Abstract
We theoretically discuss the mechanism for the peculiar nonlinear conduction in quasi-two-dimensional organic conductors θ-(BEDT-TTF) 2X [BEDT-TTF = bis(ethylenedithio)tetrathiafulvalene] through the melting of stripe-type charge order. An extended Peierls-Hubbard model attached to metallic electrodes is investigated by a nonequilibrium Green's function technique. A novel current-voltage characteristic appears in a coexistent state of stripe-type and nonstripe 3-fold charge orders, where the applied bias melts mainly the stripe-type charge order through the reduction of lattice distortion, whereas the 3-fold charge order survives. These contrastive responses of the two different charge orders are consistent with the experimental observations.
| Original language | English |
|---|---|
| Article number | 103702 |
| Journal | Journal of the Physical Society of Japan |
| Volume | 80 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 2011 Oct 1 |
| Externally published | Yes |
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Keywords
- Charge order
- Nonequilibrium Green's function
- Nonlinear conduction
- Organic conductor
ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Nonlinear conduction by melting of stripe-type charge order in organic conductors with triangular lattices. / Tanaka, Yasuhiro; Yonemitsu, Kenji.
In: Journal of the Physical Society of Japan, Vol. 80, No. 10, 103702, 01.10.2011.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Nonlinear conduction by melting of stripe-type charge order in organic conductors with triangular lattices
AU - Tanaka, Yasuhiro
AU - Yonemitsu, Kenji
PY - 2011/10/1
Y1 - 2011/10/1
N2 - We theoretically discuss the mechanism for the peculiar nonlinear conduction in quasi-two-dimensional organic conductors θ-(BEDT-TTF) 2X [BEDT-TTF = bis(ethylenedithio)tetrathiafulvalene] through the melting of stripe-type charge order. An extended Peierls-Hubbard model attached to metallic electrodes is investigated by a nonequilibrium Green's function technique. A novel current-voltage characteristic appears in a coexistent state of stripe-type and nonstripe 3-fold charge orders, where the applied bias melts mainly the stripe-type charge order through the reduction of lattice distortion, whereas the 3-fold charge order survives. These contrastive responses of the two different charge orders are consistent with the experimental observations.
AB - We theoretically discuss the mechanism for the peculiar nonlinear conduction in quasi-two-dimensional organic conductors θ-(BEDT-TTF) 2X [BEDT-TTF = bis(ethylenedithio)tetrathiafulvalene] through the melting of stripe-type charge order. An extended Peierls-Hubbard model attached to metallic electrodes is investigated by a nonequilibrium Green's function technique. A novel current-voltage characteristic appears in a coexistent state of stripe-type and nonstripe 3-fold charge orders, where the applied bias melts mainly the stripe-type charge order through the reduction of lattice distortion, whereas the 3-fold charge order survives. These contrastive responses of the two different charge orders are consistent with the experimental observations.
KW - Charge order
KW - Nonequilibrium Green's function
KW - Nonlinear conduction
KW - Organic conductor
UR - http://www.scopus.com/inward/record.url?scp=80053613516&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80053613516&partnerID=8YFLogxK
U2 - 10.1143/JPSJ.80.103702
DO - 10.1143/JPSJ.80.103702
M3 - Article
VL - 80
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 10
M1 - 103702
ER -