9 research outputs found
Ground state, magnetization process and magnetocaloric effect of the exactly tractable spin-electron tetrahedral chain
Full text linkA hybrid spin-electron system on one-dimensional tetrahedral chain, in which
the localized Ising spin regularly alternates with the mobile electron
delocalized over three lattice sites, is exactly investigated using the
generalized decoration-iteration transformation. The system exhibits either the
ferromagnetic or antiferromagnetic ground state depending on whether the
ferromagnetic or antiferromagnetic interaction between the Ising spins and
mobile electrons is considered. The enhanced magnetocaloric effect during the
adiabatic demagnetization suggests a potential use of the investigated system
for low-temperature magnetic refrigeration.Comment: 3 pages, 4 figures, contribution to proceedings of The European
Conference PHYSICS OF MAGNETISM 2014 (PM'14) in Poznan, Polan
On the ground-state degeneracy and entropy in a double-tetrahedral chain formed by the localized Ising spins and mobile electrons
No full textMagnetic Grüneisen parameter and magnetocaloric properties of a coupled spin–electron double-tetrahedral chain
No full textVigorous thermal excitations in a double-tetrahedral chain of localized Ising spins and mobile electrons mimic a temperature-driven first-order phase transition
No full textMagnetic and magnetocaloric properties of the exactly solvable mixed-spin Ising model on a decorated triangular lattice in a magnetic field
No full text
