TY - JOUR
T1 - 2kF transitions in a series of (DMET)2(X1X2Tchq)(X1, X2 = Br, Cl, F, CH3, H)
T2 - Subsidiary lattice effect by anion radicals
AU - Sato, T.
AU - Hasegawa, T.
AU - Akutagawa, T.
AU - Nakamura, T.
AU - Kondo, R.
PY - 2004/2/13
Y1 - 2004/2/13
N2 - Structural and magnetic properties were investigated in a series of isomorphous 2:1 donor-acceptor-type organic charge-transfer (CT) complexes of (DMET)2(X1X2TCNQ) [DMET denotes dimethyl(ethylenedithio)diselenadithiafulvalene, TCNQ denotes tetracyanoquinodimethane, X1, X2 = Br, Cl, F, CH3, H]. In these complexes, donors (D’s) formed quasi-one-dimensional (Q1D) molecular stacks(D = +1/2), which were bridged with each other, by acceptor molecules whose molecular planes were parallel to the stacking axes. By the magnetic measurements, we found that the compounds could be classified into two groups in terms of the 2kF transitions of the donor stacks: two complexes exhibited the transitions at around room temperature, while the other two at lower temperature below 10 K. We discuss the origin of the difference in the observed 2kF transitions in terms of the subsidiary lattice effect by the acceptor molecules on the Q1D donor stacks.
AB - Structural and magnetic properties were investigated in a series of isomorphous 2:1 donor-acceptor-type organic charge-transfer (CT) complexes of (DMET)2(X1X2TCNQ) [DMET denotes dimethyl(ethylenedithio)diselenadithiafulvalene, TCNQ denotes tetracyanoquinodimethane, X1, X2 = Br, Cl, F, CH3, H]. In these complexes, donors (D’s) formed quasi-one-dimensional (Q1D) molecular stacks(D = +1/2), which were bridged with each other, by acceptor molecules whose molecular planes were parallel to the stacking axes. By the magnetic measurements, we found that the compounds could be classified into two groups in terms of the 2kF transitions of the donor stacks: two complexes exhibited the transitions at around room temperature, while the other two at lower temperature below 10 K. We discuss the origin of the difference in the observed 2kF transitions in terms of the subsidiary lattice effect by the acceptor molecules on the Q1D donor stacks.
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U2 - 10.1103/PhysRevB.69.075103
DO - 10.1103/PhysRevB.69.075103
M3 - Article
AN - SCOPUS:85038980903
SN - 1098-0121
VL - 69
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 7
ER -