Location of gap nodes in the organic superconductors kappa-(ET)(2)Cu(NCS)(2) and kappa-(ET)(2)Cu[N(CN)(2)]Br determined by magnetocalorimetry

Article

关键词: D-WAVE SUPERCONDUCTORS;    TEMPERATURE;    STATE;    HEAT;    KAPPA-(BEDT-TTF)(2)CU(NCS)(2);    CALORIMETRY;    FIELD;   

DOI  :  10.1103/PhysRevB.82.014522

来源: SCIE

【 摘 要 】

We report specific-heat measurements of the organic superconductors kappa-(ET)(2)Cu(NCS)(2) and kappa-(ET)(2)Cu[N(CN)(2)]Br. When the magnetic field is rotated in the highly conducting planes at low temperature (T similar or equal to 0.4 K), we observe clear oscillations of specific heat which have a strong fourfold component. The observed strong field and temperature dependence of this fourfold component identifies it as originating from nodes in the superconducting energy gap which point along the in-plane crystal axes (d(xy) symmetry).

【 授权许可】

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