Zobrazeno 1 - 10
of 422
pro vyhledávání: '"Khomskii, D I"'
Autor:
Khomskii, D. I., Streltsov, S. V.
Publikováno v:
Chapter to Encyclopedia of Condensed Matter Physics (2nd edition), 2, 98 (2024)
In this article we give a general survey of the main properties of magnetic oxides - mostly the oxides of transition metals, but sometime also containing rare earths ions. This is a very rich class of materials, among which there are insulators and m
Externí odkaz:
http://arxiv.org/abs/2212.14176
Autor:
Magnaterra, M., Sala, M. Moretti, Monaco, G., Becker, P., Hermanns, M., Warzanowski, P., Lorenz, T., Khomskii, D. I., van Loosdrecht, P. H. M., Brink, J. van den, Grüninger, M.
Publikováno v:
Phys. Rev. Research 5, 013167 (2023)
Motivated by several claims of spin-orbit driven spin-liquid physics in hexagonal Ba$_3$Ti$_{3-x}$Ir$_x$O$_9$ hosting Ir2O9 dimers, we report on resonant inelastic x-ray scattering (RIXS) at the Ir L3 edge for different x. We demonstrate that magneti
Externí odkaz:
http://arxiv.org/abs/2211.13803
Publikováno v:
JETP 136, No, 3, 368-377 (2023)
We present theoretical analysis of Hall effect in doped Mott-Hubbard insulator, considered as a prototype of cuprate superconductor. We consider the standard Hubbard model within DMFT approximation. As a typical case we consider the partially filled
Externí odkaz:
http://arxiv.org/abs/2211.04102
Autor:
Revelli, A., Sala, M. Moretti, Monaco, G., Magnaterra, M., Attig, J., Peterlini, L., Dey, T., Tsirlin, A. A., Gegenwart, P., Fröhlich, T., Braden, M., Grams, C., Hemberger, J., Becker, P., van Loosdrecht, P. H. M., Khomskii, D. I., Brink, J. van den, Hermanns, M., Grüninger, M.
Publikováno v:
Phys. Rev. B 106, 155107 (2022)
The mixed-valent iridate Ba3InIr2O9 has been discussed as a promising candidate for quantum spin-liquid behavior. The compound exhibits Ir$^{4.5+}$ ions in face-sharing IrO6 octahedra forming Ir2O9 dimers with three t2g holes per dimer. Our results e
Externí odkaz:
http://arxiv.org/abs/2207.04795
Autor:
Mi, Xinrun, Hou, De, Wang, Xiao, Hammouda, Sabreen, Liu, Caixing, Xiong, Zijian, Li, Han, Wang, Aifeng, Chai, Yisheng, Qi, Yang, Li, Wei, Zhou, Xiaoyuan, Su, Yixi, Khomskii, D. I., He, Mingquan, Sheng, Zhigao, Sun, Young
Publikováno v:
Sci. China-Phys. Mech. Astron. 67, 297511, (2024)
The spin-orbit assisted Mott insulator $\alpha$-RuCl$_3$ is a prime candidate for material realization of the Kitaev quantum spin liquid. While little attention has been paid to charge degrees of freedom, charge effects, such as electric polarization
Externí odkaz:
http://arxiv.org/abs/2205.09530
Autor:
Vergara, I., Magnaterra, M., Attig, J., Kunkemöller, S., Khomskii, D. I., Braden, M., Hermanns, M., Grüninger, M.
Publikováno v:
Phys. Rev. B 106, 085103 (2022)
In Ca2RuO4, the competition of spin-orbit coupling $\zeta$ and tetragonal crystal field splitting $\Delta_{CF}$ has been discussed controversially for many years. The orbital occupation depends on $\Delta_{CF}/\zeta$, which allows us to address this
Externí odkaz:
http://arxiv.org/abs/2203.13651
Autor:
Khomskii, D. I.
Transition metal (TM) compounds present a very big class of materials with quite diverse properties. There are among them insulators, metals, systems with insulator-metal transitions; most magnetic systems are TM compounds; there are among them also
Externí odkaz:
http://arxiv.org/abs/2203.10151
Publikováno v:
Phys. Rev. B, 105(20), 205142 (2022)
We study an interplay between the orbital degeneracy and spin-orbit coupling giving rise to spin-orbital entangled states. As a specific example, we analyze the interaction of electrons occupying triply degenerate single-ion $t_{2g}$ levels with trig
Externí odkaz:
http://arxiv.org/abs/2203.02243
Publikováno v:
JETP Letters v. 115, 402-405 (2022)
In the framework of dynamical mean field theory (DMFT) we analyze Hall effect in doped Mott insulator as a parent cuprate superconductor. We consider the partial filling (hole doping) of the lower Hubbard band and calculate the dependence of Hall coe
Externí odkaz:
http://arxiv.org/abs/2203.00542
Autor:
Guo, H., Zhao, L., Baenitz, M., Fabrèges, X., Gukasov, A., Sans, A. Melendez, Khomskii, D. I., Tjeng, L. H., Komarek, A. C.
Publikováno v:
Physical Review RESEARCH 3, L032037 (2021)
Despite the absence of an apparent triangular pattern in the crystal structure, we observe unusually well pronounced 1/3 magnetization plateaus in the quasi one-dimensional Ising spin chain compound CoGeO$_3$ which belongs to the class of pyroxene mi
Externí odkaz:
http://arxiv.org/abs/2109.07367