helix formationoptimised geometriespolyketonepolyisocyanidePeierls-like distortionpartially filled crossing bandsA new type of Peierls-like distortion, the formation of a helix due to the existence of partially filled crossing bands, is reported for polyketone and polyisocyanide. The torsional potential ...
This displacement pattern realizes a good compromise between the “2kF” PLD/CDW instability of the metallic bronze related to its quasi-1D electronic structure and the incipient anti-ferroelectric lattice distortion of the insulating oxide WO3, which represents the limit of this series when m→∞....
Through low-temperature X-ray diffraction study, we find that the lattice cell is distorted by the doping of Li, which favors the tetragonal structure in the low-temperature Peierls-like phase. We suggest that the lattice distortion caused by the Li-doping is responsible for the enhancement of...
(inset to Fig.1c). In this case there would be a symmetry breaking into short and long edges on the pyrochlore tetrahedra depending on the electron filling of the molecular orbital but the incomplete filling of thet2gmanifold provides a Jahn-Teller-like driving force for the distortion that ...
身份认证 全文购买 相似文献 参考文献 引证文献来源期刊 Physica Status Solidi 研究点推荐 one-dimensional peierls distortion transition metal trichalcogenide Electron diffraction 引用走势辅助模式 0 引用 文献可以批量引用啦~欢迎点我试用!
ad=1metaldevelopaperiodicdistortionofitsreticularstructure(Peierlsinstability).TheminimaarefoundsolvingtheEulero-Lagrangeequationsoftheenergybyacontractionmethod.1Mainresults1.1IntroductionIn1955Peierls[P]suggestedthatinaonedimensionalmetalitwouldbeenergeticallyfavorabletodevelopaperiodicdistortionofthelinearlatticewithperiod...
Peierls distortion is a pathway to enhance thermoelectric figure-of-merit ZT by employing natural nano-wire-like electronic and thermal transport. The phonon-softening, called Kohn anomaly, and Peierls lattice distortion decrease phonon energy and increase phonon scattering, respectively, result in ...
Unlike a ferroelectric state, in this model we do not observe complete charge localization even when the lattice distortion, associated with the polaronic excitation, becomes static.A. García Saravia Ortíz de MontellanoDepartamento de Física AplicadaJ. Mustre de León...
Spin-PeierlsWe investigate the role of the spin–lattice coupling in the antiferromagnetic molecular rings and the possible appearance of a dimerized phase. We argue that the Cu 8 might be a good candidate to observe such a phase.doi:10.1016/j.jmmm.2003.12.633L. Spanu...
In addition, a Monte Carlo simulation of the liquid structure taking into account the directional properties of the p bonds shows that Peierls-like distortion may occur in the absence of translational invariance. Such a model is consistent with the temperature increase of the electrical conductivity ...