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Superconductivity in the Ladder Material Sr<sub>0.4</sub>Ca<sub>13.6</sub>Cu<sub>24</sub>O<sub>41.84</sub>
Journal of the Physical Society of Japan · 1996 · Vol. 65(9) · pp. 2764–2767
M. Uehara✉(Aoyama Gakuin University)Takashi Nagata(Aoyama Gakuin University)Jun Akimitsu(Aoyama Gakuin University)Hiroki Takahashi(The University of Tokyo)Nobuo Môri(The University of Tokyo)Kyôichi Kinoshita(NTT (United States))
Abstract
We have observed superconductivity in the ladder material Sr 0.4 Ca 13.6 Cu 24 O 41.84 under pressures of 3 GPa and 4.5 GPa by means of electrical measurements. The superconducting transition temperatures T c (onset) are 12 K and 9 K at 3 and 4.5 GPa, respectively. The superconducting volume fraction was obtained to be about 5% from magnetization measurement under 3.5 GPa at 4.2 K, indicating the bulk nature of the superconductivity in this system.
Physics of Superconductivity and MagnetismAdvanced Condensed Matter PhysicsIron-based superconductors researchSuperconductivityCondensed matter physicsSuperconducting transition temperatureMaterials scienceMagnetizationElectrical resistivity and conductivityTransition temperaturePhysicsMagnetic field
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References
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