Electron energy spectrum for a bent chain of nanospheres
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- Eremin, D.A., Ivanov, D.A. & Popov, I.Y. Eur. Phys. J. B (2014) 87: 181. doi:10.1140/epjb/e2014-50002-0
An infinite bent chain of nanospheres connected by wires is considered. We assume that there are δ-like potentials at the contact points. A solvable mathematical model based on the theory of self-adjoint extensions of symmetric operators is constructed. The spectral equation for the model operator is derived in an explicit form. It is shown that the Hamiltonian has non-empty point spectrum. The positions of the eigenvalues for different values of the system parameters (the length of the connecting wires, the intensities of δ-interactions and the bent angle) are found.