Te3
Sourabh Barua, K P Rajeev, Anjan K Gupta
Journal of Physics Condensed Matter, 2015 - Status of surface conduction in topological insulators
Sourabh Barua, K. P. Rajeev
Aip Advances, 2014 - Thickness dependence of electrical transport: A test for surface conduction in topological insulators
Sourabh Barua, K. P. Rajeev
Aip Conference Proceedings, 2014 - Observation of Coulomb blockade and Coulomb staircase in a lateral metal nanostructure
Sourabh Barua, Rohan Poojary, K. P. Rajeev
Aip Conference Proceedings, 2013
RECENT SCHOLAR PUBLICATIONS
- arXiv: Contrasting impurity-induced magnetism and dynamics in 2H-MoTe2
JA Krieger, VL Karner, Z Salman, A Chatzichristos, S Barua, ...
2026 - Contrasting impurity-induced magnetism and dynamics in 2H-MoTe2
JA Krieger, IP Rusinov, S Barua, A Chatzichristos, J Croese, D Fujimoto, ...
arXiv preprint arXiv:2601.20444 , 2026
2026 - Optimal Co substitution enabled enhanced electrocatalytic activity for oxygen evolution reaction in KVO3
P Moar, M Ram, KK Haldar, K Mondal, S Barua
Journal of Solid State Chemistry, 125818 , 2026
2026 - Role of positional isomerism in A-site organic cation: structural variation driven photophysical and ferroelectric responses in centrosymmetric layered perovskites
V Singh, P Moar, D Sanyal, S Barua, J Dhar
Journal of Materials Chemistry C , 2026
2026
Citations: 1 - CoMnO 3 as an Efficient Electrocatalyst for Oxygen Evolution Reaction
MS Babu, P Moar, KK Haldar, S Barua
ChemistrySelect 10 (48), e04056 , 2025
2025 - Enhanced electrocatalytic activity of optimally Mo-substituted NiTe2 nanorods for hydrogen evolution
J Sunny, K Sharma, P Moar, I Ahmed, KK Haldar, K Mondal, S Barua
Chemical Physics, 113018 , 2025
2025
Citations: 4 - Quantum oscillation study of the large magnetoresistance in Mo substituted single crystals
S Barua, MR Lees, G Balakrishnan, PA Goddard
Physical Review B 110 (15), 155113 , 2024
2024
Citations: 4 - Investigating the effect of lead substitution on the optical, electrical, and photoresponse properties of Quasi-2D double perovskites
V Singh, M Das, K Mondal, S Barua, D Sanyal, PP Ray, J Dhar
Journal of Physics and Chemistry of Solids 192, 112082 , 2024
2024
Citations: 4 - Hydrogen-impurity-induced unconventional magnetism in semiconducting molybdenum ditelluride
JA Krieger, D Tay, IP Rusinov, S Barua, PK Biswas, L Korosec, ...
Physical Review Materials 7 (4), 044414 , 2023
2023
Citations: 6 - Unraveling the role of orbital interaction in the electrochemical HER of the trimetallic AgAuCu nanobowl catalyst
R Biswas, SG Dastider, I Ahmed, S Barua, K Mondal, KK Haldar
The Journal of Physical Chemistry Letters 14 (13), 3146-3151 , 2023
2023
Citations: 24 - Theoretical Considerations of 2D Materials in Energy Applications
H Rajagopalan, S Dutta, S Barua, PK Dubey, J Chaturvedi, LN Tripathi
2D Nanomaterials, 89-108 , 2022
2022
Citations: 1 - Arduino based temperature controlled sample holder using a power transistor and its application to measure the band gap of a silicon p–n diode
S Mitra, A Mishra, S Barua
European Journal of Physics 43 (1), 015804 , 2022
2022
Citations: 2 - Proximity-induced ferromagnetism and chemical reactivity in few-layer heterostructures
G Vinai, C Bigi, A Rajan, MD Watson, TL Lee, F Mazzola, S Modesti, ...
Physical Review B 101 (3), 035404 , 2020
2020
Citations: 33 - Growth and characterization of two-dimensional crystals for communication and energy applications
LN Tripathi, S Barua
Progress in Crystal Growth and Characterization of Materials 65 (4), 100465 , 2019
2019
Citations: 17 - Bulk electronic and local magnetic properties of semiconducting 2H-molybdenum ditelluride
J Krieger, N Schröter, Z Guguchia, S Holenstein, VN Strocov, Z Salman, ...
Joint Annual Meeting of the Swiss Physical Society and the Austrian Physical … , 2019
2019 - Electronic Structure and Enhanced Charge-Density Wave Order of Monolayer VSe 2
J Feng, D Biswas, A Rajan, MD Watson, F Mazzola, OJ Clark, ...
