Zobrazeno 1 - 10
of 737
pro vyhledávání: '"Sidis, Y"'
Autor:
Jenni, K., Kunkemöller, S., Tewari, A., Ewings, R. A., Sidis, Y., Schneidewind, A., Steffens, P., Nugroho, A. A., Braden, M.
The magnetic excitations in ferromagnetic SrRuO$_3$ were studied by inelastic neutron scattering combining experiments on triple-axis and time-of-flight spectrometers with and without polarization analysis. A quadratic spin-wave dispersion with an an
Externí odkaz:
http://arxiv.org/abs/2305.05497
Autor:
Biesenkamp, S., Gorkov, D., Schmidt, W., Schmalzl, K., Sidis, Y., Becker, P., Bohatý, L., Braden, M.
The magnetic structure and the multiferroic relaxation dynamics of NaFeGe$_2$O$_6$ were studied by neutron scattering on single crystals partially utilizing polarization analysis. In addition to the previously reported transitions, the incommensurate
Externí odkaz:
http://arxiv.org/abs/2105.06875
Publikováno v:
Phys. Rev. B 102, 144429 (2020)
The structural distortion and magnetoelastic coupling induced through commensurate magnetism has been investigated by neutron diffraction in structurally related MnWO$_4$ and NaFe(WO$_4$)$_2$. Both systems exhibit a competition of incommensurate spir
Externí odkaz:
http://arxiv.org/abs/2009.03666
Autor:
Jenni, K., Wirth, F., Dietrich, K., Berger, L., Sidis, Y., Kunkemöller, S., Grams, C. P., Khomskii, D. I., Hemberger, J., Braden, M.
Publikováno v:
Phys. Rev. Materials 4, 085001 (2020)
Combining quasistatic and time-resolved transport measurements with X-ray and neutron diffraction experiments we study the non-equilibrium states that arise in pure and in Ti substituted Ca$_2$RuO$_4$ under the application of current densities. Time-
Externí odkaz:
http://arxiv.org/abs/2007.00444
Autor:
Portnichenko, P. Y., Akbari, A., Nikitin, S. E., Cameron, A. S., Dukhnenko, A. V., Filipov, V. B., Shitsevalova, N. Yu., Cermak, P., Radelytskyi, I., Schneidewind, A., Ollivier, J., Podlesnyak, A., Huesges, Z., Xu, J., Ivanov, A., Sidis, Y., Petit, S., Mignot, J. -M., Thalmeier, P., Inosov, D. S.
Publikováno v:
Phys. Rev. X 10, 021010 (2020)
In contrast to magnetic order formed by electrons' dipolar moments, ordering phenomena associated with higher-order multipoles (quadrupoles, octupoles, etc.) are more difficult to characterize because of the limited choice of experimental probes that
Externí odkaz:
http://arxiv.org/abs/2001.01672
Autor:
Wasser, F., Park, J. -T., Aswartham, S., Wurmehl, S., Sidis, Y., Steffens, P., Schmalzl, K., Büchner, B., Braden, M.
Publikováno v:
npj Quantum Mater. 4, 59 (2019)
Spin-resonance modes (SRM) are taken as evidence for magnetically driven pairing in Fe-based superconductors, but their character remains poorly understood. The broadness, the splitting and the spin-space anisotropies of SRMs contrast with the mostly
Externí odkaz:
http://arxiv.org/abs/1909.03046
Publikováno v:
Phys. Rev. B 100, 224511 (2019)
The mysterious pseudo-gap (PG) phase of cuprate superconductors has been the subject of intense investigation over the last thirty years, but without a clear agreement about its origin. Owing to a recent observation in Raman spectroscopy, of a precur
Externí odkaz:
http://arxiv.org/abs/1906.01633
Publikováno v:
Phys. Rev. Lett. 122, 047004 (2019)
Triplet pairing in Sr2RuO4 was initially suggested based on the hypothesis of strong ferromagnetic spin fluctuations. Using polarized inelastic neutron scattering, we accurately determine the full spectrum of spin fluctuations in Sr2RuO4. Besides the
Externí odkaz:
http://arxiv.org/abs/1808.05855
Publikováno v:
Phys. Rev. B 98, 016501 (2018)
Intra-unit cell magnetic order has been observed in four different families of high-temperature superconductors from polarized neutron diffraction experiments and supported by several other techniques. That order, which does not break translation sym
Externí odkaz:
http://arxiv.org/abs/1710.08173
Autor:
Li, Shichao, Gan, Yuan, Wang, Jinghui, Zhong, Ruidan, Schneeloch, J. A., Xu, Zhijun, Tian, Wei, Stone, M. B., Chi, Songxue, Matsuda, M., Sidis, Y., Bourges, Ph., Li, Qiang, Gu, Genda, Tranquada, J. M., Xu, Guangyong, Birgeneau, R. J., Wen, Jinsheng
Publikováno v:
Phys. Rev. B 96, 094503 (2017)
We have combined elastic and inelastic neutron scattering techniques, magnetic susceptibility and resistivity measurements to study single-crystal samples of K$_x$Fe$_{2-y}$Se$_2$, which contain the superconducting phase that has a transition tempera
Externí odkaz:
http://arxiv.org/abs/1708.09115