Zobrazeno 1 - 10
of 132
pro vyhledávání: '"Ghiringhelli, Giacomo"'
Autor:
Rosa, Francesco, Martinelli, Leonardo, Krieger, Guillaume, Braicovich, Lucio, Brookes, Nicholas B., Merzoni, Giacomo, Sala, Marco Moretti, Yakhou-Harris, Flora, Arpaia, Riccardo, Preziosi, Daniele, Salluzzo, Marco, Fidrysiak, Maciej, Ghiringhelli, Giacomo
We use Resonant Inelastic X-ray Scattering (RIXS) to compare the doping dependence of magnetic excitations of an Infinite-Layer nickelate to those of a prototypical superconducting cuprate. The polarization analysis of RIXS spectra establishes the do
Externí odkaz:
http://arxiv.org/abs/2406.09271
Autor:
Schlappa, Justine, Ghiringhelli, Giacomo, Van Kuiken, Benjamin E., Teichmann, Martin, Miedema, Piter S., Delitz, Jan Torben, Gerasimova, Natalia, Molodtsov, Serguei, Adriano, Luigi, Baranasic, Bernard, Broers, Carsten, Carley, Robert, Gessler, Patrick, Ghodrati, Nahid, Hickin, David, Hoang, Le Phuong, Izquierdo, Manuel, Mercadier, Laurent, Mercurio, Giuseppe, Parchenko, Sergii, Stupar, Marijan, Yin, Zhong, Martinelli, Leonardo, Merzoni, Giacomo, Peng, Ying Ying, Reuss, Torben, Lalithambika, Sreeju Sreekantan Nair, Techert, Simone, Laarmann, Tim, Huotari, Simo, Schroeter, Christian, Langer, Burkhard, Giessel, Tatjana, Buechner, Robby, Buchheim, Jana, da Cruz, Vinicius Vaz, Eckert, Sebastian, Gwalt, Grzegorz, Liu, Chun-Yu, Siewert, Frank, Sohrt, Christian, Weniger, Christian, Pietzsch, Annette, Neppl, Stefan, Senf, Friedmar, Scherz, Andreas, Föhlisch, Alexander
Resonant Inelastic X-ray Scattering (RIXS) is an ideal X-ray spectroscopy method to push the combination of energy and time resolutions to the Fourier transform ultimate limit, because it is unaffected by the core-hole lifetime energy broadening. And
Externí odkaz:
http://arxiv.org/abs/2403.08461
Autor:
Merzoni, Giacomo, Martinelli, Leonardo, Braicovich, Lucio, Brookes, Nicholas B., Lombardi, Floriana, Rosa, Francesco, Arpaia, Riccardo, Sala, Marco Moretti, Ghiringhelli, Giacomo
In strongly correlated systems the complete determination of the dynamical susceptibility $\chi(\textbf{q}, \omega)$ is of special relevance because of the entwinement of the spin and charge components. Although Resonant Inelastic X-Ray Scattering (R
Externí odkaz:
http://arxiv.org/abs/2307.06375
Autor:
Martinelli, Leonardo, Wohlfeld, Krzysztof, Pelliciari, Jonathan, Arpaia, Riccardo, Brookes, Nicholas B., Di Castro, Daniele, Fernandez, Mirian G., Kang, Mingu, Krockenberger, Yoshiharu, Kummer, Kurt, McNally, Daniel E., Paris, Eugenio, Schmitt, Thorsten, Yamamoto, Hideki, Walters, Andrew, Zhou, Ke-Jin, Braicovich, Lucio, Comin, Riccardo, Sala, Marco Moretti, Devereaux, Thomas P., Daghofer, Maria, Ghiringhelli, Giacomo
Publikováno v:
Phys. Rev. Lett. 132, 066004 (2024)
We have investigated the 3d orbital excitations in CaCuO2 (CCO), Nd2CuO4 (NCO), and La2CuO4 (LCO) using high-resolution resonant inelastic x-ray scattering. In LCO they behave as well-localized excitations, similarly to several other cuprates. On the
Externí odkaz:
http://arxiv.org/abs/2304.02115
Autor:
Cai, Xinqiang, Kim, Jungho, Martinelli, Leonardo, Florio, Piero, Corti, Matteo, Qiao, Weiliang, Sun, Yanqiu, Niu, Jiasen, Faure, Quentin, Sahle, Christoph, Qiu, Qingzheng, Xiao, Qian, Zheng, Xiquan, Li, Qizhi, Zou, Changwei, Jiang, Xinyi, Ghiringhelli, Giacomo, Han, Wei, Xie, Yanwu, Lu, Yi, Sala, Marco Moretti, Peng, Yingying
