Zobrazeno 1 - 10
of 502
pro vyhledávání: '"Mayr, F."'
Autor:
Schilberth, F., Jiang, M. -C., Minami, S., Kassem, M. A., Mayr, F., Deisenhofer, J., Koretsune, T., Tabata, Y., Waki, T., Nakamura, H., Guo, G. -Y., Arita, R., Kézsmárki, I., Bordács, S.
Giant anomalous Hall effect (AHE) and magneto-optical activity can emerge in magnets with topologically non-trivial degeneracies. However, identifying the specific band structure features like Weyl points, nodal lines or planes which generate the ano
Externí odkaz:
http://arxiv.org/abs/2301.13726
Autor:
Reschke, S., Meggle, F., Mayr, F., Tsurkan, V., Prodan, L., Nakamura, H., Deisenhofer, J., Kuntscher, C. A., Kézsmárki, I.
Publikováno v:
Phys. Rev. B 101, 075118 (2020)
Reproducing the electronic structure of AM$_4$X$_8$ lacunar spinels with a breathing pyrochlore lattice is a great theoretical challenge due to the interplay of various factors. The character of the M$_4$X$_4$ cluster orbitals is critically influence
Externí odkaz:
http://arxiv.org/abs/1912.11079
Autor:
Reschke, S., Mayr, F., Widmann, S., von Nidda, H. -A. Krug, Tsurkan, V., Eremin, M. V., Do, Seung-Hwan, Choi, K. -Y., Wang, Zhe, Loidl, A.
Publikováno v:
J. Phys.: Condens. Matter 30, 475604 (2018)
We report magnetic, thermodynamic, thermal expansion, and on detailed optical experiments on the layered compound $\alpha$-RuCl$_3$ focusing on the THz and sub-gap optical response across the structural phase transition from the monoclinic high-tempe
Externí odkaz:
http://arxiv.org/abs/1803.04887
Publikováno v:
Phys. Rev. B 96, 165120 (2017)
We report on THz, infrared reflectivity and transmission experiments for wave numbers from 10 to 8000 cm$^{-1}$ ($\sim$ 1 meV - 1 eV) and for temperatures from 5 to 295 K on the Kitaev candidate material {\alpha}-RuCl$_3$. As reported earlier, the co
Externí odkaz:
http://arxiv.org/abs/1706.02724
Publikováno v:
Phys. Rev. B 96, 144418 (2017)
We report on THz time-domain spectroscopy on multiferroic GeV4S8, which undergoes orbital ordering at a Jahn-Teller transition at 30.5 K and exhibits antiferromagnetic order below 14.6 K. The THz experiments are complemented by dielectric experiments
Externí odkaz:
http://arxiv.org/abs/1705.07055
Autor:
Reschke, S., Mayr, F., Wang, Zhe, Lunkenheimer, P., Li, W., Szaller, D., Bordács, S., Kézsmárki, I., Tsurkan, V., Loidl, A.
Publikováno v:
Phys. Rev. B 96, 144302 (2017)
We report on optical spectroscopy on the lacunar spinels GaV$_4$S$_8$ and GeV$_4$S$_8$ in the spectral range from 100 to 23000 cm$^{-1}$ and for temperatures from 5 to 300 K. These multiferroic spinel systems reveal Jahn-Teller driven ferroelectricit
Externí odkaz:
http://arxiv.org/abs/1704.08602
Autor:
Chen, Zhenyu, Schmidt, M., Wang, Zhe, Mayr, F., Deisenhofer, J., Mukhin, A. A., Balbashov, A. M., Loidl, A.
Here we present a detailed study of the THz and FIR response of the mixed perovskite manganite system Eu$_{1-x}$Ho$_x$MnO$_3$ for holmium concentrations x = 0.1 and 0.3. We compare the magnetic excitations of the four different magnetically ordered p
Externí odkaz:
http://arxiv.org/abs/1601.04486
Autor:
Mittelstädt, L., Schmidt, M., Wang, Zhe, Mayr, F., Tsurkan, V., Lunkenheimer, P., Ish, D., Balents, L., Deisenhofer, J., Loidl, A.
Publikováno v:
Phys. Rev. B 91 (2015) 125112
In FeSc2S4 spin-orbital exchange competes with strong spin-orbit coupling, suppressing long-range spin and orbital order and, hence, this material represents one of the rare examples of a spin-orbital liquid ground state. Moreover, it is close to a q
Externí odkaz:
http://arxiv.org/abs/1410.6459
Autor:
Schmidt, M., Wang, Zhe, Kant, Ch., Mayr, F., Toth, S., Islam, A. T. M. N., Lake, B., Tsurkan, V., Loidl, A., Deisenhofer, J.
Publikováno v:
Phys. Rev. B 87, 224424 (2013)
We report on optical transmission spectroscopy of the Cr-based frustrated triangular antiferromagnets CuCrO2 and alpha-CaCr2O4, and the spinels CdCr2O4 and ZnCr2O4 in the near-infrared to visible-light frequency range. We explore the possibility to s
Externí odkaz:
http://arxiv.org/abs/1210.3938
Autor:
Wang, Zhe, Schmidt, M., Günther, A., Mayr, F., Wan, Yuan, Lee, S. -H., Ueda, H., Ueda, Y., Loidl, A., Deisenhofer, J.
Publikováno v:
Phys. Rev. B 85, 224304 (2012)
We report on the phonon spectrum of Ba3Cr2O8 determined by infrared spectroscopy, and on specific heat measurements across the Jahn-Teller transition in magnetic fields up to 9 T. Phonon modes split below the Jahn-Teller transition, which occurs at T
Externí odkaz:
http://arxiv.org/abs/1205.2950