71 citations · 181 across the 12 of their papers we have counts for
12 papers
Electron coherent and incoherent pairing instabilities in inhomogeneous bipartite and nonbipartite nanoclusters
A. N. Kocharian, G. W. Fernando, K. Palandage +1
Exact calculations of collective excitations and charge/spin (pseudo)gaps in an ensemble of bipartite and nonbipartite clusters yield level crossing degeneracies, spin-charge separ…
Novel insights into charge and spin pairing instabilities in nanoclusters
A. N. Kocharian, G. W. Fernando, K. Palandage +1
Electron pairing and ferromagnetism in various cluster geometries are studied with emphasis on tetrahedron and square pyramid under variation of interaction strength, electron dopi…
Computational approach to finite size and shape effects in iron nanomagnets
Michael McGuigan, James Davenport, James Glimm
We develop and validate a computational approach to nanomagnets. It is built on the spin wave approximation to a Heisenberg ferromagnet whose parameters can be calculated from a fi…
Exact Thermodynamics of Pairing and Charge-spin Separation Crossovers in Small Hubbard Nanoclusters
A. N. Kocharian, G. W. Fernando, T. Wang +2
The exact numerical diagonalization and thermodynamics in an ensemble of small Hubbard clusters in the ground state and finite temperatures reveal intriguing insights into the nasc…
Electronic Structure of ZnO nanowire
Xiao Shen, Mark R. Pederson, Jin-Cheng Zheng +3
This paper presents two first-principles calculations on the lattice- and electronic- structures of a small-diameter infinite and truncated ZnO nanowire. The two calculations show…
An exact study of charge-spin separation, pairing fluctuations and pseudogaps in four-site Hubbard clusters
Armen N. Kocharian, Gayanath W. Fernando, Kalum Palandage +1
An exact study of charge-spin separation, pairing fluctuations and pseudogaps is carried out by combining the analytical eigenvalues of the four-site Hubbard clusters with the gran…