Supersolid magnetic phase in the two-dimensional Ising-like antiferromagnet with strong single-ion anisotropy

Meleshko, A. G.; Klevets, Ph.N.; Gorelikov, G. A.; Kosmachev, O. A.; Fridman, Yu. A.

doi:10.1134/s1063783417090190

Cited by 2 publications

(1 citation statement)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is a transition between two AFM phases with different lattice magnetization values. At = 0, it is a magnetic quantum PT [33][34][35][36][37][38], at which the ground state of ions in sublattice 2 becomes a singlet one, |−1⟩ → |0⟩, and the singleion anisotropy energy becomes lower. At ̸ = 0, the minimization of the single-ion anisotropy energy at the isostructural PT is associated with a jump-like change in the ionic states: the population is maximum for ions in sublattice 2 with a spin projection of −1 before the transition point and with the zero spin projection after it.…”

Section: Discussionmentioning

confidence: 99%

Magnetization and Magnetocaloric Effect in Antiferromagnets with Competing Ising Exchange and Single-Ion Anisotropies

2020

View full text Add to dashboard Cite

The magnetization of a two-sublattice Ising antiferromagnet with easy-plane single-ion anisotropy, which is accompanied by two phase transitions, has been studied. The both phase transitions are induced by the magnetic field. One of them is isostructural, i.e., the system symmetry remains unchanged and a transition between two antiferromagnetic states with different sublattice magnetizations takes place. The other phase transition occurs when the antiferromagnetic state transforms into the ferromagnetic one. At both phase transitions, the field dependence of the system entropy has two successive positive jumps, which is not typical of ordinary antiferromagnets. On the other hand, if the temperature of the system is higher than the tricritical temperature of the isostructural phase transition, there appears a continuous maximum in the field dependence of the entropy.

show abstract

Section: Discussionmentioning

confidence: 99%

Magnetization and Magnetocaloric Effect in Antiferromagnets with Competing Ising Exchange and Single-Ion Anisotropies

2020

View full text Add to dashboard Cite

show abstract

On the Theory of the Magnetic Quantum Phase Transitions of the First Kind in Van Vleck Ising Antiferromagnet

Lyashenko

Каліта

Локтев

2019

Low Temperature Physics

View full text Add to dashboard Cite

Quantum phase transitions induced by an external magnetic field in a Van Vleck paramagnet with ion spin S = 1, competition of an easy-plane single-particle anisotropy and Ising spin-spin interactions have been investigated. Phase transformations have been described using the Lagrange function, minimization of which is performed by the coefficients of linear combination of the spin wave functions that determine the magnet ground state. It was shown that such an approach is consistent with the Landau theory of phase transitions of the 1st kind. The result obtained showed that the transition from the Van Vleck paramagnetic (singlet) phase to the ferromagnetic phase occurs by forming an intermediate state with only one magnetized spin sublattice.

show abstract

Supersolid magnetic phase in the two-dimensional Ising-like antiferromagnet with strong single-ion anisotropy

Cited by 2 publications

References 52 publications

Magnetization and Magnetocaloric Effect in Antiferromagnets with Competing Ising Exchange and Single-Ion Anisotropies

Magnetization and Magnetocaloric Effect in Antiferromagnets with Competing Ising Exchange and Single-Ion Anisotropies

On the Theory of the Magnetic Quantum Phase Transitions of the First Kind in Van Vleck Ising Antiferromagnet

Contact Info

Product

Resources

About