TY - JOUR
T1 - Atomic limit and polarons in conducting molecular crystals
AU - Hoffman, B. M.
AU - Phillips, T. E.
AU - Soos, Z. G.
N1 - Funding Information:
Acknowledgement — We gratefully acknowledge support for this work at Northwestern University through the NSF Materials Research Laboratories Program (DMR 76—80847 AOl) and NSF—DMR77—26409 and at Princeton University through NSF—DMR— 7727418 AOl.
PY - 1980/1
Y1 - 1980/1
N2 - The macrocyclic donor, D = 1,4,5,8,9,12,13,16-octamethyltetrabenzporphinato nickel (II), forms two mixed-valence complexes D+γ (I-3)γ, with γ = 0.36 and 0.97, that combine high electric conductivity σ(T) with a nearly Curie-law magnetic susceptibility. These molecular conductors are the first clear realizations of the partly-filled (γ < 1) atomic limit of the Hubbard models, when the bandwidth 4|t| is small compared to on-site correlations U. Single crystal epr and σ(T) data on γ = 0.36 crystals are interpreted as correlated motion of localized D+ polarons on a one-dimensional ...D+γD+γ... stack.
AB - The macrocyclic donor, D = 1,4,5,8,9,12,13,16-octamethyltetrabenzporphinato nickel (II), forms two mixed-valence complexes D+γ (I-3)γ, with γ = 0.36 and 0.97, that combine high electric conductivity σ(T) with a nearly Curie-law magnetic susceptibility. These molecular conductors are the first clear realizations of the partly-filled (γ < 1) atomic limit of the Hubbard models, when the bandwidth 4|t| is small compared to on-site correlations U. Single crystal epr and σ(T) data on γ = 0.36 crystals are interpreted as correlated motion of localized D+ polarons on a one-dimensional ...D+γD+γ... stack.
UR - http://www.scopus.com/inward/record.url?scp=0018913944&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0018913944&partnerID=8YFLogxK
U2 - 10.1016/0038-1098(80)90694-8
DO - 10.1016/0038-1098(80)90694-8
M3 - Article
AN - SCOPUS:0018913944
SN - 0038-1098
VL - 33
SP - 51
EP - 54
JO - Solid State Communications
JF - Solid State Communications
IS - 1
ER -