Abstract
Low-temperature electronic properties of the first all-organic donor-acceptor-type superconducting system, (BETS)2(X2TCNQ) [X=Cl, Br] under high pressure have been investigated by means of resistivity and 1H NMR experiments. The crystal structure of this class of complexes is characterized by a twin-columnar structure of BETS without intra-columnar dimerization at room temperature. Pressure-temperature phase diagrams are established for these compounds, where the electronic ground states are spin-density-wave (SDW's) insulators, except a narrow region of superconducting state in (BETS)2(Cl2TCNQ). A possible unified picture of the electronic states of the title compounds is discussed in terms of hydrostatic pressure effects and chemical substitution ones on them.
| Original language | English |
|---|---|
| Pages (from-to) | 3023-3030 |
| Number of pages | 8 |
| Journal | Journal of the Physical Society of Japan |
| Volume | 70 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - Oct 2001 |
| Externally published | Yes |
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Keywords
- Metal-insulator transition
- Organic superconductor
- Superconducting transition
ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Superconductivity and metal-insulator transition in twin-columnar organic superconductor, (BETS)2(X2TCNQ)[X=Cl, Br]. / Kondo, Ryusuke; Hasegawa, Tatsuo; Mochida, Tomoyuki; Kagoshima, Seiichi; Iwasa, Yoshihiro; Hiraki, Ko Ichi; Takahashi, Toshihiro.
In: Journal of the Physical Society of Japan, Vol. 70, No. 10, 10.2001, p. 3023-3030.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Superconductivity and metal-insulator transition in twin-columnar organic superconductor, (BETS)2(X2TCNQ)[X=Cl, Br]
AU - Kondo, Ryusuke
AU - Hasegawa, Tatsuo
AU - Mochida, Tomoyuki
AU - Kagoshima, Seiichi
AU - Iwasa, Yoshihiro
AU - Hiraki, Ko Ichi
AU - Takahashi, Toshihiro
PY - 2001/10
Y1 - 2001/10
N2 - Low-temperature electronic properties of the first all-organic donor-acceptor-type superconducting system, (BETS)2(X2TCNQ) [X=Cl, Br] under high pressure have been investigated by means of resistivity and 1H NMR experiments. The crystal structure of this class of complexes is characterized by a twin-columnar structure of BETS without intra-columnar dimerization at room temperature. Pressure-temperature phase diagrams are established for these compounds, where the electronic ground states are spin-density-wave (SDW's) insulators, except a narrow region of superconducting state in (BETS)2(Cl2TCNQ). A possible unified picture of the electronic states of the title compounds is discussed in terms of hydrostatic pressure effects and chemical substitution ones on them.
AB - Low-temperature electronic properties of the first all-organic donor-acceptor-type superconducting system, (BETS)2(X2TCNQ) [X=Cl, Br] under high pressure have been investigated by means of resistivity and 1H NMR experiments. The crystal structure of this class of complexes is characterized by a twin-columnar structure of BETS without intra-columnar dimerization at room temperature. Pressure-temperature phase diagrams are established for these compounds, where the electronic ground states are spin-density-wave (SDW's) insulators, except a narrow region of superconducting state in (BETS)2(Cl2TCNQ). A possible unified picture of the electronic states of the title compounds is discussed in terms of hydrostatic pressure effects and chemical substitution ones on them.
KW - Metal-insulator transition
KW - Organic superconductor
KW - Superconducting transition
UR - http://www.scopus.com/inward/record.url?scp=0035632870&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0035632870&partnerID=8YFLogxK
U2 - 10.1143/JPSJ.70.3023
DO - 10.1143/JPSJ.70.3023
M3 - Article
AN - SCOPUS:0035632870
VL - 70
SP - 3023
EP - 3030
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 10
ER -