Zobrazeno 1 - 10
of 1 142
pro vyhledávání: '"Chergui M"'
Autor:
Babcock, N. S., Montes-Cabrera, G., Oberhofer, K. E., Chergui, M., Celardo, G. L., Kurian, P.
Networks of tryptophan -- an aromatic amino acid with strong fluorescent response -- are ubiquitous in biological systems, forming diverse architectures in transmembrane proteins, cytoskeletal filaments, sub-neuronal elements, photoreceptor complexes
Externí odkaz:
http://arxiv.org/abs/2302.01469
Autor:
Mariette, C., Lorenc, M., Cailleau, H., Collet, E., Guérin, L., Volte, A., Trzop, E., Bertoni, R., Dong, X., Lépine, B., Hernandez, O, Janod, E., Cario, L., Phuoc, V. Ta, Ohkoshi, S., Tokoro, H., Patthey, L., Babic, A., Usov, I., Ozerov, D., Sala, L., Ebner, S., Böhler, P., Keller, A, Oggenfuss, A., Zmofing, T., Redford, S., Vetter, S., Follath, R., Juranic, P., Schreiber, A., Beaud, P., Esposito, V., Deng, Y, Ingold, G., Chergui, M., Mancini, G. F., Mankowsky, R., Svetina, C., Zerdane, S., Mozzanica, A., Wulff, M., Levantino, M., Lemke, H., Cammarata, M.
Thanks to the remarkable developments of ultrafast science, one of today's challenges is to modify material state by controlling with a light pulse the coherent motions that connect two different phases. Here we show how strain waves, launched by ele
Externí odkaz:
http://arxiv.org/abs/2002.08152
Publikováno v:
EPJ Web of Conferences, Vol 41, p 05046 (2013)
Transient electron density maps are derived from x-ray diffraction patterns of photoexcited [Fe(bpy)3]2+(PF6−)2 powder. Upon photoexcitation, the 5T2 quintet state reveals a charge transfer from the PF6− ions and from the Fe atoms to neighboring
Externí odkaz:
https://doaj.org/article/d85139ee1523456498d369c0903af5e9
Autor:
Gatti, G., Crepaldi, A., Puppin, M., Tancogne-Dejean, N., Xian, L., Roth, S., Polishchuk, S., Bugnon, Ph., Magrez, A., Berger, H., Frassetto, F., Poletto, L., Moreschini, L., Moser, S., Bostwick, A., Rotenberg, E., Rubio, A., Chergui, M., Grioni, M.
Publikováno v:
Phys. Rev. Lett. 125, 076401 (2020)
In nodal-line semimetals linearly dispersing states form Dirac loops in the reciprocal space, with high degree of electron-hole symmetry and almost-vanishing density of states near the Fermi level. The result is reduced electronic screening and enhan
Externí odkaz:
http://arxiv.org/abs/1912.09673
Autor:
Puppin, M., Polishchuk, S., Colonna, N., Crepaldi, A., Dirin, D. N., Nazarenko, O., De Gennaro, R., Gatti, G., Roth, S., Barillot, T., Poletto, L., Xian, R. P., Rettig, L., Wolf, M., Ernstorfer, R., Kovalenko, M. V., Marzari, N., Grioni, M., Chergui, M.
Publikováno v:
Phys. Rev. Lett. 124, 206402 (2020)
Lead-halide perovskite (LHP) semiconductors are emergent optoelectronic materials with outstanding transport properties which are not yet fully understood. We find signatures of large polaron formation in the electronic structure of the inorganic LHP
Externí odkaz:
http://arxiv.org/abs/1909.00248
Autor:
Rossi, T. C., Grolimund, D., Nachtegaal, M., Cannelli, O., Mancini, G. F., Bacellar, C., Kinschel, D., Rouxel, J. R., Ohannessian, N., Pergolesi, D., Lippert, T., Chergui, M.
Publikováno v:
Phys. Rev. B 100, 245207 (2019)
Anatase TiO2 (a-TiO2) exhibits a strong X-ray absorption linear dichroism with the X-ray incidence angle in the pre-edge, the XANES and the EXAFS at the titanium K-edge. In the pre-edge region the behaviour of the A1-A3 and B peaks, originating from
Externí odkaz:
http://arxiv.org/abs/1903.03301
Autor:
Vanacore, G. M., Hu, J., Baldini, E., Rozzi, C. A., Amato, M., Wei, H., Huang, J., Polishchuk, S., Puppin, M., Crepaldi, A., Grioni, M., Chergui, M., Carbone, F., Zewail, A. H.
In hybrid lead halide perovskites, the coupling between photogenerated charges and the ionic degrees of freedom plays a crucial role in defining the intrinsic limit of carrier mobility and lifetime. However, direct investigation of this fundamental i
Externí odkaz:
http://arxiv.org/abs/1801.03731
Autor:
Mansart, B., Cottet, M. J. G., Mancini, G. F., Jarlborg, T., Dugdale, S. B., Johnson, S. L., Mariager, S. O., Milne, C. J., Beaud, P., Grübel, S., Johnson, J. A., Kubacka, T., Ingold, G., Prsa, K., Rønnow, H. M., Conder, K., Pomjakushina, E., Chergui, M., Carbone, F.
Publikováno v:
Physical Review B 88, 054507 (2013)
The strength of the electron-phonon coupling parameter and its evolution throughout a solid's phase diagram often determines phenomena such as superconductivity, charge- and spin-density waves. Its experimental determination relies on the ability to
Externí odkaz:
http://arxiv.org/abs/1401.4072
Autor:
Mansart, B., Cottet, M. J. G., Penfold, T. J., Dugdale, S. B., Tediosi, R., Chergui, M., Carbone, F.
The effect of dimensionality on materials properties has become strikingly evident with the recent discovery of graphene. Charge ordering phenomena can be induced in one dimension by periodic distortions of a material's crystal structure, termed Peie
Externí odkaz:
http://arxiv.org/abs/1204.0883
Dynamical information on spin degrees of freedom of proteins or solids can be obtained by Nuclear Magnetic Resonance (NMR) and Electron Spin Resonance (ESR). A technique with similar versatility for charge degrees of freedom and their ultrafast corre
Externí odkaz:
http://arxiv.org/abs/1112.0737