INDIAN INSTITUTE OF SCIENCE EDUCATION AND RESEARCH KOLKATA

... towards excellence in science

An Autonomous Institution, Under the Ministry of Education, Government of India

Bhavtosh Bansal

Professor
Dept: Physical Sciences (DPS)
E-mail: bhavtosh [at] iiserkol.ac.in

All Publications:

  1. Roy, Basabendra and Bansal, Bhavtosh. 2024."Exciton-to-plasma Mott crossover in silicon." The European Physical Journal D, 78, 1
  2. Kundu, Satyaki; Patel, Ranjan Kumar; Middey, Srimanta and Bansal, Bhavtosh. 2023."Dynamic hysteresis at a noisy saddle node shows power-law scaling but nonuniversal exponent." Physical Review E, 108, 024101
  3. Mukhuti, Kingshuk; Krishnadas, Anjana; Bhattacharya, Rupak Kumar; Adusumalli, Venkata NKB; Mahalingam, Venkataramanan; Pal, Bipul and Bansal, Bhavtosh. 2023."Optical coherence in the upconversion luminescence of Er3+." Optical Materials, 142, 114058
  4. Mukhuti, Kingshuk and Bansal, Bhavtosh. 2023."Diamagnetism-Induced Suppression of the Resonance Energy Transfer." The Journal of Physical Chemistry C, 127, 13130
  5. Mukhuti, Kingshuk; Mandal, Arnab; Roy, Basabendra; Bhattacharyya, Sayan and Bansal, Bhavtosh. 2022."Carrier thermalization and zero-point bandgap renormalization in halide perovskites from the Urbach tails of the emission spectrum." Applied Physics Letters, 121, 182104
  6. Bar, Tapas and Bansal, Bhavtosh. 2021."Absolute calibration of the latent heat of transition using differential thermal analysis." Review of Scientific Instruments, 92, 075106
  7. Mukhuti, Kingshuk; Sinha, Sudip; Sinha, Subhasis and Bansal, Bhavtosh. 2021."Dissipation-induced symmetry breaking: Emphanitic transitions in lead-and tin-containing chalcogenides and halide perovskites." Applied Physics Letters, 118, 162111
  8. Mukhuti, Kingshuk; Adusumalli, V. N. K. B.; R., Kamal Raj; Bansal, Bhavtosh and Mahalingam, Venkataramanan. 2020."Competition between two- and three-photon upconversion in Er3+ doped microcrystals." Journal of Luminescence, 227, 117542
  9. Mukhuti, Kingshuk; Adusumalli, V. N. K. B.; Koppisetti, Heramba V. S. R. M.; Bansal, Bhavtosh and Mahalingam, Venkataramanan. 2020."Highly Sensitive Upconverting Nanoplatform for Luminescent Thermometry from Ambient to Cryogenic Temperature." ChemPhysChem, 21, 1731-1736
  10. Kundu, Satyaki; Bar, Tapas; Nayak, Rajesh Kumble and Bansal, Bhavtosh. 2020."Critical Slowing Down at the Abrupt Mott Transition: When the First-Order Phase Transition Becomes Zeroth Order and Looks Like Second Order." Physical Review Letters, 124, 095703
  11. Roy, Basabendra; Mukhuti, Kingshuk and Bansal, Bhavtosh. 2019."Experimental determination of the bare energy gap of GaAs without the zero-point renormalization." Journal of Physics: Condensed Matter, 32, 10LT01
  12. Mukhuti, Kingshuk; Adusumalli, Venkata N. K. B.; Mahalingam, Venkataramanan and Bansal, Bhavtosh. 2019."Classification of Transitions in Upconversion Luminescence of Lanthanides by Two-Dimensional Correlation Analysis." The Journal of Physical Chemistry A, 123, 2457-2461
  13. Mondal, Richarj; Roy, Basabendra; Pal, Bipul and Bansal, Bhavtosh. 2018."How pump–probe differential reflectivity at negative delay yields the perturbed-free-induction-decay: theory of the experiment and its verification." Journal of Physics: Condensed Matter, 30, 505902
  14. Bar, Tapas; Choudhary, Sujeet Kumar; Ashraf, Md. Arsalan; Sujith, K. S.; Puri, Sanjay; Raj, Satyabrata and Bansal, Bhavtosh. 2018."Kinetic Spinodal Instabilities in the Mott Transition in V2O3: Evidence from Hysteresis Scaling and Dissipative Phase Ordering." Physical Review Letters, 121, 045701
