Zobrazeno 1 - 10
of 934
pro vyhledávání: '"Grioni M"'
Autor:
Gatti, G., Tancogne-Dejean, N., Hübener, H., De Giovannini, U., Dai, J., Polishchuk, S., Bugnon, Ph., Frassetto, F., Poletto, L., Chergui, M., Grioni, M., Rubio, A., Puppin, M., Crepaldi, A.
Chirality in tellurium derives from a Peierls distortion driven by strong electron-phonon coupling, making this material a unique candidate for observing a light-induced topological phase transition. By using time- and angle-resolved photoelectron sp
Externí odkaz:
http://arxiv.org/abs/2411.13954
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:
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:
Crepaldi, A., Autès, G., Gatti, G., Roth, S., Sterzi, A., Manzoni, G., Zacchigna, M., Cacho, C., Chapman, R. T., Springate, E., Seddon, E. A., Bugnon, Ph., Magrez, A., Berger, H., Vobornik, I., Kalläne, M., Quer, A., Rossnagel, K., Parmigiani, F., Yazyev, O. V., Grioni, M.
Publikováno v:
Phys. Rev. B 96, 241408 (2017)
$\mathrm{MoTe_2}$ has recently been shown to realize in its low-temperature phase the type-II Weyl semimetal (WSM). We investigated by time- and angle- resolved photoelectron spectroscopy (tr-ARPES) the possible influence of the Weyl points in the el
Externí odkaz:
http://arxiv.org/abs/1709.09854
Autor:
Fatale, S., Fatuzzo, C. G., Babkevich, P., Shaik, N. E., Pelliciari, J., Lu, X., McNally, D. E., Schmitt, T., Kikkawa, A., Taguchi, Y., Tokura, Y., Normand, B., Rønnow, H. M., Grioni, M.
Publikováno v:
Phys. Rev. B 96, 115149 (2017)
We use resonant inelastic x-ray scattering (RIXS) at the Cu L$_3$ edge to measure the charge and spin excitations in the "half-stuffed" Cu--O planes of the cuprate antiferromagnet Ba$_2$Cu$_3$O$_4$Cl$_2$. The RIXS line shape reveals distinct contribu
Externí odkaz:
http://arxiv.org/abs/1709.03427
Autor:
Valbuena, M. A., Chudzinski, P., Pons, S., Conejeros, S., Alemany, P., Canadell, E., Berger, H., Frantzeskakis, E., Avila, J., Asensio, M. C., Giamarchi, T., Grioni, M.
Materials where the electron filling is close to commensurate filling provide one of the great challenges in materials science. Several proposals of unconventional orderings, where the electronic liquid self-organizes into components with distinct pr
Externí odkaz:
http://arxiv.org/abs/1612.04712
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Autor:
Sutter, D., Fatuzzo, C. G., Moser, S., Kim, M., Fittipaldi, R., Vecchione, A., Granata, V., Sassa, Y., Cossalter, F., Gatti, G., Grioni, M., Ronnow, H. M., Plumb, N. C., Matt, C. E., Shi, M., Hoesch, M., Kim, T. K., Chang, T. R., Jeng, H. T., Jozwiak, C., Bostwick, A., Rotenberg, E., Georges, A., Neupert, T., Chang, J.
Publikováno v:
Nature Communications 8, 15176 (2017)
A paradigmatic case of multi-band Mott physics including spin-orbit and Hund's coupling is realised in Ca$_2$RuO$_4$. Progress in understanding the nature of this Mott insulating phase has been impeded by the lack of knowledge about the low-energy el
Externí odkaz:
http://arxiv.org/abs/1610.02854
Autor:
Manzoni, G., Sterzi, A., Crepaldi, A., Diego, M., Cilento, F., Zacchigna, M., Bugnon, Ph., Berger, H., Magrez, A., Grioni, M., Parmigiani, F.
Publikováno v:
Physical Review Letters 115, 207402 (2015)
We report on the temperature dependence of the $ZrTe_5$ electronic properties, studied at equilibrium and out of equilibrium, by means of time and angle resolved photoelectron spectroscopy. Our results unveil the dependence of the electronic band str
Externí odkaz:
http://arxiv.org/abs/1601.03627