Abstract
We studied the superconducting transition temperature T C of β-(BEDT-TTF) 2I 3 in the high-T C phase under uniaxial strain. By embedding the crystal into epoxy resin, 8 K superconducting phase is stabilized. By applying uniaxial compression, further T C increase taking a maximum at a piston pressure of 3-4 kbar is observed for both directions parallel and perpendicular to the donor stack. The behavior is understood as a competition between the electron correlation (U dimer/W) and spin frustration (t'/t) in terms of the spin-fluctuation mediated superconductivity on the dimerized triangular lattice Hubbard model.
| Original language | English |
|---|---|
| Journal | Physica B: Condensed Matter |
| Volume | 405 |
| Issue number | 11 SUPPL. |
| DOIs | |
| Publication status | Published - Jun 1 2010 |
| Externally published | Yes |
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Keywords
- β-type BEDT-TTF salt
- Dimerization
- Spin frustration
- Superconductivity
- Uniaxial strain
ASJC Scopus subject areas
- Condensed Matter Physics
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering
Cite this
Superconductivity of β-type salts under uniaxial compression. / Ito, Hiroshi; Ishihara, Tetsuo; Niwa, Masafumi; Suzuki, Takeo; Onari, Seiichiro; Tanaka, Yukio; Yamada, Jun Ichi; Yamochi, Hideki; Saito, Gunzi.
In: Physica B: Condensed Matter, Vol. 405, No. 11 SUPPL., 01.06.2010.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Superconductivity of β-type salts under uniaxial compression
AU - Ito, Hiroshi
AU - Ishihara, Tetsuo
AU - Niwa, Masafumi
AU - Suzuki, Takeo
AU - Onari, Seiichiro
AU - Tanaka, Yukio
AU - Yamada, Jun Ichi
AU - Yamochi, Hideki
AU - Saito, Gunzi
PY - 2010/6/1
Y1 - 2010/6/1
N2 - We studied the superconducting transition temperature T C of β-(BEDT-TTF) 2I 3 in the high-T C phase under uniaxial strain. By embedding the crystal into epoxy resin, 8 K superconducting phase is stabilized. By applying uniaxial compression, further T C increase taking a maximum at a piston pressure of 3-4 kbar is observed for both directions parallel and perpendicular to the donor stack. The behavior is understood as a competition between the electron correlation (U dimer/W) and spin frustration (t'/t) in terms of the spin-fluctuation mediated superconductivity on the dimerized triangular lattice Hubbard model.
AB - We studied the superconducting transition temperature T C of β-(BEDT-TTF) 2I 3 in the high-T C phase under uniaxial strain. By embedding the crystal into epoxy resin, 8 K superconducting phase is stabilized. By applying uniaxial compression, further T C increase taking a maximum at a piston pressure of 3-4 kbar is observed for both directions parallel and perpendicular to the donor stack. The behavior is understood as a competition between the electron correlation (U dimer/W) and spin frustration (t'/t) in terms of the spin-fluctuation mediated superconductivity on the dimerized triangular lattice Hubbard model.
KW - β-type BEDT-TTF salt
KW - Dimerization
KW - Spin frustration
KW - Superconductivity
KW - Uniaxial strain
UR - http://www.scopus.com/inward/record.url?scp=79958051610&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79958051610&partnerID=8YFLogxK
U2 - 10.1016/j.physb.2009.12.073
DO - 10.1016/j.physb.2009.12.073
M3 - Article
AN - SCOPUS:79958051610
VL - 405
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
SN - 0921-4526
IS - 11 SUPPL.
ER -