Uniaxial-stress-induced superconductivity in organic conductors
C. E. Campos, J. S. Brooks, P. J. M. van Bentum, J. A. A. J. Perenboom, S. J. Klepper, P. S. Sandhu, S. Valfells, Y. Tanaka, T. Kinoshita, N. Kinoshita, M. Tokumoto, H. Anzai
DOI 10.1103/PhysRevB.52.R7014 · Physical Review B
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Abstract
We report an interesting effect in organic conductors and superconductors: the inducement and/or enhancement of superconductivity by uniaxial compressive stress. Uniaxial stress induces superconductivity in a density-wave material and increases the transition temperature of a superconductor by a factor of 3. Analysis of the Shubnikov–de Haas effect shows an expansion of the in-plane unit cell with stress and an increase in effective mass when superconductivity is induced.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| α-(BEDT-TTF)2KHg(SCN)4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.5 | 0.13 GPa | onset |
| α-(BEDT-TTF)2NH4Hg(SCN)4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1 | Pressure unresolved | unknown |
| α-(BEDT-TTF)2NH4Hg(SCN)4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 3 | 0.24 GPa | unknown |
| κ-(BEDT-TTF)2Cu[N(CN)2]Cl Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 12 | 0.03 GPa | unknown |
| κ-(BEDT-TTF)2Cu(NCS)2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 10.4 | Pressure unresolved | unknown |
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