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APS » Journals » Phys. Rev. Lett. » Volume 79 » Issue 21
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Phys. Rev. Lett. 79, 4274–4277 (1997)

Intrinsic EPR in La2-xSrxCuO4: Manifestation of Three-Spin Polarons

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B. I. Kochelaev, J. Sichelschmidt, and B. Elschner
Institut für Festkörperphysik, Technische Hochschule Darmstadt, 64289 Darmstadt, Germany

W. Lemor
Fachbereich Physik der Universität Osnabrück, 49069 Osnabrück, Germany

A. Loidl
Institut für Physik, Universität Augsburg, 86159 Augsburg, Germany

Received 22 May 1997; published in the issue dated 24 November 1997

Electron-paramagnetic resonance (EPR) measurements on La2-xSrxCuO4 provide experimental evidence of a three-spin polaron, consisting of two Cu2+ ions and one p hole. The symmetry properties and the peculiar temperature dependence of the g values of the EPR line indicate the presence of dynamical Jahn-Teller distortions and formation of a collective mode of polarons and surrounding strongly correlated Cu ions (bottlenecked regime).

© 1997 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.79.4274
DOI:
10.1103/PhysRevLett.79.4274
PACS:
76.30.Fc, 74.20.Mn, 74.72.Dn
 
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