Research Interests
Mesoscopic physics, low temperature transport, semiconductor heterostructures, thin film growth, small scale instrumentation, and magnetic levitation.
Courses Offered
| EP 426 | Physics of Quantum Devices (January 2011, 12, 13, 14, 15) | Lecture Notes |
| PH 409 | Introduction to Condensed Matter Physics (July 2011, 12, 13) | Lecture Notes |
| EP 431 | Semiconductor Physics (July 2014, 15, 16) | Lecture Notes |
| PH 108 | Introduction to Electricity & Magnetism (January 2016, 17, 18) | Lecture Notes |
| PH 517 | Analytical Techniques (July 2017, 18, 19) | Lecture Notes |
| PH 444 | Electromagnetic Theory (January 2020) | Lecture Notes |
Selected Publications
2019
Effect of invasive probes on measurement of magneto-transport in macroscopic samples : A gallium nitride case study
A.K. Jain, H. Chakraborti, B.P. Joshi, B. Pal, M.Monish, S.M. Shivaprasad, S. Dhar, K. Das Gupta.
2019
Experimental evidence of a very thin superconducting layer in epitaxial indium nitride
B. Pal, B.P. Joshi, H. Chakraborti, A.K. Jain, B.K. Barik, K. Ghosh, S. Bhunia, A. Laha, S. Dhar, K. Das Gupta,
2017
Effect of paramater mismatch on the synchronization of strongly coupled self sustained oscillators
N. Chakrabarty, A.K. Jain, Nijil Lal C.K., K. Das Gupta, P. Parmananda,
2016
Switching between attractive and repulsive Coulomb interaction mediated drag in an ambipolar GaAs/AlGaAs bilayer device
B. Zheng, A.F. Croxall, J. Waldie, K. Das Gupta, F. Sfigakis, I. Farrer, H.E. Beere, D.A. Ritchie,
2015
Fabrication and characterisation of Gallium Arsenide ambipolar quantum point contacts
A. R. Hamilton, J. C. H. Chen , O. Klochan , A.P. Micolich , K. Das Gupta , F. Sfigakis , D. A. Ritchie , K. Trunov , D.Reuter , A. D. Wieck,
Applied Physics Letters, 106 (18), 183504 (2015)
2013
Demonstration and characterization of an ambipolar high mobility transistor in an undoped GaAs/AlGaAs quantum well
A. F. Croxall, B. Zheng, F. Sfigakis, K. Das Gupta, I. Farrer, C. A. Nicoll, H. E. Beere, D. A. Ritchie.
Applied Physics Letters, 102, 082105 (2013)
2012
Linear non-hysteretic gating of a very high density 2DEG in an undoped metal–semiconductor–metal sandwich structure
K Das Gupta, AF Croxall, WY Mak, HE Beere, CA Nicoll, I Farrer, F Sfigakis, DA Ritchie.
Semiconductor Science and Technology, 27(11), 115006 (2012)
2010
Distinguishing impurity concentrations in GaAs and AlGaAs using very shallow undoped heterostructures
W.Y. Mak, K. Das Gupta, H.E. Beere, I. Farrer, F. Sfigakis, D.A. Ritchie.
Applied Physics Letters, 97 (24), 242107 (2010)
2009
Zero-bias anomaly in quantum wires
S Sarkozy, F Sfigakis, K. Das Gupta, I Farrer, D.A. Ritchie, G.A.C. Jones, M. Pepper.
Physical Review B, 79 (16), 161307 (2009)
2008
Patterned backgating using single-sided mask aligners: Application to density-matched electron-hole bilayers
A.F. Croxall, K. Das Gupta, C.A. Nicoll, M. Thangaraj, I. Farrer, D.A. Ritchie, M. Pepper.
Journal of Applied Physics, 104 (11), 113715 (2008)
2002
Critical currents and vortex-unbinding transitions in quench-condensed ultrathin films of bismuth and tin
K. Das Gupta, S.S. Soman, G. Sambandamurthy, N. Chandrasekhar.
Physical Review B, 66 (14), 144512 (2002)
1998
A study of the spatial variation of electric field in highly resistive metal films by scanning tunneling potentiometry
G. Ramaswamy, A.K. Raychaudhuri, K.D. Gupta, G. Sambandamurthy.
Applied Physics A, 66, S435-439 (1998)