| Conţinutul numărului revistei |
| Articolul precedent |
| Articolul urmator |
 |
 86 0 |
 SM ISO690:2012BORRAS-ALMENAR, Juan Jose, CORONADO, Eugenio, GEORGES, Roland, PALII, Andrew, TSUKERBLAT, Boris S.. Exchange-transfer in mixed-valence clusters with one migrating hole. In: Chemical Physics Letters, 1996, vol. 249, pp. 7-14. ISSN 0009-2614. DOI: https://doi.org/10.1016/0009-2614(95)01344-X |
| EXPORT metadate: Google Scholar Crossref CERIF DataCite Dublin Core |
  Chemical Physics Letters |
||||||
| Volumul 249 / 1996 / ISSN 0009-2614 /ISSNe 1873-4448 | ||||||
|
||||||
| DOI:https://doi.org/10.1016/0009-2614(95)01344-X | ||||||
| Pag. 7-14 | ||||||
|
||||||
 Descarcă PDF |
||||||
| Rezumat | ||||||
A new mechanism for exchange-transfer specific to hole-type mixed-valence clusters is proposed. The intermediate state in the second-order exchange-transfer process is achieved by the jump of the electron from the spin-core of the dn+1 ion into the empty orbital of the dn ion. As distinguished from the mixed-valence clusters with one delocalized electron this intermediate state is the high-spin one giving rise to a ferromagnetic contribution to the ground manifold. On the basis of angular momentum theory a general solution of the exchange-transfer problem is given for arbitrary nuclearity mixed-valence hole-type clusters with many-electron paramagnetic spin-cores. The interplay between the double exchange, exchange-transfer and Heisenberg exchange is considered in detail for the simple case of a d2-d2-d1 trimer. |
||||||
| Cuvinte-cheie Valence, Mixed Valence, Spintronics |
||||||
|
|
|
|
