441 citations · 5.2k across the 83 of their papers we have counts for
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Evolution of the electronic structure with size in II-VI semiconductor nanocrystals
Sameer Sapra, D. D. Sarma
In order to provide a quantitatively accurate description of the band gap variation with sizes in various II-VI semiconductor nanocrystals, we make use of the recently reported tig…
Remarkable thermal stability of BF3-doped polyaniline
Debangshu Chaudhuri, Prashanth W. Menezes, D. D. Sarma
We show that the recently synthesized BF3-doped polyaniline (PANI) exhibits remarkable stability against thermal ageing. Unlike the protonated PANI, which shows rapid degradation o…
Realistic Tight Binding Model for the Electronic Structure of II-VI Semiconductors
Sameer Sapra, N. Shanthi, D. D. Sarma
We analyze the electronic structure of group II-VI semiconductors obtained within LMTO approach in order to arrive at a realistic and minimal tight binding model, parameterized to…
An accurate description of quantum size effects in InP nanocrystallites over a wide range of sizes
Sameer Sapra, Ranjani Viswanatha, D. D. Sarma
We obtain an effective parametrization of the bulk electronic structure of InP within the Tight Binding scheme. Using these parameters, we calculate the electronic structure of InP…
Magnetic study of an amorphous conducting polyaniline
Debangshu Chaudhuri, Ashwani Kumar, D. D. Sarma +3
We show that newly found BF3-doped polyaniline, though highly conducting, remains amorphous. Magnetic studies reveal many unusual properties, while suggesting that the intrinsic co…
Pressure-tuning of the electron-phonon coupling: the insulator to metal transition in manganites
P. Postorino, A. Congeduti, P. Dore +5
A comprehensive understanding of the physical origin of the unique magnetic and transport properties of A_(1-x)A'^xMnO_3 manganites (A = trivalent rare-earth and A' = divalent alka…