Publikováno v:
Phys. Rev. B 108, 235167 (2023)
Recently, an exciting discovery of orientation-dependent superconductivity was made in two-dimensional electron gas (2DEG) at the interfaces of LaAlO$_3$/KTaO$_3$ (LAO/KTO) or EuO/KTaO$_3$ (EuO/KTO). The superconducting transition temperature can rea
Externí odkaz:
http://arxiv.org/abs/2303.01811
Autor:
Lu, Haiyu, Hashimoto, Makoto, Chen, Su-Di, Ishida, Shigeyuki, Song, Dongjoon, Eisaki, Hiroshi, Nag, Abhishek, Garcia-Fernandez, Mirian, Arpaia, Riccardo, Ghiringhelli, Giacomo, Braicovich, Lucio, Zaanen, Jan, Moritz, Brian, Kummer, Kurt, Brookes, Nicholas B., Zhou, Ke-Jin, Shen, Zhi-Xun, Devereaux, Thomas P., Lee, Wei-Sheng
Publikováno v:
Physical Review B 106, 155109 (2022)
Identifying quantum critical points (QCPs) and their associated fluctuations may hold the key to unraveling the unusual electronic phenomena observed in cuprate superconductors. Recently, signatures of quantum fluctuations associated with charge orde
Externí odkaz:
http://arxiv.org/abs/2210.10201
Autor:
Peng, Yingying, Martinelli, Leonardo, Li, Qizhi, Rossi, Matteo, Mitrano, Matteo, Arpaia, Riccardo, Sala, Marco Moretti, Gao, Qiang, Guo, Xuefei, De Luca, Gabriella Maria, Walters, Andrew, Nag, Abhishek, Barbour, Andi, Gu, Genda, Pelliciari, Jonathan, Brookes, Nicholas B., Abbamonte, Peter, Salluzzo, Marco, Zhou, Xingjiang, Zhou, Ke-Jin, Bisogni, Valentina, Braicovich, Lucio, Johnston, Steven, Ghiringhelli, Giacomo
Publikováno v:
Phys. Rev. B 105, 115105 (2022)
While electron-phonon coupling (EPC) is crucial for Cooper pairing in conventional superconductors, its role in high-$T_c$ superconducting cuprates is debated. Using resonant inelastic x-ray scattering at the oxygen $K$-edge, we studied the EPC in Bi
Externí odkaz:
http://arxiv.org/abs/2111.05533
Autor:
Martinelli, Leonardo, Betto, Davide, Kummer, Kurt, Arpaia, Riccardo, Braicovich, Lucio, Di Castro, Daniele, Brookes, Nicholas B., Sala, Marco Moretti, Ghiringhelli, Giacomo
We use resonant inelastic x-ray scattering (RIXS) to investigate the magnetic dynamics of the infinite-layer cuprate CaCuO2. We find that close to the (1/2,0) point the single magnon decays into a broad continuum of excitations accounting for 80% of
Externí odkaz:
http://arxiv.org/abs/2110.06666
Publikováno v:
J. Phys. Soc. Jpn. 90, 111005 (2021)
The presence of different electronic orders other than superconductivity populating the phase diagram of cuprates suggests that they might be the key to disclose the mysteries of this class of materials. In particular charge order in the form of char
Externí odkaz:
http://arxiv.org/abs/2106.00731
Autor:
Bachar, Nimrod, Koteras, Kacper, Gawraczynski, Jakub, Trzcinski, Waldemar, Paszula, Józef, Piombo, Riccardo, Barone, Paolo, Mazej, Zoran, Ghiringhelli, Giacomo, Nag, Abhishek, Zhou, Ke-Jin, Lorenzana, José, van der Marel, Dirk, Grochala, Wojciech
Charge transfer (CT) insulators are the parent phase of a large group of today's unconventional high-temperature superconductors. Here we study experimentally and theoretically the interband excitations of the CT insulator silver fluoride AgF$_2$, wh
Externí odkaz:
http://arxiv.org/abs/2105.08862