Nano letters 18 (7), 4493-4499 , 2018
2018
Citations: 299 - Signatures of the Kondo effect in VSe 2
S Barua, MC Hatnean, MR Lees, G Balakrishnan
Scientific reports 7 (1), 10964 , 2017
2017
Citations: 105 - Robust quantum oscillations with non-zero Berry phase in Bi2Te3
S Barua, KP Rajeev
Solid State Communications 248, 68-76 , 2016
2016
Citations: 4 - Quantum oscillations with non-zero Berry phase from a complex three dimensional Fermi surface in Bi2Te3
S Barua, KP Rajeev
arXiv preprint arXiv:1504.02386 , 2015
2015 - Evidence for topological surface states in metallic single crystals of Bi 2 Te 3
S Barua, KP Rajeev, AK Gupta
Journal of Physics: Condensed Matter 27 (1), 015601 , 2015
2015
Citations: 42
MOST CITED SCHOLAR PUBLICATIONS
- Electronic Structure and Enhanced Charge-Density Wave Order of Monolayer VSe 2
J Feng, D Biswas, A Rajan, MD Watson, F Mazzola, OJ Clark, ...
Nano letters 18 (7), 4493-4499 , 2018
2018
Citations: 299 - Signatures of the Kondo effect in VSe 2
S Barua, MC Hatnean, MR Lees, G Balakrishnan
Scientific reports 7 (1), 10964 , 2017
2017
Citations: 105 - Evidence for topological surface states in metallic single crystals of Bi 2 Te 3
S Barua, KP Rajeev, AK Gupta
Journal of Physics: Condensed Matter 27 (1), 015601 , 2015
2015
Citations: 42 - Proximity-induced ferromagnetism and chemical reactivity in few-layer heterostructures
G Vinai, C Bigi, A Rajan, MD Watson, TL Lee, F Mazzola, S Modesti, ...
Physical Review B 101 (3), 035404 , 2020
2020
Citations: 33 - Unraveling the role of orbital interaction in the electrochemical HER of the trimetallic AgAuCu nanobowl catalyst
R Biswas, SG Dastider, I Ahmed, S Barua, K Mondal, KK Haldar
The Journal of Physical Chemistry Letters 14 (13), 3146-3151 , 2023
2023
Citations: 24 - Status of surface conduction in topological insulators
S Barua, KP Rajeev
AIP Advances 4 (1) , 2014
2014
Citations: 18 - Growth and characterization of two-dimensional crystals for communication and energy applications
LN Tripathi, S Barua
Progress in Crystal Growth and Characterization of Materials 65 (4), 100465 , 2019
2019
Citations: 17 - Hydrogen-impurity-induced unconventional magnetism in semiconducting molybdenum ditelluride
JA Krieger, D Tay, IP Rusinov, S Barua, PK Biswas, L Korosec, ...
Physical Review Materials 7 (4), 044414 , 2023
2023
Citations: 6 - Enhanced electrocatalytic activity of optimally Mo-substituted NiTe2 nanorods for hydrogen evolution
J Sunny, K Sharma, P Moar, I Ahmed, KK Haldar, K Mondal, S Barua
Chemical Physics, 113018 , 2025
2025
Citations: 4 - Quantum oscillation study of the large magnetoresistance in Mo substituted single crystals
S Barua, MR Lees, G Balakrishnan, PA Goddard
Physical Review B 110 (15), 155113 , 2024
2024
Citations: 4 - Investigating the effect of lead substitution on the optical, electrical, and photoresponse properties of Quasi-2D double perovskites
V Singh, M Das, K Mondal, S Barua, D Sanyal, PP Ray, J Dhar
Journal of Physics and Chemistry of Solids 192, 112082 , 2024
2024
Citations: 4 - Robust quantum oscillations with non-zero Berry phase in Bi2Te3
S Barua, KP Rajeev
Solid State Communications 248, 68-76 , 2016
2016
Citations: 4 - Arduino based temperature controlled sample holder using a power transistor and its application to measure the band gap of a silicon p–n diode
S Mitra, A Mishra, S Barua
European Journal of Physics 43 (1), 015804 , 2022
2022
Citations: 2 - Role of positional isomerism in A-site organic cation: structural variation driven photophysical and ferroelectric responses in centrosymmetric layered perovskites
V Singh, P Moar, D Sanyal, S Barua, J Dhar
Journal of Materials Chemistry C , 2026
2026
Citations: 1 - Theoretical Considerations of 2D Materials in Energy Applications
H Rajagopalan, S Dutta, S Barua, PK Dubey, J Chaturvedi, LN Tripathi
2D Nanomaterials, 89-108 , 2022
2022
Citations: 1 - arXiv: Contrasting impurity-induced magnetism and dynamics in 2H-MoTe2
JA Krieger, VL Karner, Z Salman, A Chatzichristos, S Barua, ...
2026 - Contrasting impurity-induced magnetism and dynamics in 2H-MoTe2
JA Krieger, IP Rusinov, S Barua, A Chatzichristos, J Croese, D Fujimoto, ...
arXiv preprint arXiv:2601.20444 , 2026
2026 - Optimal Co substitution enabled enhanced electrocatalytic activity for oxygen evolution reaction in KVO3
P Moar, M Ram, KK Haldar, K Mondal, S Barua
Journal of Solid State Chemistry, 125818 , 2026
2026 - CoMnO 3 as an Efficient Electrocatalyst for Oxygen Evolution Reaction
MS Babu, P Moar, KK Haldar, S Barua
ChemistrySelect 10 (48), e04056 , 2025
2025 - Bulk electronic and local magnetic properties of semiconducting 2H-molybdenum ditelluride
J Krieger, N Schröter, Z Guguchia, S Holenstein, VN Strocov, Z Salman, ...
Joint Annual Meeting of the Swiss Physical Society and the Austrian Physical … , 2019
2019
