Charge order in La_{1.8-x}Eu_{0.2}Sr_xCuO_4 studied by resonant soft X-ray diffraction (2008)
Fink, J., Schierle, E., Weschke, E., Geck, J., Hawthorn, D., Wadati, H., ...
Resonant soft X-ray scattering with photon energies near the O K and the Cu L3 edges was used to study charge ordering in the system La_{1.8-x}Eu_{0.2}Sr_xCuO_4 as a function of temperature for x =...
Strong spin-orbit coupling effects on the Fermi surface of Sr2RuO4 and Sr2RhO4 (2008)
Haverkort, M. W., Elfimov, I. S., Tjeng, L. H., Sawatzky, G. A., Damascelli, A.
We present a first-principle study of spin-orbit coupling effects on the Fermi surface of Sr2RuO4 and Sr2RhO4. For nearly degenerate bands, spin-orbit coupling leads to a dramatic change of the Fermi...
Hossain, M. A., Mottershead, J. D. F., Bostwick, A., McChesney, J. L., Rotenberg, E., Liang, R., ...
The discovery of quantum oscillations in the normal-state electrical resistivity of YBa2Cu3O6.5 provides the first evidence for the existence of Fermi surface (FS) pockets in an underdoped cuprate....
Crystal-field level inversion in lightly Mn-doped Sr3Ru2O7 (2008)
Hossain, M. A., Hu, Z., Haverkort, M. W., Burnus, T., Chang, C. F., Klein, S., ...
Sr3(Ru1-xMnx)2O7, in which 4d-Ru is substituted by the more localized 3d-Mn, is studied by x-ray dichroism and spin-resolved density functional theory. We find that Mn impurities do not exhibit the...
Fermi pockets and correlation effects in underdoped YBa2Cu3O6.5 (2007)
Elfimov, I. S., Sawatzky, G. A., Damascelli, A.
The detection of quantum oscillations in the electrical resistivity of YBa2Cu3O6.5 provides direct evidence for the existence of Fermi surface pockets in an underdoped cuprate. We present a...
Two Gaps Make a High Temperature Superconductor? (2007)
Huefner, S., Hossain, M. A., Damascelli, A., Sawatzky, G. A.
One of the keys to the high-temperature superconductivity puzzle is the identification of the energy scales associated with the emergence of a coherent condensate of superconducting electron pairs....
Non-resonant inelastic x-ray scattering involving excitonic excitations (2007)
Haverkort, M. W., Tanaka, A., Tjeng, L. H., Sawatzky, G. A.
In a recent publication Larson \textit{et al.} reported remarkably clear $d$-$d$ excitations for NiO and CoO measured with x-ray energies well below the transition metal $K$ edge. In this letter we...
Determination of the mechanism for resonant scattering in LaMnO3 (2006)
Shen, Q., Elfimov, I. S., Fanwick, P., Tokura, Y., Kimura, T., Finkelstein, K., ...
The resonant multiple Bragg x-ray diffraction is used to study the forbidden (10 (4) over bar) reflection in LaMnO3. Using the interference between the three-beam scattering and resonant scattering...
Orbital-lattice polarons in ferromagnetic LaMnO3 (2002)
Bała, J., Oleś, A. M., Sawatzky, G. A.
We investigate the combined influence of superexchange and electron-phonon interactions on the excitation spectra and on hole propagation in a ferromagnetic plane of LaMnO3. The Jahn- Teller effect...
Brink, J.G.J. Van Den, Sawatzky, G.A.
In situ XPS analysis of various iron oxide films grown by NO2-assisted molecular-beam epitaxy (1999)
Fujii, T., Groot, F.M.F. De, Sawatzky, G.A., Voogt, F.C., Hibma, T., Okada, K.
We report on a systematic analysis of x-ray photoelectron spectroscopy (XPS) core- and valence-level spectra of clean and well-characterized iron oxide films, i.e., a-Fe2O3, y-Fe2O3, Fe3- dO4, and...
Local spin-flip spectral distribution obtained by resonant x-ray Raman scattering (1998)
Groot, F.M.F. De, Kuiper, P., Sawatzky, G.A.
We show that resonant x-ray Raman (RXR) scattering can be used to study the local spin-flip excitation spectral distribution in magnetically ordered 3d transition-metal compounds. We demonstrate with...
Study of magnetism using circularly polarized soft X-rays (1998)
Brookes, N.B., Sinkovic, B., Tjeng, L.H., Goedkoop, J.B., Hesper, R., Pellegrin, E., ...
It hes recently been shown that spin-resolved valence band photoemission spectra can be obtained from macroscopically non-magnetic transition metal materials. This is achieved by combining circularly...
Sinkovic, B., Tjeng, L.H., Brookes, N.B., Goedkoop, J.B., Hesper, R., Pellegrin, E., ...
We report the measurement of the local Ni 3d spin polarization, not only below but also above the Curie temperature (TC), using the newly developed spin-resolved circularly polarized 2p (L3) resonant...
Phase transition in LiVO2 studied by near-edge x-ray-absorption spectroscopy (1997)
Pen, H.F., Tjeng, L.H., Pellegrin, E., Groot, F.M.F. De, Sawatzky, G.A., Veenendaal, M.A. Van, ...
We present temperature-dependent V-2p and O-1s x-ray-absorption spectra of LiVO2. The aim of this study is to monitor changes in electronic structure on going through the phase transition. The...
Tjeng, L.H., Sinkovic, B., Brookes, N.B., Goedkoop, J.B., Hesper, R., Pellegrin, E., ...
We demonstrate that it is possible to obtain spin-resolved valence band spectra with a very high degree of spin polarization from antiferromagnetic transition metal materials if the excitation light...
Pellegrin, E., Tjeng, L.H., Groot, F.M.F. De, Hesper, R., Sawatzky, G.A., Moritomo, Y., ...
Soft X-ray magnetic circular dichroism (SXMCD) measurements are reported on the O K- and Mn L-absorption edges of La1-x Srx MnO3 (x = 0.15, 0.18, and 0.4) single crystals in their ferromagnetic...
New phases in an extended Hubbard model explicitly including atomic polarizabilities (1996)
Brink, J., Van De, Meinders, M.B.J., Lorenzana, J., Eder, R., Sawatzky, G.A.
Fourier Transform Photoemission Spectroscopy (1996)
Meinders, M.B.J., Drabe, K.E., Jonkman, H.T., Sawatzky, G.A.
Brink, J., Van De, Meinders, M.B.J., Sawatzky, G.A.