Publications (8)
Epitaxial growth of Fe3O4 thin films on ZnO and MgO substrates
A. Müller, A. Ruff, M. Paul +9
Magnetite thin fims have been grown epitaxially on ZnO and MgO substrates using molecular beam epitaxy. The film quality was found to be strongly dependent on the oxygen partial pr…
Direct observation of interacting Kondo screened 4f moments in CePt5 with XMCD
C. Praetorius, A. Koehl, B. Muenzing +2
We use x-ray absorption and magnetic circular dichroism to study electronic configuration and local susceptibility of CePt5/Pt(111) surface alloys from well above to well below the…
Mesoscopic electron focusing in topological insulators
P. Sessi, P. RüÃmann, T. Bathon +15
The particle wave duality sets a fundamental correspondence between optics and quantum mechanics. Within this framework, the propagation of quasiparticles can give rise to superpos…
Exploring small energy scales with x-ray absorption and dichroism
C. Praetorius, M. Zinner, P. Hansmann +2
Soft x-ray linear and circular dichroism (XLD, XMCD) experiments at the Ce M edges are being used to determine the energy scales characterizing the Ce degrees of freed…
Electronic tuneability of a structurally rigid surface intermetallic and Kondo lattice: CePt / Pt(111)
C. Praetorius, M. Zinner, A. Köhl +10
We present an extensive study of structure, composition, electronic and magnetic properties of Ce--Pt surface intermetallic phases on Pt(111) as a function of their thickness. The…
Systematics of electronic and magnetic properties in the transition metal doped SbTe quantum anomalous Hall platform
M F. Islam, C. M. Canali, A. Pertsova +19
The quantum anomalous Hall effect (QAHE) has recently been reported to emerge in magnetically-doped topological insulators. Although its general phenomenology is well established,…
Time-resolved X-ray microscopy of nanoparticle aggregates under oscillatory shear
G. K. Auernhammer, K. Fauth, B. Ullrich +3
Of all current detection techniques with nanometer resolution, only X-ray microscopy allows imaging nanoparticles in suspension. Can it also be used to investigate structural dynam…
Study of crystal-field splitting in ultrathin CePt layers by Raman spectroscopy
B. Halbig, U. Bass, J. Geurts +2
Low-temperature electronic properties of rare-earth intermetallics are substantially influenced by the symmetry and magnitude of the crystal electric field. The direct spectroscopi…