Zobrazeno 1 - 10
of 235
pro vyhledávání: '"Gretarsson H"'
Autor:
Gretarsson, H., Fujihara, H., Sato, F., Gotou, H., Imai, Y., Ohgushi, K., Keimer, B., Suzuki, H.
Publikováno v:
Physical Review B 109, L180413 (2024)
The recent synthesis of ruthenium trihalides Ru$X_3$ ($X$ = Cl, Br, I) has enlarged the set of material candidates for Kitaev spin liquid. The realization of Kitaev model necessitates the formation of $J=1/2$ pseudospins in the octahedral crystal fie
Externí odkaz:
http://arxiv.org/abs/2402.18783
Autor:
Suzuki, H., Wang, L., Bertinshaw, J., Strand, H. U. R., Käser, S., Krautloher, M., Yang, Z., Wentzell, N., Parcollet, O., Jerzembeck, F., Kikugawa, N., Mackenzie, A. P., Georges, A., Hansmann, P., Gretarsson, H., Keimer, B.
Publikováno v:
Nat. Commun. 14, 7042 (2023)
The unconventional superconductor Sr$_2$RuO$_4$ has long served as a benchmark for theories of correlated-electron materials. The determination of the superconducting pairing mechanism requires detailed experimental information on collective bosonic
Externí odkaz:
http://arxiv.org/abs/2212.00245
Autor:
Clancy, J. P., Gretarsson, H., Lupascu, A., Sears, J. A., Nie, Z., Upton, M. H., Kim, Jungho, Islam, Z., Uchida, M., Schlom, D. G., Shen, K. M., Kim, Young-June
We report a resonant inelastic x-ray scattering (RIXS) investigation of ultra-thin epitaxial films of Ba$_2$IrO$_4$, and compare their low energy magnetic and spin-orbit excitations to those of their sister compound Sr$_2$IrO$_4$. Due to the 180$^\ci
Externí odkaz:
http://arxiv.org/abs/2203.13102
Autor:
Krajewska, A., Yaresko, A., Nuss, J., Gibbs, A. S., Bette, S., Blankenhorn, M., Dinnebier, R. E., Sari, D. P., Watanabe, I., Bertinshaw, J., Gretarsson, H., Ishii, K., Matsumura, D., Tsuji, T., Isobe, M., Keimer, B., Takagi, H., Takayama, T.
The pyrochlore ruthenate In$_2$Ru$_2$O$_7$ displays a subtle competition between spin-orbital entanglement and molecular orbital formation. At room temperature, a spin-orbit-entangled singlet state was identified. With decreasing temperature, In$_2$R
Externí odkaz:
http://arxiv.org/abs/2111.05057
Autor:
Sen, K., Heid, R., Souliou, S. M., Boll, D., Bosak, A., Sung, N. H., Bertinshaw, J., Gretarsson, H., Kim, B. J., Weber, F., Tacon, M. Le
Publikováno v:
Phys. Rev. B 105, 045142 (2022)
Following previous works reporting an anomalous behavior of several zone-center optical phonons across the magnetic transition of square lattice iridates Sr2IrO4 and Sr3Ir2O7, we have investigated the lattice dynamics as a function of momentum in the
Externí odkaz:
http://arxiv.org/abs/2111.04081
Autor:
Takahashi, H., Suzuki, H., Bertinshaw, J., Bette, S., Mühle, C., Nuss, J., Dinnebier, R., Yaresko, A., Khaliullin, G., Gretarsson, H., Takayama, T., Takagi, H., Keimer, B.
Publikováno v:
Phys. Rev. Lett. 127, 227201 (2021)
Spin-orbit Mott insulators composed of $t_{2g}^4$ transition metal ions may host excitonic magnetism due to the condensation of spin-orbital $J=1$ triplons. Prior experiments suggest that the $4d$ antiferromagnet Ca$_{2}$RuO$_{4}$ embodies this notio
Externí odkaz:
http://arxiv.org/abs/2107.10046
Autor:
Amorese, A., Leedahl, B., Sundermann, M., Gretarsson, H., Hu, Z., Lin, H. -J., Chen, C. T., Schmidt, M., Borrmann, H., Grin, Yu., Severing, A., Haverkort, M. W., Tjeng, L. H.
Publikováno v:
Physical Review X 11, 011002 (2021)
Herein we show that non-resonant inelastic x-ray scattering involving an $s$ core level is a powerful spectroscopic method to characterize the excited states of transition metal compounds. The spherical charge distribution of the $s$ core hole allows
Externí odkaz:
http://arxiv.org/abs/2101.01947
Autor:
Bertinshaw, J., Krautloher, M., Suzuki, H., Takahashi, H., Ivanov, A., Kim, B. J., Gretarsson, H., Keimer, B.
Publikováno v:
Phys. Rev. B 103, 085108 (2021)
We use Ru $L_3$-edge resonant inelastic x-ray scattering (RIXS) to study the full range of excitations in Ca$_3$Ru$_2$O$_7$ from meV-scale magnetic dynamics through to the eV-scale interband transitions. This bilayer $4d$-electron correlated metal ex
Externí odkaz:
http://arxiv.org/abs/2012.10180
Autor:
Suzuki, H., Liu, H., Bertinshaw, J., Ueda, K., Kim, H., Laha, S., Weber, D., Yang, Z., Wang, L., Takahashi, H., Fürsich, K., Minola, M., Lotsch, B. V., Kim, B. J., Yavaş, H., Daghofer, M., Chaloupka, J., Khaliullin, G., Gretarsson, H., Keimer, B.
$\alpha$-RuCl$_{3}$ is a major candidate for the realization of the Kitaev quantum spin liquid, but its zigzag antiferromagnetic order at low temperatures indicates deviations from the Kitaev model. We have quantified the spin Hamiltonian of $\alpha$
Externí odkaz:
http://arxiv.org/abs/2008.02037
Publikováno v:
Phys. Rev. Mater. 3, 103604 (2019)
A structural transition in an ABO$_{3}$ perovskite thin film involving the change of the BO$_{6}$ octahedral rotation pattern can be hidden under the global lattice symmetry imposed by the substrate and often easily overlooked. We carried out high-re
Externí odkaz:
http://arxiv.org/abs/1911.00275