Title of article :
Spin-lattice coupling in iron-pnictide superconductors: a model for possible continuous phase transition
Author/Authors :
Ekuma, Chinedu E. University of Port Harcourt - Department of Physics, Computational Material Physics Group, Nigeria , Ekuma, Chinedu E. Louisiana State University - Department of Physics and Astronomy, USA , Chukwuocha, Ephriam O. University of Port Harcourt - Department of Physics, Computational Material Physics Group, Nigeria , Onyeaju, Michael C. University of Port Harcourt - Department of Physics, Computational Material Physics Group, Nigeria
Abstract :
A 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.
Keywords :
Fe , Pnictide superconductors , Magnetic moment , Continuous phase transition , Euler , Lagrange equation , Ehrenfest theory , Ginzburg , Landau theory
Journal title :
Journal of Theoretical and Applied Physics
Journal title :
Journal of Theoretical and Applied Physics
