The DX centre
T.N. Morgan
Semiconductor Science and Technology
We study a tight-binding model with a singlet nearest-neighbor pairing interaction on a two-dimensional square lattice. In the strong coupling regime it undergoes an Ising-like antiferromagnetic phase transition for all fillings. For this reason we include both an antiferromagnetic and a superconducting order parameter within the symmetry-broken Hartree-Fock approximation and derive the phasediagram. In the half-filled state, the system orders antiferromagnetically; otherwise superconductivity occurs and might coexist with antiferromagnetism. The implications on the specific heat and Pauli susceptibility are discussed. © 1994.
T.N. Morgan
Semiconductor Science and Technology
A. Ney, R. Rajaram, et al.
Journal of Magnetism and Magnetic Materials
R. Ghez, J.S. Lew
Journal of Crystal Growth
Surendra B. Anantharaman, Joachim Kohlbrecher, et al.
MRS Fall Meeting 2020