Mulders, AM, Lawrence, SM, Princep, AJ, Staub, U, Bodenthin, Y, Garcia-Fernandez, M, ...
Magnetic spiral structures can exhibit ferroelectric moments as recently demonstrated in various multiferroic materials. In such case the helicity of the magnetic spiral is directly correlated with...
Direct observation of charge order and orbital glass state in multiferroic LuFe2O4 (2008)
Mulders, A. M., Lawrence, S. M., Staub, U., Garcia-Fernandez, M., Scagnoli, V., Mazzoli, C., ...
Geometrical frustration of the Fe ions in LuFe2O4 leads to intricate charge and magnetic order and a strong magnetoelectric coupling. Using resonant x-ray diffraction at the Fe K edge, the anomalous...
Magnetic and electronic Co states in layered cobaltate GdBaCo2O5.5-x (2008)
Garcia-Fernandez, M., Scagnoli, V., Staub, U., Mulders, A. M., Janousch, M., Bodenthin, Y., ...
We have performed non-resonant x-ray diffraction, resonant soft and hard x-ray magnetic diffraction, soft x-ray absorption and x-ray magnetic circular dichroism measurements to clarify the electronic...
Garcia-Fernandez, M., Staub, U., Bodenthin, Y., Lawrence, S. M., Mulders, A. M., Buckley, C. E., ...
Soft X-ray resonant powder diffraction has been performed at the Mn L2,3 edges of A-site ordered SmBaMn2O6. The energy and polarization dependence of the (1/2 1/2 0) reflection provide direct...
Magnetic and electronic Co states in the layered cobaltate GdBaCo2O5.5−x (2008)
García-Fernández, M., Scagnoli, V., Staub, U., Mulders, A.M., Janousch, M., Bodenthin, Y., ...
We have performed nonresonant x-ray diffraction, resonant soft and hard x-ray magnetic diffraction, soft x-ray absorption, and x-ray magnetic circular dichroism measurements to clarify the electronic...
Direct observation of oxygen superstructures in manganites (2007)
Grenier, S., Thomas, K. J., Hill, J. P., Staub, U., Bodenthin, Y., García-Fernández, M., ...
We report the observation of superstructures associated with the oxygen 2p-states in two prototypical manganites using x-ray diffraction at the oxygen K-edge. We determine the nature of the orderings...
Role of oxygen vacancies in Cr-doped SrTiO3 for resistance-change memory (2007)
Janousch, M., Meijer, G. I., Staub, U., Delley, B., Karg, S. F., Andreasson, B. P.
Transition-metal oxides exhibiting a bistable resistance state are attractive for non-volatile memory applications. The relevance of oxygen vacancies (VO) for the resistance-change memory was...
Resistive Switching in Cr doped SrTiO3: An X-ray Absorption Spectroscopy study (2007)
Andreasson, B. P., Janousch, M., Staub, U., Meijer, G. I., Delley, B.
X-ray absorption spectroscopy was used to study the microscopic origin of conductance and resistive switching in chromium doped strontium titanate (Cr:SrTiO3). Differences in the x-ray absorption...
Manipulating the magnetic structure by electric fields in multiferroic ErMn2O5 (2007)
Bodenthin, Y., Staub, U., Garcia-Fernandez, M., Janoschek, M., Schlappa, J., Golovenchits, E. I., ...
Based on measurements of soft x-ray magnetic diffraction under in-situ applied electric field, wereport on significantly manipulation and exciting of commensurate magnetic order in multiferroic...
Direct probe of oxygen superstructures in manganites (2007)
Grenier, Stéphane, J. Thomas, K., Hill, J.P., Staub, U., Bodenthin, Y., Garcia-Fernandez, M., ...
We report the observation of superstructures associated with the oxygen 2p-states in two prototypical manganites using x-ray diffraction at the oxygen K-edge. We determine the nature of the orderings...
Grenier, Stéphane, Kiryukhin, V., G. Kim, B., P. Hill, J., J. Thomas, K., ...
We report on the experimental characterization of orbital ordering and the associated lattice distortions in highly doped Bi1-xCaxMnO3. Resonant x-ray diffraction was used at the Mn L-edge for the...
Direct observation of oxygen superstructures in manganites (2007)
Grenier, Stéphane, J. Thomas, K., Hill, J.P., Staub, U., Bodenthin, Y., Garcia-Fernandez, M., ...
