Published 2001 | Version v1
Journal article Metadata-only

Extraction of Fermi-surface topologies in layered manganites from spin-dependent positron annihilation

Creators

  • 1. Bristol Univ. (United Kingdom). H.H. Wills Physics Lab.

Description

The colossal magnetoresistive manganite La1.2Sr1.8Mn2O7 has been investigated using the 2D-ACAR method in order to obtain information about the Fermi surface. Conventional data analysis methods have been found to yield Fermi-surface topologies which significantly disagree with the size and shape obtained from theoretical band-structure calculations. We present a method for extracting the Fermi-surface topologies by combining spin-dependent 2D-ACAR measurements with maximum-likelihood fitting. (orig.)

Additional details

Publishing Information

Journal Title
Materials Science Forum
Journal Volume
363-365
Journal Page Range
p. 579-581
ISSN
0255-5476
CODEN
MSFOEP

Conference

Title
12. international conference on positron annihilation
Acronym
ICPA-12
Dates
6-12 Aug 2000
Place
Munich (Germany)

INIS

Country of Publication
Switzerland
Country of Input or Organization
Switzerland
INIS RN
32030930
Subject category
S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ANGULAR CORRELATION; ANNIHILATION; BAND THEORY; ELECTRONIC STRUCTURE; FERMI LEVEL; LANTHANUM COMPOUNDS; MAGNETORESISTANCE; MANGANATES; MAXIMUM-LIKELIHOOD FIT; POSITRONS; SPIN ORIENTATION; STRONTIUM COMPOUNDS; TOPOLOGY
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; ANTILEPTONS; ANTIMATTER; ANTIPARTICLES; CORRELATIONS; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; ELEMENTARY PARTICLES; ENERGY LEVELS; FERMIONS; INTERACTIONS; LEPTONS; MANGANESE COMPOUNDS; MATHEMATICS; MATTER; NUMERICAL SOLUTION; ORIENTATION; OXYGEN COMPOUNDS; PARTICLE INTERACTIONS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; TRANSITION ELEMENT COMPOUNDS

Optional Information

Notes
10 refs.