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19982022
most citedCatastrophic rearrangement of a compact star due to the quark core formation

53 citations

Showing cond-mat.str-elShow all

7 papers · 1 filter

cond-mat.str-el2008

Quasi-one dimensional graphite ribbon structures in presence of magnetic field and on-site Coulomb correlation at half-filling

Jayeeta Chowdhury, Shreekantha Sil, S. N. Karmakar +1

We have presented the role of the Coulomb interaction () and the magnetic field () on the ground state properties of the quasi-one dimensional graphite ribbon structure…

cond-mat.str-el2005★ 1 cited

Effect of Fibonacci Modulation On Superconductivity

Sanjay Gupta, Shreekantha Sil, Bibhas Bhattacharyya

We have studied finite-sized single band models with short range pairing interactions between electrons in presence of diagonal Fibonacci modulation in one dimension. Two models, n…

cond-mat.str-el2004★ 34 cited

Field-induced disorder in a gapped spin system with non-magnetic impurities

H. -J. Mikeska, Asimkumar Ghosh, A. K. Kolezhuk

We study S=1/2 dimers which are weakly coupled by three-dimensional antiferromagnetic interactions J'. It is commonly known that doping with non-magnetic impurities immediately ind…

cond-mat.str-el2003★ 5 cited

Half-filled Hubbard ring with alternating site potentials in a magnetic field

Sanjay Gupta, Shreekantha Sil, Bibhas Bhattacharyya

We have studied a Hubbard ring with alternating site potentials for half filling in presence of a magnetic flux. Using a mean field approach we have calculated the conductivity of…

cond-mat.str-el2001★ 6 cited

Spin dynamics of a one-dimensional spin-1/2 fully anisotropic Ising-like antiferromagnet in a transverse magnetic field

Asimkumar Ghosh

We consider the one-dimensional Ising-like fully anisotropic S=1/2 Heisenberg antiferromagnetic Hamiltonian and study the dynamics of domain wall excitations in the presence of tra…

cond-mat.str-el1999★ 7 cited

Hubbard model with bond-charge interaction on a triangular lattice: a renormalization group study

Bibhas Bhattacharyya, Shreekantha Sil

We have studied the Hubbard model with bond-charge interaction on a triangular lattice for a half-filled band. At the point of particle-hole symmetry the model could be analyzed in…

cond-mat.str-el1998★ 6 cited

Exact ground and excited states of a t-J ladder doped with two holes

Indrani Bose, Saurabh Gayen

A two chain ladder model is considered described by the strong coupling Hamiltonian. For the case of two holes moving in a background of antiferromagnetical…