Zobrazeno 1 - 10
of 914
pro vyhledávání: '"Garcia Fernandez, M."'
Impact of electron correlations on two-particle charge response in electron- and hole-doped cuprates
Autor:
Nag, Abhishek, Zinni, Luciano, Choi, Jaewon, Li, J., Tu, Sijia, Walters, A. C., Agrestini, S., Hayden, S. M., Bejas, Matías, Lin, Zefeng, Yamase, H., Jin, Kui, García-Fernández, M., Fink, J., Greco, Andrés, Zhou, Ke-Jin
Publikováno v:
Phys. Rev. Research 6, 043184 (2024)
Estimating many-body effects that deviate from an independent particle approach, has long been a key research interest in condensed matter physics. Layered cuprates are prototypical systems, where electron-electron interactions are found to strongly
Externí odkaz:
http://arxiv.org/abs/2407.15692
Autor:
Martinelli, L., Biało, I., Hong, X., Oppliger, J., Lin, C., Schaller, T., Küspert, J., Fischer, M. H., Kurosawa, T., Momono, N., Oda, M., Choi, J., Agrestini, S., Garcia-Fernandez, M., Zhou, Ke-Jin, Wang, Q., Chang, J.
The relation between charge order, its quantum fluctuations and optical phonon modes in cuprate superconductors remains an unsolved problem. The exploration of these excitations is however complicated by the presence of twinned domains. Here, we use
Externí odkaz:
http://arxiv.org/abs/2406.15062
We undertake a novel approach to the existence problem for gravitating vortices on a Riemann surface based on symplectic reduction by stages, which seems to be new in the PDE as well as the gauge theory literature. The main technical tool for our stu
Externí odkaz:
http://arxiv.org/abs/2406.03639
Autor:
Hayashida, S., Sundaramurthy, V., Puphal, P., Garcia-Fernandez, M., Zhou, Ke-Jin, Fenk, B., Isobe, M., Minola, M., Wu, Y. -M., Suyolcu, Y. E., van Aken, P. A., Keimer, B., Hepting, M.
Publikováno v:
Phys. Rev. B 109, 235106 (2024)
Recent x-ray spectroscopic studies have revealed spin excitations and charge density waves in thin films of infinite-layer (IL) nickelates. However, clarifying whether the origin of these phenomena is intrinsic to the material class or attributable t
Externí odkaz:
http://arxiv.org/abs/2403.00493
Autor:
Agrestini, S., Borgatti, F., Florio, P., Frassineti, J., Mosca, D. Fiore, Faure, Q., Detlefs, B., Sahle, C. J., Francoual, S., Choi, J., Garcia-Fernandez, M., Zhou, K. -J., Mitrovic, V. F., Woodward, P. M., Ghiringhelli, G., Franchini, C., Boscherini, F., Sanna, S., Sala, and M. Moretti
Publikováno v:
Phys. Rev. Lett. 133, 066501 (2024)
A supposedly nonmagnetic 5d$^1$ double perosvkite oxide is investigated by a combination of spectroscopic and theoretical methods, namely resonant inelastic X-ray scattering, X-ray absorption spectroscopy, magnetic circular dichroism, and multiplet l
Externí odkaz:
http://arxiv.org/abs/2401.12035
Autor:
Rossi, M., Lu, H., Lee, K., Goodge, B. H., Choi, J., Osada, M., Lee, Y., Li, D., Wang, B. Y., Jost, D., Agrestini, S., Garcia-Fernandez, M., Shen, Z. X., Zhou, Ke-Jin, Been, E., Moritz, B., Kourkoutis, L. F., Devereaux, T. P., Hwang, H. Y., Lee, W. S.
We conducted a comparative study of the rare-earth infinite-layer nickelates films, RNiO2 (R = La, Pr, and Nd) using resonant inelastic X-ray scattering (RIXS). We found that the gross features of the orbital configurations are essentially the same,
Externí odkaz:
http://arxiv.org/abs/2312.16444
Autor:
von Arx, K., Rothenbühler, P., Wang, Qisi, Choi, J., Garcia-Fernandez, M., Agrestini, S., Zhou, Ke-Jin, Vecchione, A., Fittipaldi, R., Sassa, Y., Cuoco, M., Forte, F., Chang, J.
Multi-band Mott insulators with moderate spin-orbit and Hund's coupling are key reference points for theoretical concept developments of correlated electron systems. The ruthenate Mott insulator Ca$_{2}$RuO$_{4}$ has therefore been intensively studie
Externí odkaz:
http://arxiv.org/abs/2312.04406
Autor:
Li, X. T., Tu, S. J., Chaix, L., Fawaz, C., d'Astuto, M., Li, X., Yakhou-Harris, F., Kummer, K., Brookes, N. B., Garcia-Fernandez, M., Zhou, K. J., Lin, Z. F., Yuan, J., Jin, K., Dean, M. P. M., Liu, X.
Publikováno v:
Phys. Rev. Lett. 132, 056002 (2024)
We investigated the high energy spin excitations in electron-doped $\mathrm{La}_{2-x} \mathrm{Ce}_x \mathrm{CuO}_{4}$, a cuprate superconductor, by resonant inelastic x-ray scattering (RIXS) measurements. Efforts were paid to disentangle the paramagn
Externí odkaz:
http://arxiv.org/abs/2310.13214
Autor:
Biało, I., Martinelli, L., De Luca, G., Worm, P., Drewanowski, A., Choi, J., Garcia-Fernandez, M., Agrestini, S., Zhou, Ke-Jin, Kummer, K., Brookes, N. B., Guo, L., Edgeton, A., Eom, C. B., Tomczak, J. M., Held, K., Gibert, M., Wang, Qisi, Chang, J.
Publikováno v:
Commun. Phys. 7, 230 (2024)
Magnetic frustration is a route that can lead to the emergence of novel ground states, including spin liquids and spin ices. Such frustration can be introduced through either the geometry of lattice structures or by incompatible exchange interactions
Externí odkaz:
http://arxiv.org/abs/2306.05828
Autor:
Scott, K., Kisiel, E., Boyle, T. J., Basak, R., Jargot, G., Das, S., Agrestini, S., Garcia-Fernandez, M., Choi, J., Pelliciari, J., Li, J., Chuang, Y. D., Zhong, R. D., Schneeloch, J. A., Gu, G. D., Légaré, F., Kemper, A. F., Zhou, Ke-Jin, Bisogni, V., Blanco-Canosa, S., Frano, A., Boschini, F., Neto, E. H. da Silva
Publikováno v:
Science Advances 9, eadg3710 (2023)
In the study of dynamic charge order correlations in the cuprates, most high energy-resolution resonant inelastic x-ray scattering (RIXS) measurements have focused on momenta along the high-symmetry directions of the copper oxide plane. However, elec
Externí odkaz:
http://arxiv.org/abs/2301.08415