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A classification of spin frustration in molecular magnets from a physical study of large odd-numbered-metal, odd electron rings

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Title A classification of spin frustration in molecular magnets from a physical study of large odd-numbered-metal, odd electron rings
 
Creator BAKER, ML
TIMCO, GA
PILIGKOS, S
MATHIESON, JS
MUTKA, H
TUNA, F
KOZLOWSKI, P
ANTKOWIAK, M
GUIDI, T
GUPTA, T
RATH, H
WOOLFSON, RJ
KAMIENIARZ, G
PRITCHARD, RG
WEIHE, H
CRONIN, L
RAJARAMAN, G
COLLISON, D
MCINNES, EJL
WINPENNY, REP
 
Subject Chromium
inelastic neutron scattering
molecular magnetism
density functional theory
magnetic measurements
EXCHANGE COUPLING-CONSTANTS
GAUSSIAN-BASIS SETS
LANTHANIDE COMPLEXES
CLUSTER
MAGNETIZATION
WHEELS
STATES
 
Description The term "frustration" in the context of magnetism was originally used by P. W. Anderson and quickly adopted for application to the description of spin glasses and later to very special lattice types, such as the kagome. The original use of the term was to describe systems with competing antiferromagnetic interactions and is important in current condensed matter physics in areas such as the description of emergent magnetic monopoles in spin ice. Within molecular magnetism, at least two very different definitions of frustration are used. Here we report the synthesis and characterization of unusual nine-metal rings, using magnetic measurements and inelastic neutron scattering, supported by density functional theory calculations. These compounds show different electronic/magnetic structures caused by frustration, and the findings lead us to propose a classification for frustration within molecular magnets that encompasses and clarifies all previous definitions.
 
Publisher NATL ACAD SCIENCES
 
Date 2014-10-17T05:18:05Z
2014-10-17T05:18:05Z
2012
 
Type Article
 
Identifier PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 109(47)19113-19118
http://dx.doi.org/10.1073/pnas.1213127109
http://dspace.library.iitb.ac.in/jspui/handle/100/16047
 
Language en