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Electronic Structure Theory Group

Publications                     Monographs
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  1. Rishabh Saraswat, Miroslav Kolos, Rekha Verma, František Karlický, and Sitangshu Bhattacharya, "Phonon assisted exciton processes in two-dimensional tungsten monocarbide", ACS Journal of Physical Chemistry C, vol. 128, 20, pp. 8341–8350, (2024). link.

  2. Nilesh Kumar, Miroslav Kolos, Sitangshu Bhattacharya and František Karlický, "Excitons, optical spectra, and electronic properties of semiconducting Hf-based MXenes", Journal of Chemical Physics, vol. 160, pp. 124707, (2024). link.

  3. Vaishnavi Vishnubhotla, Santanu Mahapatra, and Sitangshu Bhattacharya, "Excitonic properties of clustered-P1 borophene", Physical Review B, vol. 108, pp. 245107, (2023). link.

  4. Miroslav Kolos, Rekha Verma, František Karlický, and Sitangshu Bhattacharya, "Large exciton-driven linear and nonlinear optical processes in monolayers of Nitrogen Arsenide and Nitrogen Antimonide", ACS Journal of Physical Chemistry C, vol. 126, 35, pp. 14931–14959, (2022). link.

  5. Miroslav Kolos, Luigi Cigarini, Rekha Verma, František Karlický, and Sitangshu Bhattacharya, "Giant linear and nonlinear excitonic responses in an atomically thin indirect semiconductor Nitrogen Phosphide", ACS Journal of Physical Chemistry C, vol. 125, 23, pp. 12738–12757, (2021). link.

  6. Himani Mishra and Sitangshu Bhattacharya, "Exciton-driven giant non-linear overtone signals from buckled hexagonal monolayer GaAs", Physical Review B, vol. 101, pp. 155132(1)-(14), (2020). link.

  7. Himani Mishra and Sitangshu Bhattacharya, "Giant exciton-phonon coupling and zero-point renormalization in hexagonal monolayer boron nitride", Physical Review B, vol. 99, pp. 165201(1)-(11), (2019) link.

  8. Himani Mishra, Anindya Bose, Amit Dhar and Sitangshu Bhattacharya, "Exciton-phonon coupling and band-gap renormalization in monolayer WSe2", Physical Review B, vol. 98, pp. 045143(1)-(12), (2018) link. Experimentally validated & cross-referenced by Nature Photonics: link.

  9. Akansha Bansal, Himani Mishra, Sitangshu Bhattacharya, and Babu Ram Singh, "First principles calculations of bonding and charges at the Al2O3 interface in a c-Si/SiO2/am-Al2O3 structure applicable for the surface passivation of silicon-based solar cells", IEEE Transaction on Electron Devices, vol. 63, pp. 544-550, (2016). link.

  10. Dipankar Saha, Amretashis Sengupta, Sitangshu Bhattacharya and Santanu Mahapatra, "Impact of Stone-Wales and lattice vacancy defects on the electro-thermal transport of the free standing structure of metallic ZGNR", Journal of Computational Electronics, vol. 13. pp. 862-871, (2014). link.

  11. Sitangshu Bhattacharya, Dipankar Saha, Avik Bid and Santanu Mahapatra, "A continuous electrical conductivity model for monolayer graphene from near intrinsic to far extrinsic region", IEEE Transaction on Electron Devices, vol. 61, pp. 3646-3653, (2014). link.

  12. Rekha Verma, Sitangshu Bhattacharya and Santanu Mahapatra, "Solution of time-dependent Joule heat equation for a graphene sheet under Thomson effect", IEEE Transaction on Electron Devices, vol. 60, pp. 3548-3554, (2013). link.

  13. Rekha Verma, Sitangshu Bhattacharya and Santanu Mahapatra, "Modeling of temperature and field dependent electron mobility in a single layer graphene sheet", IEEE Transaction on Electron Devices, vol. 60, pp. 2695-2698, (2013). link.

