Intrinsic EPR in La{sub 2{minus}x}Sr{sub x}CuO{sub 4} : Manifestation of Three-Spin Polarons

Journal Article · Sat Nov 01 04:00:00 EST 1997 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.79.4274· OSTI ID:553143

Kochelaev, B I; Sichelschmidt, J; Elschner, B ^[1]; Lemor, W ^[2]; Loidl, A ^[3]

---

1. Institut fuer Festkoerperphysik, Technische Hochschule Darmstadt, 64289 Darmstadt (Germany)
2. Fachbereich Physik der Universitaet Osnabrueck, 49069 Osnabrueck (Germany)
3. Institut fuer Physik, Universitaet Augsburg, 86159 Augsburg (Germany)

Electron-paramagnetic resonance (EPR) measurements on La{sub 2{minus}x}Sr {sub x}CuO{sub 4} provide experimental evidence of a three-spin polaron, consisting of two Cu{sup 2+} 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). {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 553143
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 21 Vol. 79; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COPPER OXIDES
ELECTRON SPIN RESONANCE
JAHN-TELLER EFFECT
LANTHANUM OXIDES
LINE WIDTHS
POLARONS
STRONTIUM OXIDES
TEMPERATURE DEPENDENCE