Thermodynamics of the attractive Hubbard chain
Pedro D Sacramento
The thermodynamic Bethe ansatz equations for the attractive Hubbard chain are solved numerically. The entropy, specific heat, gamma -values, band filling, spin and charge susceptibilities are obtained as a function of temperature, interaction strength and chemical potential in zero magnetic field. The dominant states at low temperatures are spin-paired electrons. The spin susceptibility is vanishingly small at low temperatures due to the spin gap.
Journal of Physics Condensed Matter•Jan 2, 1995•6 citations