Two-electron exchange between adjacent oxygen atoms as a possible origin of the pairing in layered cuprates
Identifieur interne : 001D83 ( Main/Exploration ); précédent : 001D82; suivant : 001D84Two-electron exchange between adjacent oxygen atoms as a possible origin of the pairing in layered cuprates
Auteurs : Todor Mishonov [Bulgarie] ; Atanas Groshev [Bulgarie, Allemagne]Source :
- Physica B: Physics of Condensed Matter [ 0921-4526 ] ; 1994.
English descriptors
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Abstract
Abstract: We consider the two-electron exchange tunneling between the two adjacent oxygen atoms forming right angle (O(1)-O(2)) around a Cu corner in the conducting CuO2 plane. This exchange lowers the energy of the electrons. We interpret it as a BCS attraction that gives rise to pairing in layered cuprates. The model provides a natural explanation of the twining plane superconductivity and the dependence of the critical temperature on the carrier concentration. A universal behavior of the Ginzburg-Landau parameter is predicted, which can be easily checked on already existing high-Tc field-effect transistors.
Url:
DOI: 10.1016/0921-4526(94)91213-0
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This exchange lowers the energy of the electrons. We interpret it as a BCS attraction that gives rise to pairing in layered cuprates. The model provides a natural explanation of the twining plane superconductivity and the dependence of the critical temperature on the carrier concentration. A universal behavior of the Ginzburg-Landau parameter is predicted, which can be easily checked on already existing high-Tc field-effect transistors.</div></front></TEI><affiliations><list><country><li>Allemagne</li><li>Bulgarie</li></country><region><li>Bade-Wurtemberg</li><li>District de Karlsruhe</li><li>Sofia-ville (oblast)</li></region><settlement><li>Karlsruhe</li><li>Sofia</li></settlement></list><tree><country name="Bulgarie"><region name="Sofia-ville (oblast)"><name sortKey="Mishonov, Todor" sort="Mishonov, Todor" uniqKey="Mishonov T" first="Todor" last="Mishonov">Todor Mishonov</name></region><name sortKey="Groshev, Atanas" sort="Groshev, Atanas" uniqKey="Groshev A" first="Atanas" last="Groshev">Atanas Groshev</name></country><country name="Allemagne"><region name="Bade-Wurtemberg"><name sortKey="Groshev, Atanas" sort="Groshev, Atanas" uniqKey="Groshev A" first="Atanas" last="Groshev">Atanas Groshev</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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