INTRINSIC EPR IN LA2-XSRXCUO4 - MANIFESTATION OF 3-SPIN POLARONS

Authors
KOCHELAEV BI SICHELSCHMIDT J ELSCHNER B LEMOR W LOIDL A
Citation
Bi. Kochelaev et al., INTRINSIC EPR IN LA2-XSRXCUO4 - MANIFESTATION OF 3-SPIN POLARONS, Physical review letters, 79(21), 1997, pp. 4274-4277
Citations number
17
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
79
Issue
21
Year of publication
1997
Pages
4274 - 4277
Database
ISI
SICI code
0031-9007(1997)79:21<4274:IEIL-M>2.0.ZU;2-I
Abstract
Electron-paramagnetic resonance (EPR) measurements on La2-xSrxCuO4 pro vide experimental evidence of a three-spin polaron, consisting of two CU2+ ions and one p hole. The symmetry properties and the peculiar tem perature dependence of the g values of the EPR line indicate the prese nce of dynamical Jahn-Teller distortions and formation of a collective mode of polarons and surrounding strongly correlated Cu ions (bottlen ecked regime).