Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Dmitri V. Efremov"'
Autor:
Michael Vogl, Martin Valldor, Roman Boy Piening, Dmitri V. Efremov, Bernd Büchner, Saicharan Aswartham
Publikováno v:
Electronic Materials, Vol 3, Iss 1, Pp 41-52 (2022)
We present the synthesis and characterization of the iridium-based sulfide Ca1−xIr4S6(S2). Quality and phase analysis were conducted by means of energy-dispersive X-ray spectroscopy (EDXS) and powder X-ray diffraction (XRD) techniques. Structure an
Externí odkaz:
https://doaj.org/article/ea778966c9ff47c79e2fa2e2fa497080
Publikováno v:
SciPost Physics Lecture Notes, p 65 (2022)
We present a comprehensive pedagogical discussion of a family of models describing the propagation of a single particle in a multicomponent non-Markovian Gaussian random field. We report some exact results for single-particle Green's functions, self-
Externí odkaz:
https://doaj.org/article/214de8051e724827ae988c6bac65cedf
Autor:
Andrey I. Shilov, Kirill S. Pervakov, Konstantin A. Lyssenko, Vladimir A. Vlasenko, Dmitri V. Efremov, Saicharan Aswartham, Sergey V. Simonov, Igor V. Morozov, Andrei V. Shevelkov
Publikováno v:
Zeitschrift für anorganische und allgemeine Chemie. 649
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a998db8d5d4a732932a830b98e83239
https://doi.org/10.1002/zaac.202200298
https://doi.org/10.1002/zaac.202200298
Autor:
Dmitri V. Efremov, Klaus Koepernik, Jorge I. Facio, Inti Sodemann, Jeroen van den Brink, Jhih-Shih You
Publikováno v:
Physical Review Letters
Transitions between topologically distinct electronic states have been predicted in different classes of materials and observed in some. A major goal is the identification of measurable properties that directly expose the topological nature of such t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c38f367b79a46b8556cb04a1c632970
https://hdl.handle.net/21.11116/0000-0002-BDEC-021.11116/0000-0002-BDEE-E
https://hdl.handle.net/21.11116/0000-0002-BDEC-021.11116/0000-0002-BDEE-E
Publikováno v:
Physica B: Condensed Matter. :1433-1435
We show that in manganites close to half-doping, novel non-bipartite magnetic phases appear due to the interplay between double exchange, superexchange and orbital ordering. In considerable part of the phase diagram the ground state has a magnetic or
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1dfb063e57c5dcfe096c38dfe0a01fd4
https://doi.org/10.1016/j.physb.2005.01.440
https://doi.org/10.1016/j.physb.2005.01.440
Autor:
Dmitri V. Efremov, Richard A. Klemm
Publikováno v:
Physical Review B. 77
We study single-ion and exchange anisotropy effects in equal-spin $s_1$ tetramer single molecule magnets exhibiting $T_d$, $D_{4h}$, $D_{2d}$, $C_{4h}$, $C_{4v}$, or $S_4$ ionic point group symmetry. We first write the group-invariant quadratic singl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a89b4ea80c34b10d4e76277cd5711551
https://doi.org/10.1103/physrevb.77.184410
https://doi.org/10.1103/physrevb.77.184410
Autor:
Dmitri V. Efremov, Richard A. Klemm
Publikováno v:
Physical Review B. 74
We present a model of equal spin $s_1$ dimer single molecule magnets. The spins within each dimer interact via the Heisenberg and the most general set of four quadratic anisotropic spin interactions with respective strengths $J$ and $\{J_j\}$, and wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dabb1dd92546f4bd949226cfad39da86
https://doi.org/10.1103/physrevb.74.064408
https://doi.org/10.1103/physrevb.74.064408
Autor:
Dmitri V. Efremov, D. I. Khomskii
Publikováno v:
Physical Review. B: Condensed Matter and Materials Physics, 72(1):012402. AMER PHYSICAL SOC
We consider the orbital ordering in LaMnO3 and similar systems, proceeding from the band picture. We show that for the realistic magnetic structure of A-type there exists a complete nesting betweeen two e_g-bands. As a result there occurs an instabil
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ded4cf632a1e59dfa9f3187aaf02f7b4
https://doi.org/10.1103/physrevb.72.012402
https://doi.org/10.1103/physrevb.72.012402