82 citations · 136 across the 5 of their papers we have counts for
5 papers
Quadratic X-ray magneto-optical effect in reflection at the M-edges of 3d transition metals
S. Valencia, A. Kleibert, A. Gaupp +5
We have observed a quadratic x-ray magneto-optical effect in near-normal incidence reflection at the M-edges of iron. The effect appears as the magnetically induced rotation of ca.…
Mn valence instability in La2/3Ca1/3MnO3 thin films
S. Valencia, A. Gaupp, W. Gudat +5
A Mn valence instability on La2/3Ca1/3MnO3 thin films, grown on LaAlO3 (001)substrates is observed by x-ray absorption spectroscopy at the Mn L-edge and O K-edge. As-grown samples,…
Magnetic dead layers in La2/3Ca1/3MnO3 thin films probed by X-ray magnetic circular dichroism in reflection
S. Valencia, A. Gaupp, W. Gudat +3
Surface magnetic properties of perovskite manganites have been a recurrent topic during last years since they play a major role in the implementation of magnetoelectronic devices.…
Formation of Mn2+ in La2/3Ca1/3MnO3 Thin Films due to Air Exposure
S. Valencia, A. Gaupp, Ll. Abad +5
We report on the chemical stability of La2/3Ca1/3MnO3 thin films. X-ray absorption spectroscopy at the Mn L-edge and O K-edge makes evident deviations from the nominally expected (…
Disorder effects in electronic structure of substituted transition metal compounds
D. D. Sarma, A. Chainani, S. R. Krishnakumar +9
Investigating LaNi(1-x)M(x)O3 (M = Mn and Fe), we identify a characteristic evolution of the spectral function with increasing disorder in presence of strong interaction effects ac…