Dynamical Jahn-Teller Effect and Antiferromagnetism inCs3C60
نویسندگان
چکیده
منابع مشابه
Dynamical Jahn-Teller effect and antiferromagnetism in Cs3C60.
The dynamical Jahn-Teller effect on fullerene sites in insulating Cs(3)C(60) is investigated fully ab initio. The vibronic excitations of rotational type are at ≥ 65 cm(-1), while the net kinetic contribution to the Jahn-Teller stabilization energy constitutes approximately 90 meV. This means that no localization of distortions by intermolecular interactions is possible in these fullerides; the...
متن کاملJahn - Teller Effect in Diamond - like Carbon
The Jahn-Teller effect used semi-theoretically to analyse UV-visible spectra of the diamond like-carbon films on Si substrates. By deconvolution of UV-visible absorption spectra of the typical films, different absorption lines found. For each sample, six lines which were related to V • by Jahn-Teller effect are distinguished. Our theoretical approach based on distortion of the V • as the conseq...
متن کاملDynamical Jahn-Teller effect and Berry phase in positively charged fullerenes: Basic considerations.
We study the Jahn-Teller effect of positive fullerene ions C60 and 1C 60 . The aim is to discover if this case, in analogy with the negative ion, possesses a Berry phase or not, and what are the consequences on dynamical Jahn-Teller quantization. Working in the linear and spherical approximation, we find no Berry phase in 1C 60 , and presence/absence of Berry phase for coupling of one L = 2 hol...
متن کاملDynamical Jahn - Teller effect, double exchange and the isotope shift in the manganites: a toy model
A minimal model, consisting of a 4 × 4 Hamiltonian and pertaining to a single Mn–O–Mn bond in the manganites, is introduced and solved to elucidate the physics of the dynamical Jahn–Teller effect on the double-exchange (DEX) interaction. The effect originates from the coupling of the motion of the bridging oxygen atom to the Mn electrons. It is shown that (i) the DEX interaction is considerably...
متن کاملJahn-Teller effect and Electron Correlation in manganites
Jahn-Teller (JT) effect both in the absence and presence of the strong Coulomb correlation is studied theoretically focusing on the reduction ∆K of the kinetic energy gain which is directly related to the spin wave stiffness. Without the Coulomb interaction, the perturbative analysis gives ∆K/(g2/MΩ2) ∼= 0.05− 0.13 depending on the electron number [g: electronphonon(el-ph) coupling constant, M ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2013
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.111.056401