134 citations · 253 across the 5 of their papers we have counts for
5 papers
Multiple Photodetachment of Oxygen Anions via K-Shell Excitation and Ionization: Direct Double-Detachment Processes and Subsequent Deexcitation Cascades
S. Schippers, A. Hamann, A. Perry-Sassmannshausen +6
Experimental cross sections for m-fold photodetachment (m=2-5) of oxygen anions via K-shell excitation and ionization were measured in the photon-energy range of 525-1500 eV using…
Evidence for a charge collective mode associated with superconductivity in copper oxides from neutron and x-ray scattering measurements of LaSrCuO
S. R. Park, T. Fukuda, A. Hamann +5
In superconducting copper oxides some Cu-O bond-stretching phonons around 70meV show anomalous giant softening and broadening of electronic origin and electronic dispersions have l…
Effects of charge inhomogeneities on elementary excitations in La_{2-x}Sr_xCuO_4
S. R. Park, A. Hamann, L. Pintschovius +7
Purely local experimental probes of many copper oxide superconductors show that their electronic states are inhomogeneous in real space. For example, scanning tunneling spectroscop…
Magnetic Blue Phase in the Chiral Itinerant Magnet MnSi
A. Hamann, D. Lamago, Th. Wolf +2
Chiral nematic liquid crystals sometimes form blue phases characterized by spirals twisting in different directions. By combining model calculations with neutron-scattering experim…
Superconductivity coexisting with phase-separated static magnetic order in (Ba,K)FeAs, (Sr,Na)FeAs and CaFeAs
T. Goko, A. A. Aczel, E. Baggio-Saitovitch +22
The recent discovery and subsequent developments of FeAs-based superconductors have presented novel challenges and opportunities in the quest for superconducting mechanisms in corr…