Zobrazeno 1 - 10
of 304
pro vyhledávání: '"Woicik, J."'
Autor:
Ryan, P. J., Sterbinsky, G. E., Choi, Y., Woicik, J. C., Zhu, Leyi, Jiang, J. S., Lee, J-H., Schlom, D. G., Birol, T., Brown, S. D., Thompson, P. B. J., Normile, P. S., Lang, J., Kim, J. -W.
Publikováno v:
Phys. Rev. B 101, 180409 (2020)
We have elucidated the spin, lattice, charge and orbital coupling mechanism underlying the multiferroic character in tensile strained EuTiO3 films. Symmetry determined by oxygen octahedral tilting shapes the hybridization between the Eu 4f and Ti 3d
Externí odkaz:
http://arxiv.org/abs/2002.01996
Autor:
Du, Y., Sushko, P. V., Spurgeon, S. R., Bowden, M. E., Ablett, J. M., Lee, T. -L., Quackenbush, N. F., Woicik, J. C., Chambers, S. A.
Publikováno v:
Phys. Rev. Materials 2, 094602 (2018)
The electronic properties of epitaxial heterojunctions consisting of the prototypical perovskite oxide semiconductor,n-SrTiO3 and the high-mobility Group IV semiconductor p-Ge have been investigated. Hard x-ray photoelectron spectroscopy with a new m
Externí odkaz:
http://arxiv.org/abs/1808.04463
Autor:
Woicik, J. C., Ablett, J. M., Quackenbush, N. F., Rumaiz, A. K., Weiland, C., Droubay, T. C., Chambers, S. A.
Publikováno v:
Phys. Rev. B 97, 245142 (2018)
The absorption of a photon and the emission of an electron is not a simple, two-particle process. The complicated many-electron features observed during core photo-ionization can therefore reveal many of the hidden secrets about the ground and excite
Externí odkaz:
http://arxiv.org/abs/1805.05455
Autor:
Laverock, J., Kuyyalil, J., Chen, B., Singh, R. P., Balakrishnan, G., Karlin, B., Woicik, J. C, Smith, K. E.
Publikováno v:
Phys. Rev. B 91, 165123 (2015)
We report hard x-ray photoemission spectroscopy measurements of the electronic structure of the prototypical correlated oxide SrxCa1-xVO3. By comparing spectra recorded at different excitation energies, we show that 2.2 keV photoelectrons contain a s
Externí odkaz:
http://arxiv.org/abs/1504.05232
Autor:
Weiland, C., Sterbinsky, G. E., Rumaiz, A. K., Hellberg, C. S., Woicik, J. C., Zhu, S., Schlom, D. G.
Hard x-ray photoelectron spectroscopy (HAXPES) and variable kinetic energy x-ray photoelectron spectroscopy (VKE-XPS) analyses have been performed on 10 unit cell La$_{(1-{\delta})}$Al$_{(1+{\delta})}$O$_3$ films, with La:Al ratios of 1.1, 1.0, and 0
Externí odkaz:
http://arxiv.org/abs/1503.02969
We find a new 5 eV satellite in the Ti 1s photoelectron spectrum of the transition-metal oxide SrTiO$_3$. This satellite appears in addition to the well-studied 13 eV structure that is typically associated with the Ti 2p core line. We give direct exp
Externí odkaz:
http://arxiv.org/abs/1501.05601
Autor:
Rumaiz, Abdul K., Woicik, J. C., Cockayne, E., Lin, H. Y., Jaffari, G. Hassnain, Shah, S. Ismat
We have determined the electronic and atomic structure of N doped TiO2 using a combination of hard x-ray photoelectron spectroscopy (HAXPES) and first- principles density functional theory calculations. Our results reveal that N doping of TiO2 leads
Externí odkaz:
http://arxiv.org/abs/0911.3455
Autor:
Tyson, T. A., Wu, T., Woicik, J., Ravel, B., Ignatov, A., Zhang, C. L., Qin, Z., Zhou, T., Cheong, S. -W.
The local structure of the parent and doped LaFeAsO1-xFx (pnictide) compounds were studied by x-ray absorption spectroscopy. In the doped system, the Fe-As and Fe-Fe correlations are well modeled by an Einstein model with no low temperature anomalies
Externí odkaz:
http://arxiv.org/abs/0903.3992
We have used high-resolution Extended X-ray Absorption Fine-Structure and diffraction techniques to measure the local structure of strained La$_{0.5}$Sr$_{0.5}$CoO$_3$ films under compression and tension. The lattice mismatch strain in these compound
Externí odkaz:
http://arxiv.org/abs/0809.1178
The ferromagnetic properties of epitaxial La$_{0.5}$Sr$_{0.5}$CoO$_3$ thin films have been studied. The magnetic transition is affected by both strain and finite thickness. We have used a series of films of different thickness and on different substr
Externí odkaz:
http://arxiv.org/abs/0708.3964