Zobrazeno 1 - 10
of 1 653
pro vyhledávání: '"Valenti', R."'
Autor:
Doležal, P., Biesner, T., Li, Y., Roy, R. Mathew, Roh, S., Valentí, R., Dressel, M., Puphal, P., Pustogow, A.
Publikováno v:
Phys. Rev. B 110, 174445 (2024)
Studying the magnetic ground states of frustrated antiferromagnets provides unique insight into the stability of quantum spin liquids, even if the anticipated state is not realized towards T = 0. Particularly relevant are structural modifications set
Externí odkaz:
http://arxiv.org/abs/2411.19720
Autor:
Huyan, S., Schmidt, J., Valadkhani, A., Wang, H., Li, Z., Sapkota, A., Petri, J. L., Slade, T. J., Ribeiro, R. A., Bi, W., Xie, W., Mazin, I. I., Valenti, R., Bud'ko, S. L., Canfield, P. C.
We present high pressure electrical transport, magnetization, and single crystal X-ray diffraction data on SrCo2P2 single crystals. X-ray diffraction data show that there is a transition to a collapsed tetragonal structure for p ~> 10 GPa and measure
Externí odkaz:
http://arxiv.org/abs/2411.05981
Autor:
Fedchenko, O., Song, Y. -J., Tkach, O., Lytvynenko, Y., Chernov, S. V., Gloskovskii, A., Schlueter, C., Peters, M., Kliemt, K., Krellner, C., Valenti, R., Schoenhense, G., Elmers, H. J.
Hard X-ray angle-resolved photoemission spectroscopy reveals significant alterations in the valence band states of EuPd$_2$Si$_2$ at a temperature $T_V$, where the Eu ions undergo a temperature-induced valence crossover from a magnetic Eu$^{2+}$ stat
Externí odkaz:
http://arxiv.org/abs/2410.18597
Autor:
Kirschbaum, D. M., Yan, X., Waas, M., Svagera, R., Prokofiev, A., Stöger, B., Giester, G., Rogl, P., Oprea, D. -G., Felser, C., Valentí, R., Vergniory, M. G., Custers, J., Paschen, S., Zocco, D. A.
Publikováno v:
Phys. Rev. Research 6, 023242 (2024)
The family of cubic noncentrosymmetric 3-4-3 compounds has become a fertile ground for the discovery of novel correlated metallic and insulating phases. Here, we report the synthesis of a new heavy fermion compound, Ce$_3$Bi$_4$Ni$_3$. It is an isoel
Externí odkaz:
http://arxiv.org/abs/2311.17903
Autor:
Fedchenko, O., Song, Y. -J., Tkach, O., Lytvynenko, Y., Chernov, S. V., Gloskovskii, A., Schlueter, C., Peters, M., Kliemt, K., Krellner, C., Valentí, R., Schönhense, G., Elmers, H. J.
We present results of hard X-ray angle-resolved photoemission spectroscopy and photoemission diffraction measurements performed on high-quality single crystals of the valence transition compound EuPd$_2$Si$_2$ for temperatures 25~K $\leq$ T $\leq$ 30
Externí odkaz:
http://arxiv.org/abs/2310.06421
Autor:
Hu, H., Rai, G., Crippa, L., Herzog-Arbeitman, J., Călugăru, D., Wehling, T., Sangiovanni, G., Valenti, R., Tsvelik, A. M., Bernevig, B. A.
We use the topological heavy fermion (THF) model and its Kondo Lattice (KL) formulation to study the symmetric Kondo state in twisted bilayer graphene. Via a large-N approximation, we find a symmetric Kondo (SK) state in KL mode at fillings $\nu=0,\p
Externí odkaz:
http://arxiv.org/abs/2301.04673
Autor:
Wolf, B., Kaib, D. A. S., Razpopov, A., Biswas, S., Riedl, K., Winter, S. M., Valentí, R., Saito, Y., Hartmann, S., Vinokurova, E., Doert, T., Isaeva, A., Bastien, G., Wolter, A. U. B., Büchner, B., Lang, M.
We report a detailed experimental and theoretical study on the effect of hydrostatic pressure on the structural and magnetic aspects of the layered honeycomb antiferromagent $\alpha$-RuCl$_{3}$. Magnetic susceptibility measurements performed under al
Externí odkaz:
http://arxiv.org/abs/2206.13178
Autor:
Kim, T. K., Pervakov, K. S., Vlasenko, V. A., Sadakov, A. V., Usoltsev, A. S., Evtushinsky, D. V., Jung, S. W., Poelchen, G., Kummer, K., Roditchev, D., Stolyarov, V. S., Golovchanskiy, I. A., Vyalikh, D. V., Borisov, V., Valenti, R., Ernst, A., Eremeev, S. V., Chulkov, E. V., Pudalov, V. M.
Publikováno v:
Physics-Uspekhi, 65(7) 740 (2022)
In the novel stoichiometric iron-based material RbEuFe4As4 superconductivity coexists with a peculiar long-range magnetic order of Eu 4f states; their coexistance is puzzling and represents a challenge for both experiment and theory. Using angle-reso
Externí odkaz:
http://arxiv.org/abs/2108.13928
Autor:
Bachus, S., Kaib, D. A. S., Jesche, A., Tsurkan, V., Loidl, A., Winter, S. M., Tsirlin, A. A., Valentí, R., Gegenwart, P.
Publikováno v:
Phys. Rev. B 103, 054440 (2021)
Thermodynamics of the Kitaev honeycomb magnet $\alpha$-RuCl$_3$ is studied for different directions of in-plane magnetic field using measurements of the magnetic Gr\"uneisen parameter $\Gamma_B$ and specific heat $C$. We identify two critical fields
Externí odkaz:
http://arxiv.org/abs/2101.07275
Autor:
Heinsdorf, N., Christensen, M. H., Iraola, M., Zhang, S., Yang, F., Birol, T., Batista, C. D., Valentí, R., Fernandes, R. M.
Publikováno v:
Phys. Rev. B 104, 075101 (2021)
Employing a combination of symmetry analysis, low-energy modeling, and ab initio simulations, we predict the presence of magnetic-field-induced Weyl points close to the Fermi level in CaKFe$_4$As$_4$. Depending on the relative strengths of the magnet
Externí odkaz:
http://arxiv.org/abs/2101.05301