Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Paerschke, Ekaterina"'
Autor:
Paris, Eugenio, Tseng, Yi, Pärschke, Ekaterina M., Zhang, Wenliang, Upton, Mary H., Efimenko, Anna, Rolfs, Katharina, McNally, Daniel E., Maurel, Laura, Naamneh, Muntaser, Caputo, Marco, Strocov, Vladimir N., Wang, Zhiming, Casa, Diego, Schneider, Christof W., Pomjakushina, Ekaterina, Wohlfeld, Krzysztof, Radovic, Milan, Schmitt, Thorsten
In the high spin-orbit coupled Sr2IrO4, the high sensitivity of the ground state to the details of the local lattice structure shows a large potential for the manipulation of the functional properties by inducing local lattice distortions. We use epi
Externí odkaz:
http://arxiv.org/abs/2009.12262
Publikováno v:
Condensed Matter 5, 53 (2020)
Several realistic spin-orbital models for transition metal oxides go beyond the classical expectations and could be understood only by employing the quantum entanglement. Experiments on these materials confirm that spin-orbital entanglement has measu
Externí odkaz:
http://arxiv.org/abs/2009.11773
Autor:
Paerschke, Ekaterina
In the last decade, a large number of studies have been devoted to the peculiarities of correlated physics found in the quasi-two-dimensional square lattice iridium oxides. It was shown that this 5d family of transition metal oxides has strong struct
Externí odkaz:
http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-235245
http://www.qucosa.de/fileadmin/data/qucosa/documents/23524/ttt_pdfa.pdf
http://www.qucosa.de/fileadmin/data/qucosa/documents/23524/ttt_pdfa.pdf
Autor:
Gotfryd, Dorota, Paerschke, Ekaterina M., Chaloupka, Jiri, Oles, Andrzej M., Wohlfeld, Krzysztof
Publikováno v:
Phys. Rev. Research 2, 013353 (2020)
The concept of the entanglement between spin and orbital degrees of freedom plays a crucial role in understanding various phases and exotic ground states in a broad class of materials, including orbitally ordered materials and spin liquids. We invest
Externí odkaz:
http://arxiv.org/abs/1911.12180
Autor:
Sun, Zhixiang, Guevara, Jose M., Sykora, Steffen, Pärschke, Ekaterina M., Brink, Jeroen van den, Manna, Kaustuv, Maljuk, Andrey, Wurmehl, Sabine, Büchner, Bernd, Hess, Christian
Publikováno v:
Phys. Rev. Research 3, 023075 (2021)
Despite many efforts to rationalize the strongly correlated electronic ground states in doped Mott insulators, the nature of the doping induced insulator to metal transition is still a subject under intensive investigation. Here we probe the nanoscal
Externí odkaz:
http://arxiv.org/abs/1909.10207
Autor:
Zhang, Jianbo, Yan, Dayu, Yesudhas, Sorb, Deng, Hongshan, Xiao, Hong, Chen, Bijuan, Sereika, Raimundas, Yin, Xia, Yi, Changjiang, Shi, Youguo, Liu, Zhenxian, Pärschke, Ekaterina M., Chen, Cheng-Chien, Chang, Jun, Ding, Yang, Mao, Ho-kwang
Publikováno v:
npj Quantum Materials (2019) 4:23
The intertwined charge, spin, orbital, and lattice degrees of freedom could endow 5d compounds with exotic properties. Current interest is focused on electromagnetic interactions in these materials, whereas the important role of lattice geometry rema
Externí odkaz:
http://arxiv.org/abs/1905.09637
Autor:
Pärschke, Ekaterina M., Wang, Yao, Moritz, Brian, Devereaux, Thomas P., Chen, Cheng-Chien, Wohlfeld, Krzysztof
Publikováno v:
Phys. Rev. B 99, 205102 (2019)
We study the doping evolution of spin excitations in a 1D Hubbard model and its downfolded spin Hamiltonians, by using exact diagonalization combined with cluster perturbation theory. In all models, we observe hardening (softening) of spin excitation
Externí odkaz:
http://arxiv.org/abs/1902.06311
Autor:
Guevara, Jose M., Sun, Zhixiang, Pärschke, Ekaterina M., Sykora, Steffen, Manna, Kaustuv, Schoop, Johannes, Maljuk, Andrey, Wurmehl, Sabine, Brink, Jeroen van den, Büchner, Bernd, Hess, Christian
Publikováno v:
Phys. Rev. B 99, 121114 (2019)
The motion of doped electrons or holes in an antiferromagnetic lattice with strong on-site Coulomb interactions touches one of the most fundamental open problems in contemporary condensed matter physics. The doped charge may strongly couple to elemen
Externí odkaz:
http://arxiv.org/abs/1802.10028
Publikováno v:
Phys. Rev. B 98, 064422 (2018)
Most of the low-energy effective descriptions of spin-orbit driven Mott insulators consider spin orbit coupling (SOC) as a second order perturbation to electron-electron interactions. However, when SOC is comparable to anisotropic Hund's coupling, su
Externí odkaz:
http://arxiv.org/abs/1802.04158
Publikováno v:
Nature Communications 8, 686 (2017)
We determine the motion of a charge (hole or electron) added to the Mott insulating, antiferromagnetic (AF) ground-state of quasi-2D iridates such as Ba 2 IrO 4 or Sr 2 IrO 4 . We show that correlation effects, calculated within the self-consistent B
Externí odkaz:
http://arxiv.org/abs/1705.04571