We report the observation of superstructures associated with the oxygen 2p-states in two prototypical manganites using x-ray diffraction at the oxygen K-edge. In the stripe order system Bi0.31 Ca0.69...
Direct observation of oxygen superstructures in manganites (2007)
Grenier, Stéphane, J. Thomas, K., Hill, J.P., Staub, U., Bodenthin, Y., Garcia-Fernandez, M., ...
We report the observation of superstructures associated with the oxygen 2p-states in two prototypical manganites using x-ray diffraction at the oxygen K-edge. In the stripe order system Bi0.31 Ca0.69...
Grenier, Stéphane, Kiryukhin, V., G. Kim, B., P. Hill, J., J. Thomas, K., ...
We report on the experimental characterization of orbital ordering and the associated lattice distortions in highly doped Bi1-xCaxMnO3. Resonant x-ray diffraction was used at the Mn L-edge for the...
Role of magnetic and orbital ordering at the metal-insulator transition in NdNiO3 (2006)
Scagnoli, V., Staub, U., Mulders, A. M., Janousch, M., Meijer, G. I., Hammerl, G., ...
Soft x-ray resonant scattering at the Ni L2,3 edges is used to test models of magnetic and orbital-ordering below the metal-insulator transition in NdNiO3. The large branching ratio of the L3 to L2...
Staub, U., Scagnoli, V., Mulders, A. M., Janousch, M., Honda, Z., Tonnerre, J. M.
Temperature dependences of a magnetic and an orbital Bragg reflection at the Mn L2 and L3 edges of La0.5Sr1.5MnO4 have been collected. The temperature evolution of the orbital reflection depend...
High-order Dy multipole motifs observed in DyB2C2 with resonant soft x-ray Bragg diffraction (2006)
Mulders, A. M., Staub, U., Scagnoli, V., Lovesey, S. W., Balcar, E., Nakamura, T., ...
Resonant soft x-ray Bragg diffraction at the Dy M4,5 edges has been exploited to study Dy multipole motifs in DyB2C2. Our results are explained introducing the intra-atomic quadrupolar interaction...
Manipulating 4f quadrupolar pair interactions in TbB2C2 using a magnetic field (2006)
Mulders, A. M., Staub, U., Scagnoli, V., Tanaka, Y., Kikkawa, A., Katsumata, K., ...
Resonant soft x-ray Bragg diffraction at the Tb M4,5 edges and non resonant Bragg diffraction have been used to investigate orbitals in TbB2C2. The Tb 4f quadrupole moments are ordered in zero field...
Orbital dynamics of the 4f shell in DyB2C2 (2005)
Staub, U, Mulders, AM, Zaharko, O, Janssen, S, Nakamura, T, Lovesey, SW
EPR study of some rare-earth ions (Dy3+, Tb3+ and Nd3+) in YBa2Cu3O6 compound (2004)
Gafurov, M. R., Ivanshin, V. A., Kurkin, I. N., Rodionova, M. P., Keller, H., Gutmann, M., ...
We investigate the low temperature X-band electron paramagnetic resonance (EPR) of YBa2Cu3O6 compounds with x = 6.0 doped with Dy3+, Tb3+, and Nd3+. The EPR spectra of Dy3+ and Tb3+ have been...
Direct and quantitative determination of the orbital ordering in CeB6 by x-ray diffraction (2004)
Tanaka, Y, Staub, U, Katsumata, K, Lovesey, S W, Lorenzo, J E, Narumi, Y, ...
EPR study of some rare-earth ions (Dy3+, Tb3+, and Nd3+) in YBa2CU3O6-compound (2003)
Gafurov,M. R., Ivanshin,V. A., Kurkin,I. N., Rodionova,M. P., Keller,H., Gutmann,M., ...
Lovesey, S W, Balcar, E, Detlefs, C, Sivia, D S, Staub, U
The phase transition in NpO2 at To (approximately = to) 25.5K is accompanied by the onset of superlattice reflections in the x-ray Bragg diffraction pattern, with intensity enhanced by an...
EPR study of some rare-earth ions (Dy3+, Tb3+, and Nd3+) in YBa2CU3O6-compound (2003)
Gafurov, M. R., Ivanshin, V. A., Kurkin, I. N., Rodionova, M. P., Keller, H., Gutmann, M., ...
f-Electron excitations in the neutron spectra of mixed-valence Sm1-xYxS (2002)
Alekseev, P A, Mignot, J-M, Staub, U, Ochiai, A, Golubkov, A V, Braden, M, ...
f-Electron excitation in the neutron spectra of mixed-valence Sm§1§-§xY§xS. (2002)
Alekseev, P.A., Mignot, J.M., Staub, U., Ochiai, A., Golubkov, A.V., Braden, M., ...
