Phase transitions in quasi-one-dimensional system of weakly bound one-dimensional metallic filaments
Prigodin V.N., Firsov Yu.A.
We investigate the dependence of the phase-transition temperature Tc in a quasi-one-dimensional system on the value w of the transverse kinetic coupling, which characterizes the ease of tunneling of electrons from filament to filament. With allowance for one-dimensional fluctuation effects (carried out in second order of the renormalization-group method), it is shown that Tc can have a maximum in the region of small w.