Dipolar Sums in the Primitive Cubic Lattices

Cohen, Morrel H.; Keffer, F.

doi:10.1103/physrev.99.1128

Cited by 332 publications

(122 citation statements)

References 11 publications

Supporting

Mentioning

114

Contrasting

Unclassified

Order By: Relevance

“…However, our calculation shows that the difference between the results obtained by the direct sum under a cutoff distance of 8 a and 100 a is no more than 0.5%, and the latter agrees almost exactly with the value obtained from analytical method. 16 Thus in our simulations, the dipolar interaction is included up to a range of 8 a.…”

Section: Monte Carlo Simulationmentioning

confidence: 99%

Theoretical study of the magnetic ordering in rare-earth compounds with face-centered-cubic structure

Duan

Sabiryanov

et al. 2005

Journal of Applied Physics

View full text Add to dashboard Cite

Theoretical study of the magnetic ordering in rare-earth compounds with face-centered-cubic structure" (2004 We present a detailed theoretical study of the magnetic ordering in heavy rare-earth compounds with a face-centered-cubic structure. In addition to the exchange interactions which are counted up to the third nearest neighbors, the effect of the dipolar interactions and magnetic anisotropic effect are also included in our model Hamiltonian. The interactions parameters are obtained from first-principles band-structure calculations by fitting the total energies of different magnetic configurations to the Heisenberg Model. Thus from utilizing the Monte Carlo simulations, we explained the formation of different magnetic structures in the rare-earth compounds.

show abstract

Section: Monte Carlo Simulationmentioning

confidence: 99%

Theoretical study of the magnetic ordering in rare-earth compounds with face-centered-cubic structure

Duan

Sabiryanov

et al. 2005

Journal of Applied Physics

View full text Add to dashboard Cite

show abstract

“…At the transition point C,, = 0 and from (12) we find Rk can be written in the form [5,61 where cy, fi, y are structural constants depending on the type of the lattice, d is the Xote that the concentration dependence of T, (17) differs from that of magnons [3] (k,T, -g2f12Cz~5/03, gfi magnetic moment) because the minimum of the zone is determined by the value cos 6, = 1 in the latter case.…”

Section: Discussionmentioning

confidence: 99%

On the Bose‐Einstein Condensation of Excitons

Kotelnikov

Kochelaev

1977

Physica Status Solidi (b)

View full text Add to dashboard Cite

The Bose-Einstein condensation of Frenkel excitons in molecular crystals is investigated by means of the Green's function method without the use of the effective mass approximation, the kinematic interaction between excitons being taken into account accurately. The spectrum of elementary excitations a t low temperatures in the case of dipole-dipole interaction between molecules is obtained. The temperature of the phase transition and its dependence on the concentration of excitons are estimated.

show abstract

“…A peculiar characteristic feature of dipolar interaction is that the magnetic ordering changes upon the spin-flop transition in the direction transverse to square planes if inter-plane exchange coupling is sufficiently small: vector of magnetic structure k 0 changes according to Eq. (15) if inequality (14) holds. This changing of the magnetic ordering takes place at ξ < ξ c and ψ < ψ c , where critical angles ξ c and ψ c are given by Eqs.…”

Section: Discussionmentioning

confidence: 99%

“…We have calculated dipolar tensor components numerically using dipolar sums computation technique 14 and found that the dependence of Q cc k0 and Q bb k0 on k 03 can be approximated very accurately as follows when Eq. (7) holds:…”

mentioning

confidence: 99%

Spin-flop transition accompanied with changing the type of magnetic ordering

Syromyatnikov

2017

Journal of Magnetism and Magnetic Materials

View full text Add to dashboard Cite

We discuss theoretically rather rear example of spin-flop transition which is accompanied with changing the type of magnetic ordering and which seemingly has not been addressed yet. We demonstrate that changing the type of magnetic ordering can manifest itself in antiferromagnetic (AF) resonance experiments as an apparent peculiar switching of the anisotropy at the transition from the easy-axis type to the easy-plane one. We argue that this kind of spin-flop transition is observed recently by K. Yu. Povarov et al., Phys. Rev. B 87, 214402 (2013) in Cu(pz)2(ClO4)2 (where pz denotes pyrazine), one of the best realizations of spin-Heisenberg AFs on square lattice having a very small anisotropy. We show that the magnetic ordering changes at the spin-flop transition in this material in the direction perpendicular to AF square planes. We examine the microscopic mechanism of such behavior in Cu(pz)2(ClO4)2 and find that dipolar forces and extremely small exchange coupling between spins from neighboring planes are responsible for it.

show abstract

Dipolar Sums in the Primitive Cubic Lattices

Cited by 332 publications

References 11 publications

Theoretical study of the magnetic ordering in rare-earth compounds with face-centered-cubic structure

Theoretical study of the magnetic ordering in rare-earth compounds with face-centered-cubic structure

On the Bose‐Einstein Condensation of Excitons

Spin-flop transition accompanied with changing the type of magnetic ordering

Contact Info

Product

Resources

About