论文标题

肖特基(Schottky)忘记了伊辛(Ising)模型

Schottky's forgotten step to the Ising model

论文作者

Folk, Reinhard, Holovatch, Yurij

论文摘要

自然科学和后来的一个长期存在的问题是,在加热到高温下的加热下,对铁磁的存在及其消失的理解。尽管Curie-Weiss理论可以进行定性描述,但很明显,要解释基本磁子在低温下偏爱平行排序的趋势所必需的微观模型。 W. Schottky在旧的Bohr-Sommerfeld量子力学中提出了这样的模型,并声称解释了某些铁磁体的居里温度的高值。基于这个想法,伊辛为固体中的铁磁性制定了新的模型。同时,旧的量子力学被海森伯格和施罗丁的新概念和旋转的发现所取代。因此,肖特基的想法表现出色,最终在1928年被海森伯格的交流互动取代。这导致保利在1930年的索尔维会议上对伊辛的模型进行了重新制定。但是,人们可能认为肖特基的思想是这一发展的先驱,这解释了要点的重点是库仑的能量是导致邻近基本磁铁的基本互动的库仑能量。

A longstanding problem in natural science and later in physics was the understanding of the existence of ferromagnetism and its disappearance under heating to high temperatures. Although a qualitative description was possible by the Curie-Weiss theory it was obvious that a microscopic model was necessary to explain the tendency of the elementary magnetons to prefer parallel ordering at low temperatures. Such a model was proposed in 1922 by W. Schottky within the old Bohr-Sommerfeld quantum mechanics and claimed to explain the high values of the Curie temperatures of certain ferromagnets. Based on this idea Ising formulated a new model for ferromagnetism in solids. Simultaneously the old quantum mechanics was replaced by new concepts of Heisenberg and Schrödinger and the discovery of spin. Thus Schottky's idea was outperformed and finally replaced in 1928 by Heisenberg exchange interaction. This led to a reformulation of Ising's model by Pauli at the Solvay conference in 1930. Nevertheless one might consider Schottky's idea as a forerunner of this development explaining and asserting that the main point is the Coulomb energy leading to the essential interaction of neighboring elementary magnets.

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