The Jahn-Teller Distortion at High Pressure: The Case of Copper Difluoride
نویسندگان
چکیده
منابع مشابه
Pressure-induced quenching of the Jahn-Teller distortion and insulator-to-metal transition in LaMnO(3).
LaMnO(3) was studied by synchrotron x-ray diffraction, optical spectroscopies, and transport measurements under pressures up to 40 GPa. The cooperative Jahn-Teller (JT) distortion is continuously reduced with increasing pressure. There is strong indication that the JT effect and the concomitant orbital order are completely suppressed above 18 GPa. The system, however, retains its insulating sta...
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High-pressure optical-absorption measurements performed in CuWO(4) up to 20 GPa provide experimental evidence of the persistence of the Jahn-Teller (JT) distortion in the whole pressure range both in the low-pressure triclinic and in the high-pressure monoclinic phase. The electron-lattice couplings associated with the e(g)(E⊗e) and t(2g)(T⊗e) orbitals of Cu(2+) in CuWO(4) are obtained from cor...
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Hexaaquacopper(II) dinitrate: absence of Jahn–Teller distortion. Corrigendum
The published crystal structure in the paper by Zibaseresht & Hartshorn (2006) is almost certainly that of the nickel complex and not the copper complex as originally identified. Refinement of the copper occupancy was consistent with the presence of a lighter transition metal ion in the structure, and residuals improved significantly when the complex was refined as the nickel or cobalt salts. U...
متن کاملOrigin of Jahn-Teller distortion and orbital order in LaMnO3.
The origin of the cooperative Jahn-Teller distortion and orbital order in LaMnO3 is central to the physics of the manganites. The question is complicated by the simultaneous presence of tetragonal and GdFeO3-type distortions and the strong Hund's rule coupling between e{g} and t{2g} electrons. To clarify the situation we calculate the transition temperature for the Kugel-Khomskii superexchange ...
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ژورنال
عنوان ژورنال: Crystals
سال: 2018
ISSN: 2073-4352
DOI: 10.3390/cryst8030140