Wigner 111 - Colourful and Deep

Session

Solid Sate Physics

12 Nov 2013, 14:00

Ceremonial Hall (Díszterem) (Hungarian Academy of Sciences)

42. A first-principles description of the anomalous and spin Hall effects in disordered alloys

Prof. Hubert Ebert

12/11/2013, 14:00

A theoretical description of the anomalous Hall effect (AHE) [1] and spin Hall effect (SHE) [2] based on the Kubo linear response formalism is presented giving the corresponding conductivity tensors via an appropriate form of the Kubo-Streda and Kubo-Bastin equations. The underlying electronic structure is treated using the fully relativistic multiple scattering or Korringa-Kohn-Rostoker (KKR)...

82. The Fermi surface of PdCrO2

Prof. Stephen Dugdale (University of Bristol, UK)

12/11/2013, 14:25

Geometrically frustrated magnetic materials exhibit complex magnetic order and the influence of this frustration (amongst localised spins) on the more delocalised electrons can lead to strongly correlated behaviour. The triangular antiferromagnet PdCrO$_{2}$ is an example of a frustrated metallic magnet. Having the delafossite structure (which consists of alternately stacked layers...

47. Chiral asymmetry in nanomagnetism

Prof. Laszlo Szunyogh

12/11/2013, 14:50

The asymmetric exchange interaction, discovered by Dzyaloshinsky and Moriya at mid of the last century, has long been known in bulk systems, e.g., in context to weak ferromagnetism. Only recently, the rapidly developing research of magnetic nanostructures revealed many novel and challenging consequences of the DM interactions, such as the homochirality of domain walls, the chiral asymmetry of...

46. Recent Advances in the Korringa‐Kohn‐Rostoker Green Function Method

Prof. Rudolf ZELLER

12/11/2013, 15:15

Similar to the historical Wigner-Seitz (cellular) method for the solution of the Schroedinger equation in solids, the all-electron full-potential Korringa-Kohn-Rostoker (KKR) Green function (GF) method uses a partitioning of space into atomic (Wigner-Seitz) cells. However, instead of wave-function matching at the cell boundaries, the KKR-GF method is based on the direct solution of integral...

45. Magnetic materials modelling ab-initio: fluctuating Wigner-Seitz cell magnetic moments, electron scattering resonances and strong electron correlations

Prof. Julie Staunton

12/11/2013, 16:00

Density functional theory (DFT) is extensively used in ab-initio materials modelling. This can be extended by identifying different time scales amongst the collective electronic degrees of freedom. For example, magnetic excitations, which trigger the loss of magnetic order in a magnet with rising temperature, are described by attaching to all Wigner-Seitz cells in a solid local...

95. Identification and characterization of solid-state single photon emitters

Dr Ádám Gali (Wigner RCP of the HAS, BME)

12/11/2013, 16:25