Subhadip Nath

6 Questions 4 Answers 0 Followers

Questions related from Subhadip Nath

Is Lattice deformation zero in absence of electron-phonon interaction?

Lattice deformation is an important parameter for calculation in strongly correlated systems with electron-phonon interaction (EPI). In Hubbard holstein model used for studying strongly correlated...

10 October 2014 6,338 5 View

What is finite size effect in cluster calculations?

Finite size effect arises in calculations made on small clusters for Hubbard model and its variants (our work). It decreases with increase on cluster size.Is there any other way to reduce finite...

08 August 2014 1,310 2 View

How can we mark the transition of the weak coupling limit with that of strong coupling limit in the Hubbard Holstein model?

In the Hubbard-Holstein model of electron-phonon interaction there are several parameters in the Hamiltonian like \lambda, \omega etc... Smaller values of \lambda is for weak coupling and larger...

09 September 2013 8,851 0 View

Can any interesting features be observed at 50% doping for high Tc superconductors (mainly cuprates)?

We are working in the field of strongly correlated electron systems. Our present research interest includes frustration in high Tc superconductors (mainly cuprates). For this we employ exact...

07 July 2013 2,799 1 View

What is the range of electron-phonon (EP) interaction in High Tc superconductors ?

By studying models on superconductivity, it is observed that S0 (onsite) and S1 (NN sites) bipolarons are formed, which is confirmed by various authors. But do S2 (next-nn) or other such...

04 April 2013 3,107 13 View

What is the magnitude of NNN hopping amplitude in cuprates?

Various experimental and theoretical findings suggests the effect of next-nearest-neighbor (NNN) hopping amplitude t' on the physical properties of the cuprates. The magnitude of t' is found to be...

04 April 2013 6,704 1 View