Zobrazeno 1 - 10
of 72
pro vyhledávání: '"DI Khomskii"'
Autor:
Antoine Maignan, Sylvie Hébert, Claude Michel, DI Khomskii, Denis Pelloquin, Maryvonne Hervieu
Publikováno v:
Journal of Physics-Condensed Matter, 15(17):PII S0953-8984(03)55348-6, 2711-2723. IOP PUBLISHING LTD
Two new compounds of the Bi/Ca/Co/O and Bi(Pb)/Ca/Co/O systems have been prepared. Their structure is built up from the intergrowth of four rock-salt-type layers and one [CoO2] hexagonal layer. Both cobaltites exhibit large thermopower values (S-300
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::923633fd1abdc23d8abc6c929d81298f
https://doi.org/10.1088/0953-8984/15/17/323
https://doi.org/10.1088/0953-8984/15/17/323
Autor:
W. Geertsma, DI Khomskii
Publikováno v:
Physical Review. B: Condensed Matter and Materials Physics, 54(5), 3011-3014. AMER PHYSICAL SOC
A mechanism is suggested which can modify in certain cases the Goodenough-Kanamori-Anderson rules determining the character of superexchange in magnetic insulators; namely, side groups coupled to ligands, which are often present but are usually ignor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d077f2d68a4284412880b8c6ef8629c9
https://doi.org/10.1103/physrevb.54.3011
https://doi.org/10.1103/physrevb.54.3011
Publikováno v:
Journal of Magnetism and Magnetic Materials, 272-276, 407-409
The effect of 16 O→ 18 O isotope substitution on electrical resistivity and magnetic susceptibility of Sm 1− x Sr x MnO 3 manganites is analyzed. It is shown that the oxygen isotope substitution drastically affects the phase diagram at the crosso
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a91bb81c27e8aab2d5b0c5ed0eac8246
https://doi.org/10.1016/j.jmmm.2003.11.121
https://doi.org/10.1016/j.jmmm.2003.11.121
Publikováno v:
Physical Review B. 74
We present a $^{17}\mathrm{O}$ NMR study of the half-doped manganite, ${\mathrm{Pr}}_{0.5}{\mathrm{Ca}}_{0.5}{\mathrm{MnO}}_{3}$ at $T\ensuremath{\leqslant}10\phantom{\rule{0.3em}{0ex}}\mathrm{K}$. The charge-ordered and the ferromagnetic states are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::12e312020c2cb4e38bea06fb5a7023e6
https://doi.org/10.1103/physrevb.74.092403
https://doi.org/10.1103/physrevb.74.092403
Autor:
V. V. Ogloblichev, S.-W. Cheong, K. N. Mikhalev, A. Trokiner, Yu. V. Piskunov, DI Khomskii, A. Gerashenko, A. Pogudin, J. S. Ahn, K. Kumagai, Yoshinori Furukawa, A. Yakubovskii, S. V. Verkhovskii
Publikováno v:
Physical Review B. 72
We present a $^{209}\mathrm{Bi}$ and $^{17}\mathrm{O}$ NMR study of the Mn electron spin correlations developed in the charge ordered state of ${\mathrm{Bi}}_{0.5}{\mathrm{Sr}}_{0.5}{\mathrm{MnO}}_{3}$ and ${\mathrm{Bi}}_{0.5}{\mathrm{Ca}}_{0.5}{\mat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ead0bea6a86c0f0c890e1e8ee06d6f94
https://doi.org/10.1103/physrevb.72.054442
https://doi.org/10.1103/physrevb.72.054442
Autor:
Evgeny V. Antipov, Vladimir Pomjakushin, Denis Sheptyakov, Peter M. Fischer, Marina G. Rozova, M. Alekseeva, Anatoly M. Balagurov, DI Khomskii, Artem M. Abakumov, V. Yushankhai
Publikováno v:
Journal of Magnetism and Magnetic Materials, 272-276(2), 820-822
The layered brownmillerite-type manganese oxide system Sr2GaMnO5+x with mixed Mn3+/ Mn4+ valence has been studied by neutron powder diffraction. The type of magnetic order is controlled by both the structure of the nonmagnetic GaO1+x buffer layer and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3afcfc506378b5091be65a16f3d174a7
https://doi.org/10.1016/j.jmmm.2003.11.336
https://doi.org/10.1016/j.jmmm.2003.11.336
Publikováno v:
Physical Review B. 68
We report on giant positive magnetoresistance (MR) effect observed in ${\mathrm{VO}}_{x}$ thin films, epitaxially grown on ${\mathrm{SrTiO}}_{3}$ substrate. The MR effect depends strongly on temperature and oxygen content and is anisotropic. At low t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f0d5931170b0c886c50090662665b6bd
https://doi.org/10.1103/physrevb.68.220403
https://doi.org/10.1103/physrevb.68.220403
Publikováno v:
Physical Review B. 68
The magnetic and transport properties of the ${\mathrm{Pr}}_{1\ensuremath{-}x}{\mathrm{Ca}}_{x}{\mathrm{MnO}}_{3}$ system were studied at the characteristic points of the phase diagram corresponding to the ferromagnetic insulating and charge-ordered
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7d307cb28fd5259e6dddbe97850a964
https://doi.org/10.1103/physrevb.68.174403
https://doi.org/10.1103/physrevb.68.174403
Autor:
DI Khomskii, Maxim Mostovoy
Publikováno v:
Journal of Physics A-Mathematical and General, 36(35):PII S0305-4470(03)59765-7, 9197-9207. IOP PUBLISHING LTD
An orbital ordering occurs in many transition metal compounds with Jahn-Teller ions and plays an important role in these materials. At the same time, exchange interactions in orbitally degenerate systems are inherently frustrated, even in materials w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bab4504043b1cffeef6d402e97785932
https://research.rug.nl/en/publications/a7b58ad9-45a4-4645-8ea5-31bea62f2c81
https://research.rug.nl/en/publications/a7b58ad9-45a4-4645-8ea5-31bea62f2c81
Publikováno v:
Physical Review B. 67
The nickel (II) formate dihydrate Ni(HCOO)(2).2H(2)O shows a peculiar magnetic response at T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::697b6d47bf67a80f0827168d6705c323
https://doi.org/10.1103/physrevb.67.224422
https://doi.org/10.1103/physrevb.67.224422