Published 1988
| Version v1
Journal article
NQR relaxation in superconducting 2D magnetic systems La2-xSrxCuO4-y
- 1. Istituto Nazionale di Fisica Nucleare, Pavia (Italy)
- 2. Pavia Univ. (Italy). Dipt. di Chimica Fisica
Description
Measurements of spin-spin relaxation time, T2, and spin-lattice relaxation, T1, have been performed on the 139La nucleus in the NQR regime in samples of the type La2-xSrxCuO4-y as a function of temperature and of composition (x and y). An anomalously fast relaxation has been evidence at high temperature for x∼0 and y∼0. Furthermore, a peak in T1-1 and T2-1 has been detected around 10 K which is strongly composition dependent. Various relaxation mechanisms are discussed also in view of the possible existence in these systems of peculiar excitations associated to a resonance valence bond state (RVB)
Additional details
Publishing Information
- Journal Title
- Vuoto, Scienza e Tecnologia
- Journal Volume
- 18
- Journal Issue
- 3
- Series
- Vuoto, Sci. Tecnol.
- Journal Page Range
- 292-295
- ISSN
- 0391-3155
- CODEN
- VSTCB
INIS
- Country of Publication
- Italy
- Country of Input or Organization
- Italy
- INIS RN
- 21004719
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- COPPER OXIDES; CRITICAL FIELD; ENERGY SPECTRA; LANTHANUM OXIDES; LANTHANUM 139; MEISSNER-OCHSENFELD EFFECT; NUCLEAR MAGNETIC RESONANCE; NUCLEAR QUADRUPOLE RESONANCE; SPIN-LATTICE RELAXATION; SPIN-SPIN RELAXATION; STRONTIUM OXIDES; SUPERCONDUCTIVITY; TRANSITION TEMPERATURE
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; INTERMEDIATE MASS NUCLEI; ISOTOPES; LANTHANUM COMPOUNDS; LANTHANUM ISOTOPES; MAGNETIC FIELDS; MAGNETIC RESONANCE; NUCLEI; ODD-EVEN NUCLEI; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; RARE EARTH NUCLEI; RELAXATION; RESONANCE; SPECTRA; STABLE ISOTOPES; STRONTIUM COMPOUNDS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS