TY - JOUR
T1 - Nonlinear transport phenomena in highly one-dimensional M III(Pc)(CN)2 chains with π-d interaction (M = Co and Fe and Pc = phthalocyaninato)
AU - Ishikawa, Manabu
AU - Yamashita, Satoshi
AU - Naito, Toshio
AU - Matsuda, Masaki
AU - Tajima, Hiroyuki
AU - Hanasaki, Noriaki
AU - Akutagawa, Tomoyuki
AU - Nakamura, Takayoshi
AU - Inabe, Tamotsu
PY - 2009/10
Y1 - 2009/10
N2 - The charge transport properties of a partially oxidized salt composed of Co(Pc)(CN)2 units with a typical one-dimensional electronic system have been suggested to be determined by charge disproportionation. The current-voltage (I-V) characteristics show nonlinear behavior at low temperature, which is suppressed by applying pressure. The observed nonlinearity is considered to result from the electric-field-induced delocalization of carriers in the charge disproportionation state. In the isomorphous magnetic Fe(Pc)(CN) 2 system, the nonlinear behavior is observed at higher temperatures, suggesting that charge disproportionation is more developed in a system with local moments. The threshold voltage of negative differential resistance decreases when an external magnetic field is applied, confirming that the localization of charge carriers is released by magnetic field application.
AB - The charge transport properties of a partially oxidized salt composed of Co(Pc)(CN)2 units with a typical one-dimensional electronic system have been suggested to be determined by charge disproportionation. The current-voltage (I-V) characteristics show nonlinear behavior at low temperature, which is suppressed by applying pressure. The observed nonlinearity is considered to result from the electric-field-induced delocalization of carriers in the charge disproportionation state. In the isomorphous magnetic Fe(Pc)(CN) 2 system, the nonlinear behavior is observed at higher temperatures, suggesting that charge disproportionation is more developed in a system with local moments. The threshold voltage of negative differential resistance decreases when an external magnetic field is applied, confirming that the localization of charge carriers is released by magnetic field application.
KW - Charge disproportionation
KW - Local magnetic moment
KW - Nonlinear conductivity
KW - One-dimensional conductor
KW - Phthalocyanine (pc)
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U2 - 10.1143/JPSJ.78.104709
DO - 10.1143/JPSJ.78.104709
M3 - Article
AN - SCOPUS:70349658728
SN - 0031-9015
VL - 78
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
IS - 10
M1 - 104709
ER -