  14. Rekha Verma, Sitangshu Bhattacharya and Santanu Mahapatra, "Thermoelectric performance of a single layer graphene sheet for energy harvesting", IEEE Transaction on Electron Devices, vol. 60, pp. 2064-2070, (2013). link.

  15. Rekha Verma, Sitangshu Bhattacharya and Santanu Mahapatra, "Physics-based solution of electrical resistance of graphene under self-heating effect", IEEE Transaction on Electron Devices, vol. 60, pp. 502-505, (2013). link.

  16. Rekha Verma, Sitangshu Bhattacharya and Santanu Mahapatra, "A physics based flexural phonon dependent thermal conductivity model for single layer graphene", IoP Journal of Semiconductor Science and Technology, vol. 28, pp. 015009 (1)-(6), (2013). link.

  17. Ram Krishna Ghosh, Sitangshu Bhattacharya and Santanu Mahapatra, "k.p based closed form energy band gap and transport electron effective mass model for [100] and [110] relaxed and strained Silicon nanowire", Journal of Solid State Electronics, vol. 80, pp. 124-134, (2013). link.

  18. Rekha Verma, Sitangshu Bhattacharya and Santanu Mahapatra, "Theoretical estimation of electro-migration in metallic carbon nanotubes", IEEE Transaction on Electron Devices, vol. 59, pp. 2476-2482, USA, (2012). link.

  19. Ram Krishna Ghosh, Sitangshu Bhattacharya and Santanu Mahapatra, "Physics based band gap model for relaxed and strained [100] silicon nanowires", IEEE Transaction on Electron Devices, vol. 59, pp. 1765-1772, (2012). link.

  20. Sitangshu Bhattacharya and Ramesh Chandra Mallik, "Electrical resistance and seebeck coefficient in PbTe nanowires", Journal of Electronic Materials, vol. 41, pp. 1421-1428, (2012). link.

  21. Sitangshu Bhattacharya, Debashis De, S. M. Adhilari and Kamakhya Prasad Ghatak, "On the two dimensional effective electron mass in Quantum wells, inversion layers and nipi superlattices of Kane type semiconductors in the presence of strong light waves: simplified theory and relative comparison", Journal of Superlattices and Microstructures, vol. 51, pp. 203-222, (2012). link.

  22. Sitangshu Bhattacharya and Santanu Mahapatra, "Quantum capacitance in bilayer graphene nanoribbon", Physica E, vol. 44, pp. 1127-1131, (2012). link.

  23. Rekha Verma, Sitangshu Bhattacharya and Santanu Mahapatra, "Analytical solution of Joule heating equation for metallic single walled carbon nanotube interconnects", IEEE Transaction on Electron Devices, vol. 58, pp. 3991-3996, (2011). link.

  24. Sitangshu Bhattacharya, A. Rex and Santanu Mahapatra, "Physics based thermal conductivity model for metallic single walled carbon nanotube interconnects", IEEE Electronic Device Letters, vol. 32, pp. 203-205, (2011). link.

  25. Sitangshu Bhattacharya, Debashis De, S. M. Adhikari, S. Saha, K. M. Chatterjee, S.Choudhury and Kamakhya Prasad Ghatak, "Simple Theoretical analysis of the Fowler-Nordheim field emission from microstructures and quantum wires of optoelectronic materials", Journal of Superlattices and Microstructures, vol. 50, pp. 609-627, (2011). link.

  26. Sitangshu Bhattacharya and Ramesh Chandra Mallik, "Seebeck coefficient in non-parabolic bulk materials", Journal of Electronic Materials, vol. 40, pp. 1221-1232, (2011). link.

  27. Sitangshu Bhattacharya and Ramesh Chandra Mallik, "Diffusive thermoelectric power in highly asymmetric bilayer graphene nanoribbons", Journal of Electronic Materials, vol. 40, pp. 1181-1189, (2011). link.

  28. Sitangshu Bhattacharya and Ramesh Chandra Mallik,"Seebeck coefficient in bulk and quantum wells of non-parabolic Kane-type materials", Journal of Computational and Theoretical Nanoscience, vol. 8, pp. 746-756, (2011). link.

