TY - JOUR
T1 - Nonlinear electrical transport in λ-(BEDT-TSF)2FeCl4
AU - Toyota, Naoki
AU - Abe, Yasunori
AU - Matsui, Hiroshi
AU - Negishi, Eiichi
AU - Ishizaki, Yusuke
AU - Tsuchiya, Hideaki
AU - Uozaki, Hiroshi
AU - Endo, Satoshi
PY - 2002/7/15
Y1 - 2002/7/15
N2 - We study the current-voltage (I-V) characteristics in a quasi-two-dimensional, π-d coupled organic conductor λ-(BEDT-TSF)2FeCl4 which undergoes a metal-to-insulator transition associated with an antiferromagnetic ordering at TMI = 8.3 K. Drastic nonlinear transport phenomena are observed in the I-V curve, revealing a so-called negative resistance effect at an applied electric field or a current density higher than threshold ET or JT. The overall I-V curves are quite well explained phenomenologically by a nonlinear equation for a positive feedback system that the nonlinear conductivity proportional to Jn with n = 1.4(×0.1). This indicates that some carrier decondensation mechanism works in the present antiferromagnetic insulator. Discussions are presented by following quite similar nonlinear phenomena observed in a variety of quasi-one-dimensional, mixed-stack, and segregated-stack, organic insulators.
AB - We study the current-voltage (I-V) characteristics in a quasi-two-dimensional, π-d coupled organic conductor λ-(BEDT-TSF)2FeCl4 which undergoes a metal-to-insulator transition associated with an antiferromagnetic ordering at TMI = 8.3 K. Drastic nonlinear transport phenomena are observed in the I-V curve, revealing a so-called negative resistance effect at an applied electric field or a current density higher than threshold ET or JT. The overall I-V curves are quite well explained phenomenologically by a nonlinear equation for a positive feedback system that the nonlinear conductivity proportional to Jn with n = 1.4(×0.1). This indicates that some carrier decondensation mechanism works in the present antiferromagnetic insulator. Discussions are presented by following quite similar nonlinear phenomena observed in a variety of quasi-one-dimensional, mixed-stack, and segregated-stack, organic insulators.
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U2 - 10.1103/PhysRevB.66.033201
DO - 10.1103/PhysRevB.66.033201
M3 - Article
AN - SCOPUS:4243953445
SN - 0163-1829
VL - 66
SP - 332011
EP - 332014
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 3
M1 - 033201
ER -