Decoupling spin-orbital correlations in a layered manganite amidst ultrafast hybridized charge-transfer band excitation

Autor: Robert G. Moore, Stephanie Mack, Giacomo Coslovich, Y. Tokura, S. W. Huang, Yi-De Chuang, Jun Fujioka, Peter B. Littlewood, Michael Kozina, Joshua J. Turner, William F. Schlotter, S. Zohar, Jeremy A. Johnson, Matthias C. Hoffmann, L. Shen, Michael P. Minitti, C. Ford, Oleg Krupin, Wei-Sheng Lee, Zahid Hussain, Georgi L. Dakovski, S. Lieu

Publikováno v: Physical Review B. 101

In the mixed-valence manganites, a near-infrared laser typically melts the orbital and spin order simultaneously, corresponding to the photoinduced d1d0→d0d1 excitations in the Mott-Hubbard bands of manganese. Here, we use ultrafast methods-both fe

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::23f498e1e57a5b8b522361bd57a5d771
https://doi.org/10.1103/physrevb.101.201103

Effect(s) of Cobalt Substitution in $L1_{0}$-(Fe,Co)Pt Thin Films

Autor: Kumar Srinivasan, Shoya Sakamoto, Rui Zhang, Atsushi Fujimori, Zhendong Chi, Keisuke Ikeda, Yosuke Nonaka, Antony Ajan, Goro Shibata, Kenta Amemiya, Oleg Krupin, Masako Sakamaki

We have studied the effect of cobalt substitution in $L{1}_{0}\ensuremath{-}{\mathrm{Fe}}_{1\ensuremath{-}x}{\mathrm{Co}}_{x}\mathrm{Pt}$ films by means of x-ray magnetic circular dichroism (XMCD) and first-principles calculations. The magnetic momen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bc6999a5d6fcd77753c80068e827e7e2

Phase fluctuations and the absence of topological defects in a photo-excited charge-ordered nickelate

Autor: A. P. Sorini, Yulin Chen, M. C. Langner, Brian Moritz, William F. Schlotter, Takao Sasagawa, Robert W. Schoenlein, Joseph Robinson, Robert G. Moore, Y. F. Kung, D. H. Lu, Steven L. Johnson, Oleg Krupin, Wei-Sheng Lee, Michael Först, L. Patthey, Robert A. Kaindl, Zhi-Xun Shen, Joshua J. Turner, David A. Reis, Giacomo Coslovich, Alexander F. Kemper, Patrick S. Kirchmann, B. Huber, Zahid Hussain, Nils Huse, Yi-De Chuang, D.-H. Lee, Mariano Trigo, Yiwen Zhu, Dionisio Doering, Thomas P. Devereaux, Shuyun Zhou, Ming Yi, Peter Denes

Publikováno v: Nature Communications 3, 838-(2012). doi:10.1038/ncomms1837
Nature Communications

The dynamics of an order parameter's amplitude and phase determines the collective behaviour of novel states emerged in complex materials. Time- and momentum-resolved pump-probe spectroscopy, by virtue of its ability to measure material properties at

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::78245e4ac15da1d4bf35d32ee9b125fc
https://doi.org/10.1038/ncomms1837

Ultrafast dynamics of localized magnetic moments in the unconventional Mott insulator Sr2IrO4

Autor: Ramamoorthy Ramesh, S. K. Mishra, Claudy Serrao, Yi-De Chuang, Serguei L. Molodtsov, M. Chollet, David Fritz, William F. Schlotter, Georgi L. Dakovski, Diling Zhu, Bumjoon Kim, Joshua J. Turner, Jong-Woo Kim, Michael P. Minitti, Jungho Kim, Oleg Krupin, Wei-Sheng Lee

Publikováno v: Journal of physics. Condensed matter : an Institute of Physics journal. 28(32)

We report a time-resolved study of the ultrafast dynamics of the magnetic moments formed by the [Formula: see text] states in Sr2IrO4 by directly probing the localized iridium 5d magnetic state through resonant x-ray diffraction. Using optical pump-h

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6b783363284c391edf6efbece74e861d
https://pubmed.ncbi.nlm.nih.gov/27310659

Atomic-Scale Perspective of Ultrafast Charge Transfer at a Dye-Semiconductor Interface

Autor: Felix Sturm, Fabian Weise, Robert W. Schoenlein, Stefan Neppl, Nils Huse, William F. Schlotter, Hirohito Ogasawara, Joseph Robinson, Giacomo Coslovich, Chaitanya Das Pemmaraju, Daniel Slaughter, Joshua J. Turner, Stephen R. Leone, Josh Vura-Weis, Daniel M. Neumark, Hendrik Bluhm, David Prendergast, Ming-Fu Lin, Michael P. Minitti, Michael Holmes, Marc Messerschmidt, Ali Belkacem, Hana Cho, Robert A. Kaindl, Oleg Krupin, Katrin R. Siefermann, Champak Khurmi, Jin Z. Zhang, Jinghua Guo, Sheraz Gul, Andrey Shavorskiy, Amy A. Cordones, Camila Bacellar, Matthew L. Strader, Dennis Nordlund, Oliver Gessner

Publikováno v: The journal of physical chemistry letters, vol 5, iss 15
The Journal of Physical Chemistry Letters
Siefermann, KR; Pemmaraju, CD; Neppl, S; Shavorskiy, A; Cordones, AA; Vura-Weis, J; et al.(2014). Atomic-scale perspective of ultrafast charge transfer at a dye-semiconductor interface. Journal of Physical Chemistry Letters, 5(15), 2753-2759. doi: 10.1021/jz501264x. UC Berkeley: Retrieved from: http://www.escholarship.org/uc/item/0r4527hk
The journal of physical chemistry letters 5(15), 2753-2759 (2014). doi:10.1021/jz501264x

Understanding interfacial charge-transfer processes on the atomic level is crucial to support the rational design of energy-challenge relevant systems such as solar cells, batteries, and photocatalysts. A femtosecond time-resolved core-level photoele

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d700328bfb83e921894fe68d8bf08567
https://pubmed.ncbi.nlm.nih.gov/26277975