Spin–lattice coupling in iron-pnictide superconductors: a model for possible continuous phase transition
محورهای موضوعی : Journal of Theoretical and Applied Physics
Chinedu E Ekuma
1
(
Department of Physics, Computational Material Physics Group, University of Port Harcourt;Department of Physics and Astronomy, Louisiana State University
)
Ephriam O Chukwuocha
2
(
Department of Physics, Computational Material Physics Group, University of Port Harcourt
)
Michael C Onyeaju
3
(
Department of Physics, Computational Material Physics Group, University of Port Harcourt
)
کلید واژه: Fe, Pnictide superconductors, Magnetic moment, Continuous phase transition, Euler, Lagrange equation, Ehrenfest theory, Ginzburg, Landau theory, 64.60.av, 82.35.Jk, 74.20.De, 74.40, N, 74.70.Kn,
چکیده مقاله :
AbstractA systematic study of the dependence of the local magnetic moment, M, on the Fe-Pn layer separation has been carried out. Within the Ehrenfest classification of orders of phase transition, we propose a continuous (>2) phase transition for studying the dependence of M on the Fe-Pn layer separation. Our model is tested with available experimental data.
