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The optical response of T-silicene is highly anisotropic in nature, with a π-interband transition occurring in the visible region. Its thermoelectric performance is better than graphene and is comparable to silicene.

An exact diagonalization calculation of the t-J model on 2D square cluster has been studied for the ground state properties of HTSC. Effect of next-nearest-neighbour hopping and magnetic (both antiferromagnetic and ferromagnetic) interaction on d x 2 −y 2 -wave pairing has been shown. Relative strength of the next-nearest-neighbour interaction with respect to that of near-neighbour interaction for the strongest d x 2 −y 2 -wave pairing has been estimated. A schematic phase diagram is shown. It is shown that a two-sublattice model with antiferromagnetic interaction between them and a small intra-ferromagnetictype interaction in one sublattice favours d x 2 −y 2 -wave superconductivity and moderate negative type NNN hopping adds flavours to this phase.

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