  29. Sitangshu Bhattacharya and Santanu Mahapatra, "Negative differential conductance and effective electron mass in highly asymmetric ballistic bilayer graphene nanoribbon", Physics Letters A, vol. 374, pp. 2850-2855, (2010). link.

  30. Sitangshu Bhattacharya and Santanu Mahapatra "Analytical atudy of low field diffusive transport in highly asymmetric bilayer graphene nanoribbon", IEEE Transaction on Manoelectronics, vol. 10, pp. 409-416, (2010). link.

  31. Sitangshu Bhattacharya and Santanu Mahapatra, "Simplified theory of carrier back-scattering in semiconducting carbon nanotubes: a Kane's model approach", Journal of Applied Physics, vol. 107, pp. 094314-074312, (2010) link, also selected for publication in Virtual Journal of Nanoscale Science & Technology (vjnano.org), vol. 21, issue 10, (2010).

  32. Debashi De, A. Kumar, S.M. Adhikari, Samit Pahari, N. Islam, P. Banerjee, S.K. Biswas, Sitangshu Bhattacharya and Kamakhya Prasad Ghatak, "Influence of quantum confinement on the photoemission from superlattices of optoelectronic materials", Journal of Superlattices and Microstructures, vol. 47, pp. 377-410, (2010). link.

  33. A. Kumar, S. Choudhury, S. Saha, Samit Pahari, Debashis De, Sitangshu Bhattacharya and Kamakhya Prasad Ghatak, "Thermoelectric power in ultrathin films, quantum wires and carbon nanotubes under classically large magnetic field: simplified theory and relative comparison", Physica B, vol. 405, pp. 472-498, (2009). link.

  34. Kamakhya Prasad Ghatak, Sitangshu Bhattacharya, Samit Pahari, Debashi De and R Benedictus, "Einstein relation in n-i-p-i and microstructures of nonlinear optical, optoelectronic and related materials: simplified theory, relative comparison and suggestion for an experimental determination", Journal of Superlattices and Microstructures, vol. 46, pp. 347-414, (2009). link.

  35. Sitangshu Bhattacharya and Santanu Mahapatra, "Influence of band non-parabolicity on few ballistic properties of III-V Quantum Wire Field Effect Transistors under strong inversion", Journal of Computational and Theoretical Nanoscience, vol. 6, pp. 1605-1616 (2009). link.

  36. Samit Pahari, Sitangshu Bhattacharya, S.Roy, A.Saha and Kamakhya Prasad Ghatak, "Simple theoretical analysis of the Einstein's photoemission from quantum confined superlattices", Journal of Superlattices and Microstructures, vol. 46, pp. 760-796, (2009). link.

  37. Kamakhya Prasad Ghatak, Sitangshu Bhattacharya, Samit Pahari, S. N. Mitra, P.K. Bose and Debashis De, "The carrier contribution to the elastic constants in III-V, ternary and quaternary materials in the presence of light waves: simplified theory, relative comparison and a suggestion for experimental determination", Journal of Physics and Chemistry of Solids, vol. 70, pp. 122-133, (2009). link.

  38. Sitangshu Bhattacharya, Surya Shankar Dan and Santanu Mahapatra, "Influence of band nonparabolicity on the quantized gate capacitance in 𝛿-doped MODFED of III-V and related materials", Journal of Applied Physics, vol. 104, pp. 074304-074312, (2008). link.

  39. Kamakahya Prasad Ghatak, Sitangshu Bhattacharya, S. Bhowmik, R. Benedictus and S. Choudhury, "Thermoelectric power in carbon nanotubes and quantum wires of nonlinear optical, optoelectronic, and related materials under strong magnetic field: Simplified theory and relative comparison", Journal of Applied Physics, vol. 103, pp. 034303-034024, (2008). link.

