Published March 2008 | Version v1
Journal article Metadata-only

Precise measurements of the dynamics of local fields in the underdoped regime of La2-xSrxCuO4 by μSR

Creators

  • 1. RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan)
  • 2. Department of Applied Physics, Tohoku University, 6-6-05 Aoba, Aramaki, Sendai 980-8579 (Japan)
  • 3. Physics Department, University of California, Riverside, Riverside, CA92521 (United States)

Description

Precise zero-field (ZF) and longitudinal-field (LF) muon spin relaxation (μSR) measurements have been carried out on La2-xSrxCuO4 in the underdoped regime of 0.024 ≤ x ≤ 0.15 to investigate the dynamics of local fields in the normal state. ZF-μSR time spectra show the Gaussian shape, indicating that muon spins depolarize mainly by nuclear dipole fields which are randomly distributed at the muon site. A slight deviation of the shape of the ZF-μSR time spectrum from the Gaussian shape has been observed with decreasing temperature. This deviation is due to a change of the dynamic depolarization rate of the muon-spin polarization. From LF-μSR measurements, it has been found that a small and quasi-static local field exists at the muon site even in the normal state around 100 K. The change of the muon-spin depolarization rate observed in ZF is due to a change of the magnitude of the small and quasi-static local field at the muon site

Availability note (English)

Available from http://dx.doi.org/10.1088/1742-6596/108/1/012004

Additional details

Identifiers

DOI
10.1088/1742-6596/108/1/012004;

Publishing Information

Journal Title
Journal of Physics. Conference Series (Online)
Journal Volume
108
Journal Issue
1
Journal Page Range
[5 p.]
ISSN
1742-6596

Conference

Title
International symposium on lattice effects in cuprate high temperature superconductors
Acronym
LEHTSCH2007
Dates
31 Oct - 3 Nov 2007
Place
Tsukuba (Japan)

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
40024556
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
CONCENTRATION RATIO; DEPOLARIZATION; DIPOLES; HIGH-TC SUPERCONDUCTORS; LANTHANUM COMPOUNDS; MUON SPIN RELAXATION; MUONS; SPECTRA; SPIN; SPIN ORIENTATION; STRONTIUM COMPOUNDS; TEMPERATURE DEPENDENCE
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; ANGULAR MOMENTUM; DIMENSIONLESS NUMBERS; ELEMENTARY PARTICLES; FERMIONS; LEPTONS; MULTIPOLES; ORIENTATION; PARTICLE PROPERTIES; RARE EARTH COMPOUNDS; RELAXATION; SUPERCONDUCTORS; TYPE-II SUPERCONDUCTORS