Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Scaramucci, Andrea"'
Publikováno v:
Phys. Rev. B 95, 104419 (2017)
We determine the viability of 4-layered Aurivillius phases to exhibit long-range magnetic order above room temperature. We use Monte Carlo simulations to calculate transition temperatures for an effective Heisenberg model containing a minimal set of
Externí odkaz:
http://arxiv.org/abs/1612.07343
Autor:
Scaramucci, Andrea, Shinaoka, Hiroshi, Mostovoy, Maxim V., Lin, Rui, Mudry, Christopher, Müller, Markus
Publikováno v:
Phys. Rev. Research 2, 013273 (2020)
We discuss the stability of ferromagnetic long-range order in three-dimensional classical XY ferromagnets upon substitution of a small subset of equally oriented bonds by impurity bonds, on which the ferromagnetic exchange J_perp > 0 is replaced by a
Externí odkaz:
http://arxiv.org/abs/1610.00784
Autor:
Scaramucci, Andrea, Shinaoka, Hiroshi, Mostovoy, Maxim V., Müller, Markus, Mudry, Christopher, Troyer, Matthias, Spaldin, Nicola A.
Publikováno v:
Phys. Rev. X 8, 011005 (2018)
Multiferroism can originate from the breaking of inversion symmetry caused by magnetic-spiral order. The usual mechanism for stabilizing a magnetic spiral is competition between magnetic exchange interactions differing by their range and sign, such a
Externí odkaz:
http://arxiv.org/abs/1610.00783
Autor:
Heuver, Jeroen A., Scaramucci, Andrea, Blickenstorfer, Yves, Matzen, Sylvia, Spaldin, Nicola A., Ederer, Claude, Noheda, Beatriz
We show that the magnetic anisotropy in spinel-structure CoCr$_2$O$_4$ thin films exhibits a strain dependence in which compressive strain induces an out-of-plane magnetic easy axis and tensile strain an in-plane easy axis, exactly opposite to the be
Externí odkaz:
http://arxiv.org/abs/1508.02165
Publikováno v:
Phys. Rev. B 91, 165122 (2015)
We use ab initio electronic structure calculations within the generalized gradient approximation (GGA+U) to density functional theory (DFT) to determine the microscopic exchange interactions in the series of orthorhombic rare-earth manganites, o-$R$M
Externí odkaz:
http://arxiv.org/abs/1412.3702
We discuss the calculation of crystal field splittings using Wannier functions and show how the ligand field contributions can be separated from the bare Coulomb contribution to the crystal field by constructing sets of Wannier functions incorporatin
Externí odkaz:
http://arxiv.org/abs/1405.3804
We use symmetry analysis and first principles calculations to show that the linear magnetoelectric effect can originate from the response of orbital magnetic moments to the polar distortions induced by an applied electric field. Using LiFePO4 as a mo
Externí odkaz:
http://arxiv.org/abs/1207.2916
We calculate the temperature-dependent magnetoelectric response of Cr2O3 from first principles. The form of the dominant magnetoelectric coupling is determined using symmetry arguments, its strength is found using ab initio methods, and the temperatu
Externí odkaz:
http://arxiv.org/abs/1004.2070
We study the structure of domain walls in multiferroic magnets with the conical spiral ordering. We formulate a simple spin model which has a conical spiral ground state in absence of magnetic anisotropies. We find a transition from the regime where
Externí odkaz:
http://arxiv.org/abs/0906.5298
Akademický článek
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