Zobrazeno 1 - 10
of 1 092
pro vyhledávání: '"KAINDL, G"'
Autor:
Schlappa, J., Schüßler-Langeheine, C., Chang, C. F., Hu, Z., Schierle, E., Ott, H., Weschke, E., Kaindl, G., Huijben, M., Rijnders, G., Blank, D. H. A., Tjeng, L. H.
We studied the resonant diffraction signal from stepped surfaces of SrTiO3 at the Ti 2p -> 3d (L2,3) resonance in comparison with x-ray absorption (XAS) and specular reflectivity data. The steps on the surface form an artificial superstructure suited
Externí odkaz:
http://arxiv.org/abs/0804.2461
Publikováno v:
Phys. Rev. Lett. 100, 227203 (2008)
For epitaxial trilayers of the magnetic rare-earth metals Gd and Tb, exchange coupled through a non-magnetic Y spacer layer, element-specific hysteresis loops were recorded by the x-ray magneto-optical Kerr effect at the rare-earth $M_5$ thresholds.
Externí odkaz:
http://arxiv.org/abs/0712.3122
The effects of isolated residual-gas adsorbates on the local electronic structure of the Dy(0001) surface were spatially mapped by scanning tunneling microscopy and spectroscopy at 12 K. Less than 15 A away from an adsorbate, a strong reduction of th
Externí odkaz:
http://arxiv.org/abs/0708.2306
Autor:
Schlappa, J., Schuessler-Langeheine, C., Chang, C. F., Ott, H., Tanaka, A., Hu, Z., Haverkort, M. W., Schierle, E., Weschke, E., Kaindl, G., Tjeng, L. H.
Publikováno v:
Phys. Rev. Lett. 100, 026406 (2008)
Using soft-x-ray diffraction at the site-specific resonances in the Fe L23 edge, we find clear evidence for orbital and charge ordering in magnetite below the Verwey transition. The spectra show directly that the (001/2) diffraction peak (in cubic no
Externí odkaz:
http://arxiv.org/abs/cond-mat/0605096
Autor:
Wegner, D., Bauer, A., Koroteev, Yu. M., Bihlmayer, G., Chulkov, E. V., Echenique, P. M., Kaindl, G.
Publikováno v:
Phys. Rev. B 73, 115403 (2006)
Most spectroscopic methods for studying the electronic structure of metal surfaces have the disadvantage that either only occupied or only unoccupied states can be probed, and the signal is cut at the Fermi edge. This leads to significant uncertainti
Externí odkaz:
http://arxiv.org/abs/cond-mat/0511425
Autor:
Ott, H., Schuessler-Langeheine, C., Schierle, E., Grigoriev, A. Yu., Leiner, V., Zabel, H., Kaindl, G., Weschke, E.
Quantitative analyses of x-ray scattering from thin films of Ho and Dy metal at the M_5 resonances result in values of the optical constants and the magnetic scattering lengths f_m, with f_m as large as 200 r_0. The observation of first- and second-o
Externí odkaz:
http://arxiv.org/abs/cond-mat/0509725
Publikováno v:
Phys. Rev. B 72, 092409 (2005)
The epitaxial system Sm/Co(0001) was studied for Sm coverages up to 1 monolayer (ML) on top of ultrathin Co/W(110) epitaxial films. Two ordered phases were found for 1/3 and 1 ML Sm, respectively. The valence state of Sm was determined by means of ph
Externí odkaz:
http://arxiv.org/abs/cond-mat/0506181
Low-temperature scanning tunneling spectroscopy is used to study electronic structure and dynamics of d-like surface states of trivalent lanthanide metals from La to Lu. The magnetic exchange splitting of these states is found to scale with the 4f sp
Externí odkaz:
http://arxiv.org/abs/cond-mat/0502581
Autor:
Schuessler-Langeheine, C., Schlappa, J., Tanaka, A., Hu, Z., Chang, C. F., Schierle, E., Benomar, M., Ott, H., Weschke, E., Kaindl, G., Friedt, O., Sawatzky, G. A., Lin, H. -J., Chen, C. T., Braden, M., Tjeng, L. H.
Strong resonant enhancements of the charge-order and spin-order superstructure-diffraction intensities in La1.8Sr0.2NiO4 are observed when x-ray energies in the vicinity of the Ni L2,3 absorption edges are used. The pronounced photon-energy and polar
Externí odkaz:
http://arxiv.org/abs/cond-mat/0502357
Publikováno v:
Phys. Rev. Lett. 94, 126804 (2005)
Quantum-well states above the Fermi energy in thin Yb(111)-metal films deposited on a W(110) single crystal were studied by low-temperature scanning tunneling spectroscopy. These states are laterally highly localized and give rise to sharp peaks in t
Externí odkaz:
http://arxiv.org/abs/cond-mat/0411580