Spin dynamics in the low-temperature tetragonal phase of congruent with ( 1/ 8 ) doped single crystal La{sub 1.67}Eu{sub 0.2}Sr{sub 0.13}CuO{sub 4}

Journal Article · Sat Apr 01 04:00:00 EST 2000 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PhysRevB.61.R9265· OSTI ID:20215846

Suh, B J ^[1]; Hammel, P C ^[1]; Huecker, M ^[2]; Buechner, B ^[2]; Ammerahl, U ^[2]; Revcolevschi, A ^[3]

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1. Condensed Matter and Thermal Physics, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
2. II. Physikalisches Institut, Universitaet zu Koeln, D-50937 Koeln, (Germany)
3. Laboratoire de Chimie des Solides, Universite Paris-Sud, 91405 Orsay Cedex, (France)

We present {sup 139}La and {sup 63}Cu NMR relaxation measurements in single crystal La{sub 1.67}Eu{sub 0.2}Sr{sub 0.13}CuO{sub 4}. A strong peak in the {sup 139}La spin-lattice relaxation rate observed in the spin ordered state is well described by the BPP mechanism [Bloembergen, Purcell, and Pound, Phys. Rev. 73, 679 (1948)] and arises from continuous slowing of electronic spin fluctuations with decreasing temperature; these spin fluctuations exhibit XY-like anisotropy in the ordered state. The spin pseudogap is significantly enhanced by the static charge-stripe order in the LTT phase. (c) 2000 The American Physical Society.

• OSTI ID: 20215846
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 14 Vol. 61; ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COPPER 63
COPPER OXIDES
EUROPIUM OXIDES
EXPERIMENTAL DATA
FLUCTUATIONS
HIGH-TC SUPERCONDUCTORS
LANTHANUM OXIDES
NMR SPECTRA
SPIN
SPIN WAVES
SPIN-LATTICE RELAXATION
STRONTIUM OXIDES
THEORETICAL DATA