Proc.of the Internat.Conf.on Strongly Correlated Electron Systems (SCES 2001), Ann Arbor, Mich., August 6-10, 2001
Formation of a Magnetic Soliton Lattice in Copper Metaborate (2001)
Bezmaternikh, L., Boehm, M., Ouladdiaf, B., Petrakovskii, G. A., Roessli, B., Schefer, J., ...
Magnetic Phase Transitions in the double spin-chains compound $\rm LiCu_2O_2$ (2000)
Roessli, B., Staub, U., Amato, A., Herlach, D., Pattison, P., Sablina, K., ...
We report high-resolution x-ray diffraction, muon-spin-rotation spectroscopic and specific heat measurements in the double spin-chains compound $\rm LiCu_2O_2$. The x-ray diffraction results show...
Formation of a magnetic soliton lattice in copper metaborate (2000)
Roessli, B., Schefer, J., Petrakovskii, G., Ouladdiaf, B., Boehm, M., Staub, U., ...
The magnetic ground-state of copper metaborate is investigated by means of elastic neutron scattering.The magnetic structure of CuB2O4 is incommensurate with respect to the chemical lattice at T=1.8K...
The 4f eletrons attached to a lanthanide ion substituting Y in YBa(2)Cu(3)O(7-delta) are described with a crystal-field potential (symmetry D(2h)) and a magneto-elastic interaction, linear in the...
Rosenkranz, S, Medarde, M, Fauth, F, Mesot, J, Zolliker, M, Furrer, A, ...
Staub, U., Soderholm, L., Skanthakumar, S., Antonio, M.
X-ray absorption and magnetization experiments are used to describe the oxidation states of the rare earth ions R=Ce, Pr and Tb in the double layer high-Tc superconducting series RBa2Cu3O7 and...
Quasi two-dimensional magnetic order of Tb3+ spins in Pb2Sr2Tb0.5Ca0.5Cu3O8 (x=0 and 0.5) (1997)
Staub, U, Soderholm, L, Skanthakumar, S, Rosenkranz, S, Ritter, C, Kagunya, W
Staub, U., Soderholm, L., Skanthakumar, S., Antonio, M.
X-ray absorption and magnetization experiments are used to describe the oxidation states of the rare earth ions R=Ce, Pr and Tb in the double layer high-Tc superconducting series RBa2Cu3O7 and...
Staub, U., Soderholm, L., Skanthakumar, S., Antonio, M.
X-ray absorption and magnetization experiments are used to describe the oxidation states of the rare earth ions R=Ce, Pr and Tb in the double layer high-Tc superconducting series RBa2Cu3O7 and...
Tb spin correlations in Pb2Sr2Tb0.5Ca0.5Cu3O8 (1996)
Staub, U, Soderholm, L, Skanthakumar, S, Rosenkranz, S, Ritter, C, Kagunya, W
Magnetic Properties of Nd3+ in Nd-Ba-Cu-O-compounds (1994)
Allenspach, P, Mesot, J, Staub, U, Guillaume, M, Furrer, A, Yoo, S-I, ...
Neutron spectroscopic studies of the crystal field in HoBa2Cu3Ox (6 (1994)
Staub, U, Mesot, J, Guillaume, M, Allenspach, P, Furrer, A, Mutka, H, ...
Ho3+ dimer excitations in Ho0.1Y0.9Ba2Cu3Ox (6.6 (1994)
Guillaume, M, Staub, U, Fauth, F, Mesot, J, Furrer, A, Carlile, C J
Neutron spectroscopic studies of the crystal field in ErBa2Cu2Ox (6 < x < 7) (1993)
Mesot, J, Allenspach, P, Staub, U, Furrer, A, Mutka, H, Osborn, R, ...
Neutron spectroscopy of the crystalline electric field in high-Tc YbBa2Cu3O7 (1992)
Guillaume, M, Allenspach, P, Mesot, J, Staub, U, Furrer, A, Osborn, R, ...
Neutron spectroscopy of Nd1-v+yCavBa2-yCu3+zOx (1992)
Allenspach, P, Mesot, J, Staub, U, Furrer, A, Blank, H, Mutka, H, ...