Zobrazeno 1 - 10
of 148
pro vyhledávání: '"Plumer, M L"'
We study a Heisenberg-Dzyaloshinskii-Moriya Hamiltonian on AB-stacked kagome bilayers at finite temperature. In a large portion of the parameter space, we observe three transitions upon cooling the system: a crossover from Heisenberg to the XY chiral
Externí odkaz:
http://arxiv.org/abs/2305.07726
We perform a symmetry analysis of the ABC-stacked kagome planes of Mn atoms common to the $L1_2$ Mn$_3$X and antiperovskite Mn$_3$AB alloys. In addition to the single-ion-anisotropy and Kitaev-type anisotropic exchange known to stabilize 120{\deg} sp
Externí odkaz:
http://arxiv.org/abs/2211.17243
Publikováno v:
Phys. Rev. B 103, 144401 (2021)
$\mathrm{Mn}_3\mathrm{X}$ compounds in which the magnetic $\mathrm{Mn}$ atoms form AB-stacked kagome lattices have received a tremendous amount of attention since the observation of the anomalous Hall effect in $\mathrm{Mn}_3\mathrm{Ge}$ and $\mathrm
Externí odkaz:
http://arxiv.org/abs/2012.15280
Autor:
LeBlanc, M. D., Aczel, A. A., Granroth, G. E., Southern, B. W., Yan, J. -Q., Nagler, S. E., Whitehead, J. P., Plumer, M. L.
Publikováno v:
Phys. Rev. B 104, 014427 (2021)
Exchange interactions up to fourth nearest neighbor are shown within a classical local-moment Heisenberg approach to be important to model inelastic neutron scattering data on the fcc kagome antiferromagnet IrMn$_3$. Spin wave frequencies are calcula
Externí odkaz:
http://arxiv.org/abs/1807.06659
A hybrid kMC/LLG algorithm is used to simulate experimental MH hysteresis loops for dual layer ECC media. The calculation of the rate coefficients and difficulties arising from low energy barriers, a fundamental problem of the kMC method, are discuss
Externí odkaz:
http://arxiv.org/abs/1703.07018
Properties of thin films of geometrically frustrated ABC stacked antiferromagnetic kagome layers are examined using Metropolis Monte Carlo simulations. The impact of having an easy-axis anisotropy on the surface layers and cubic anisotropy in the int
Externí odkaz:
http://arxiv.org/abs/1510.05924
Rate coefficients of the Arrhenius-Neel form are calculated for thermally activated magnetic moment reversal for dual layer exchange-coupled composite (ECC) media based on the Langer formalism and are applied to study the sweep rate dependence of MH
Externí odkaz:
http://arxiv.org/abs/1509.02047
The results of extensive Monte Carlo simulations of classical spins on the two-dimensional kagome lattice with only dipolar interactions are presented. In addition to revealing the six-fold degenerate ground state, the nature of the finite-temperatur
Externí odkaz:
http://arxiv.org/abs/1504.08036
Spin wave calculations demonstrate that the macroscopic continuous degeneracy associated with the two-dimensional kagome Heisenberg spin lattice persists in the case of the stacked fcc structure giving rise to zero energy modes in three dimensions. T
Externí odkaz:
http://arxiv.org/abs/1403.6352
Publikováno v:
Phys. Rev. Lett. 109, 167206 (2012)
High resolution ultrasonic velocity measurements have been used to determine the temperature -- magnetic-field phase diagram of the monoclinic multiferroic CuO. A new transition at TN3 = 230 K, corresponding to an intermediate state between the antif
Externí odkaz:
http://arxiv.org/abs/1205.5229