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SM ISO690:2012 GERU, Ion. Kramers trimer clusters and time-reversal symmetry. Dusseldorf: 2018, pp. 143-154. ISSN ISSN:0081-3869; E-ISSN:1615-0430DOI: 10.1007/978-3-030-01210-6_4 |
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Springer Tracts in Modern Physics | ||||||
2018 | ||||||
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DOI:https://doi.org/10.1007/978-3-030-01210-6_4 | ||||||
Pag. 143-154 | ||||||
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In this chapter is shown that structural distortions of trihomonuclear Kramers clusters occur as a consequence of the time-reversal symmetry. These distortions are caused by the fact that the time-reversal operator T is not a separate element of the magnetic point group G', but forms a combined T element with other g elements of the original point group G. The order of the element g cannot be an odd number, otherwise it would lead to T G', which contradicts the definition of the group G'. Forbidden rotations by (forumala Presented). in the group G' lead to the fact that metal ions of homonuclear magnetic clusters in a magnetic ordered state cannot occupy the vertices of an equilateral triangle or those of a regular pentagon. The distortion of the regular triangle or pentagon occurs only if the time-reversal operator T is taken into account. Hence these structural distortions are due to the time-reversal symmetry. There are presented and discussed experimental data concerning the anomalous behavior of chromium(II), iron(III), copper(II), vanadium(II) and cobalt(II) trihomonuclear clusters determined by their four-color symmetry. |
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Cuvinte-cheie Single Molecule, Magnets, Ground state |
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