Published September 1996
| Version v1
Journal article
Magnetic Excitations of the Doped-Hole State in Diamagnetic La2 Cu0.5Li0.5 O4
Creators
- 1. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
- 2. National High Magnetic Field Laboratory and Florida State University, Tallahassee, Florida 32306 (United States)
Description
Substitution of Li for Cu in La2Cu1-xLixO4 donates holes; at x=0.5 the Li ions form an ordered superlattice which isolates individual CuO4 plaquettes from one another, and the number of doped holes is sufficient that each plaquette is occupied. Above 170K, an activated temperature dependence of the Cu nuclear spin relaxation rate reveals a magnetic excitation of the doped-hole state with an energy of ∼130 meV. Below 170 K relaxation is primarily due to fluctuations of the electric field gradient; the temperature dependence of this rate is anomalously slow: T1-1∝√T. copyright 1996 The American Physical Society
Additional details
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 77
- Journal Issue
- 10
- Journal Page Range
- p. 2069-2072.
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 28007330
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- COPPER OXIDES; DIAMAGNETISM; DOPED MATERIALS; LANTHANUM OXIDES; LITHIUM OXIDES; NUCLEAR QUADRUPOLE RESONANCE; SPIN-SPIN RELAXATION; TEMPERATURE DEPENDENCE
- Descriptors DEC
- ALKALI METAL COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; LANTHANUM COMPOUNDS; LITHIUM COMPOUNDS; MAGNETISM; MATERIALS; OXIDES; OXYGEN COMPOUNDS; RARE EARTH COMPOUNDS; RELAXATION; RESONANCE; TRANSITION ELEMENT COMPOUNDS