  15. Bhuyan, Sumi; Mondal, Richarj; Pal, Bipul and Bansal, Bhavtosh. 2018."Distinguishing quantum dot-like localized states from quantum well-like extended states across the exciton emission line in a quantum well." Journal of Physics: Condensed Matter, 30, 105402
  16. Bhattacharya, Rupak; Mondal, Richarj; Khatua, Pradip; Rudra, Alok; Kapon, Eli; Malzer, Stefan; Doehler, Gottfried; Pal, Bipul and Bansal, Bhavtosh. 2015."Measurements of the Electric Field of Zero-Point Optical Phonons in GaAs Quantum Wells Support the Urbach Rule for Zero-Temperature Lifetime Broadening." Physical Review Letters, 114, 047402
  17. Bhattacharya, Rupak; Pal, Bipul and Bansal, Bhavtosh. 2014."Anti-Stokes luminescence in the light of second order perturbation theory." Applied Physics Letters, 105, 191102
  18. Khatua, Pradip; Bansal, Bhavtosh and Shahar, Dan. 2014."Khatua, Bansal, and Shahar Reply." Physical Review Letters, 113, 158902
  19. Ambast, Deepak K. S.; Mondal, Richarj; Pati, Palas Baran; Zade, Sanjio S.; Bansal, Bhavtosh and Pal, Bipul. 2014."Anomalous effects of ultradilute impurities on heat diffusion in liquids." Optics Communication, 334, 184
  20. Bhuyan, Sumi; Das, Sanat K.; Dhar, Sunanda; Pal, Bipul and Bansal, Bhavtosh. 2014."Optical density of states in ultradilute GaAsN alloy: Coexistence of free excitons and impurity band of localized and delocalized states ." Journal of Applied Physics, 116, 023103
  21. Khatua, Pradip; Bansal, Bhavtosh and Shahar, Dan. 2014."Single-Slit Electron Diffraction with Aharonov-Bohm Phase: Feynman’s Thought Experiment with Quantum Point Contacts." Physical Review Letters, 112, 010403
  22. Bhuyan, Sumi; Mondal, Richarj; Khatua, Pradip; Semtsiv, M.; Masselink, W. T.; Leotin, Jean; Pal, Bipul and Bansal, Bhavtosh. 2013."Light emission despite doubly-forbidden radiative transitions in AlP/GaP quantum wells: Role of localized states." Journal of Applied Physics, 114, 163101
  23. Bansal, Bhavtosh; Ghosh, Rituparna and Venkataraman, V.. 2013."Scattering of carriers by charged dislocations in semiconductors." Journal of Applied Physics, 113, 163705
  24. Mondal, Richarj; Bansal, Bhavtosh; Mandal, Arjun; Chakrabarti, Subhananda and Pal, Bipul. 2013."Pauli blocking dynamics in optically excited quantum dots: A picosecond excitation-correlation spectroscopic study." Physical Review B, 87, 115317
  25. Bhattacharya, Rupak; Pal, Bipul and Bansal, Bhavtosh. 2012."On conversion of luminescence into absorption and the van Roosbroeck-Shockley relation." Applied Physics Letters, 100, 222103
  26. Hayne, Manus and Bansal, Bhavtosh. 2012."High-field magneto-photoluminescence of semiconductor nanostructures." Luminescence - The Journal of Biological and Chemical Luminescence, 27, 179 -196
  27. Nuytten, T.; Hayne, M.; Bansal, Bhavtosh; Liu, H. Y.; Hopkinson, M. and Moshchalkov, V. V.. 2011."Charge separation and temperature-induced carrier migration in Ga1-xInxNyAs1-y multiple quantum wells." Physical Review B, 84, 045302
  28. Arora, Ashish; Karmakar, Biswajit; Sharma, Sayantan; Schardt, Michael; Malzer, Stefan; Bansal, Bhavtosh; Döhler, Gottfried and Arora, Brij M.. 2010."Fiber optic based system for polarization sensitive spectroscopy of semiconductor quantum structures." Review of Scientific Instruments 81, 083901 (2010), 81, 083901
  29. Perenboom, J A. A. J.; Frings, P.; Béard, J.; Bansal, B.; Herlach, F.; Peng, Tao and Zherlitsyn, S.. 2010."Optimization of Large Multiple Coil Systems for Pulsed Magnets." Journal of Low Temperature Physics, 159, 336


  1. Bhattacharya, Arnab and Bansal, Bhavtosh. 2014." Self-Assembly in semiconductor epitaxy: From growth mechanisms to device applications", "Handbook of Crystal Growth". Elsevier, ISBN: 9780444633040