paltry
发表于 2025-3-27 00:41:56
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MERIT
发表于 2025-3-27 04:09:28
,‘Double Effect’ or Practical Wisdom?,However, as de Wolff explained already (ref.l), it is possible to extend the notion of symmetry. Our approach differs somehow from his and originates from a study of the space-time symmetry of vibrating crystals. The symmetry of a vibration mode is, in general, irrelevant, unless this mode plays a p
Ferritin
发表于 2025-3-27 09:04:08
Elsa G. Baumeister,Andrea V. Pontorieroural instability emerged. Shull. in neutron diffraction work, and Batterman and Barrett in more extensive x-ray studies found that V.Si underwent a structural transformation at temperatures not far above the superconducting T. (T. ≈ 17K). The transition from cubic to tetragonal structure shown by th
Granular
发表于 2025-3-27 10:53:17
Sahar Qazi,Ayesha Khanam,Khalid Razaitic transition and superconductivity. Labbe and Friedel. proposed that the martensitic transition is driven by an electronic band Jahn-Teller effect. Gorkov. proposed an alternative model in which the martensitic transition is driven by the Peierls mechanism of an energy gap opening up near the Fer
Aesthete
发表于 2025-3-27 16:31:38
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CARK
发表于 2025-3-27 19:14:48
Seksak Chouichom,Lawrence M. Liaoms, Jahn-Teller systems and order-disorder and tunnelling ferroelectrics. Models for these systems are introduced, and their static and dynamical properties developed and compared to experiment. Mixed and diluted systems, and some aspects of the central peak problem and of critical behaviour are als
synchronous
发表于 2025-3-27 22:32:58
https://doi.org/10.1007/978-1-4615-5965-8tabilizing effect on the ionic configuration: Jahn-Teller (JT) effect. This provides a mechanism for structural phase transitions in crystals which would be stable in the absence of electron-ion interaction. We give an introduction into the theory of such JT-induced transitions, with particular emph
斜
发表于 2025-3-28 02:44:43
Non Linear Models for Speech Melodythe critical enhancement of the local JT-effect caused by the vibronic coupling to the soft mode of a structural phase transition of the host crystal. Furthermore, we study the temperature-dependence of the strain field around the JT-centre induced by the local JT-effect.
Vertical
发表于 2025-3-28 10:04:36
Rational Decision: A Matter of Common Sense secondly, rare-earth crystals showing simple cooperative Jahn-Teller (CJT) phase transitions; and finally, examples of more complicated cooperative effects. For each of these systems the low lying electronic and vibrational excitations interact strongly and the coupled modes are of fundamental impo
fiscal
发表于 2025-3-28 12:56:33
Nonadversary Problem Solving by Machine,(JT) phase transitions. A number of interesting results have already been obtained, some of which will be described below. They include the identification of novel JT behaviour in PrCl. and some of its isomorphs., and the observation of interesting dielectric anomalies in previously studied JT syste