  40. Kamakahya Prasad Ghatak, Sitangshu Bhattacharya, Samit Pahari, Debashis De, S. Ghosh, and Madhuchhanda Mitra, "Influence of light waves on the thermoelectric power under large magnetic field in III-V, ternary and quaternary materials", Annalen der Physik, vol. 17, pp. 195-220, (2008). link.

  41. Kamakahya Prasad Ghatak, Sitangshu Bhattacharya, S. Bhowmik, R. Benedictus and S Choudhury, "The Einstein relation in quantum wires of III-V, ternary and quaternary materials in the presence of light waves: simplified theory, relative comparison and suggestion for experimental determination", Journal of Applied Physics, vol. 103, pp. 094314-094335, (2008). link.

  42. Sitangshu Bhattacharya, Samit Pahari, Ranjita Sarkar, S. Ghosh and Kamakahya Prasad Ghatak, "The diffusivity-mobility-ratio in heavily doped nonlinear optical, optoelectronic and related materials", Physica B, vol. 403, pp. 3635-3652, (2008). link.

  43. Sitangshu Bhattacharya, N.C. Paul, Debashis De and Kamakahya Prasad Ghatak, "Influence of light on the Debye screening length in ultrathin films of optoelectronic materials", Physica B, vol. 403, pp.4139-4150, (2008). link.

  44. Kamakahya Prasad Ghatak, Sitangshu Bhattacharya, S. K. Biswas, A. De and A. K. Dasgupta, "A simple theoretical analysis of the effective electron mass in III-V, ternary and quaternary materials in the presence of light waves", IoP Physica Scripta, vol. 75, pp-820-836, (2007). link.

  45. Kamakahya Prasad Ghatak and Sitangshu Bhattacharya, "Influence of light on the Debye screening length in III-V, ternary and quaternary materials", Journal of Applied Physics, vol. 102, pp-073704-073721, (2007). link.

  46. P. K. Chakraborty, Sitangshu Bhattacharya and Kamakahya Prasad Ghatak, "Simple theory of the interband optical absorption in an external electric field for optoelectronic materials", Journal of Applied Physics, vol. 98, pp. 053517-1-053517-10, (2005). link.

Patent

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  1. Rekha Verma, Sitangshu Bhattacharya and Santanu Mahapatra, ”A graphene based thermoelectric generator”, Applied for Indian patent, Application Number: 3625/CHE/2013, August 2013.

Conferences

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  1. Dipankar Saha, Sitangshu Bhattacharya and Santanu Mahapatra, “Modeling of Sheet Concentration and Temperature Dependent Resistivity of a Suspended Monolayer Graphene.” IEEE 2nd International Conference on Emerging Electronics (ICEE), December 3-6, Bangalore-India, (2014), pages: 1-4. link..

  2. Rekha Verma, Sitangshu Bhattacharya and Santanu Mahapatra, “Electro-thermal aspects in carbon based interconnects”, TechConnect World, Summit and Showcase 2013, Nanotech Conference and Expo 2013, May13-16, (2013), Washington DC, USA.

  3. Rekha Verma,Santanu Mahapatra, “Electro-thermal modeling in Metallic Single Walled Carbon Nanotube Interconnects”, MOS-AK/GSA India (2012), International Workshop on Device Modeling for Microsystems, 2012 , India.

  4. Sitangshu Bhattacharya, Ch. Raju and Ramsesh Chandra Mallik, "Electron Mean Free Path in PbTe Quantum Wires", AIP CONFERENCE PROCEEDING, vol. 1349, pp. 949-950, July 15, (2011), SOLID STATE PHYSICS, PROCEEDINGS OF THE 55TH DAE SOLID STATE PHYSICS SYMPOSIUM (2010). link.

  5. Sitangshu Bhattacharya, Debashis De and Kamakhya Prasad Ghatak, "Simple theoretical analysis of the photoemission from quantum confined non-linear optical, optoelectronic and related materials" International Workshop on Physics of Semiconductor Devices (IWPSD), pp. 897 - 900, held at IIT Bombay (2007).

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