TY - JOUR
T1 - Observation of superconductivity and anomalous electrical resistivity in single-crystal Ir3Te8
AU - Li, L.
AU - Qi, T. F.
AU - Lin, L. S.
AU - Wu, X. X.
AU - Zhang, X. T.
AU - Butrouna, K.
AU - Cao, V. S.
AU - Zhang, Y. H.
AU - Hu, Jiangping
AU - Yuan, S. J.
AU - Schlottmann, P.
AU - De Long, L. E.
AU - Cao, G.
PY - 2013/5/13
Y1 - 2013/5/13
N2 - We observe an unusual combination of normal and superconducting state properties without any signature of strong spin fluctuations in single-crystal Ir3Te8. The electrical resistivity does not saturate by 700 K but exhibits a low-resistivity ratio, and it exhibits two extended linear regimes (approximately 20-330 and 370-700 K) with the same slope, separated by a small hysteretic interval marking a strong first-order phase transition from cubic to rhombohedral lattice symmetry at TS = 350 K. The electronic heat-capacity coefficient (11mJmol-1K-2) is consistent with a net diamagnetic, rather than a Pauli paramagnetic, normal state that yields to superconductivity below a critical temperature TC = 1.8 K. The size of the heat-capacity jump near TC indicates bulk superconductivity.
AB - We observe an unusual combination of normal and superconducting state properties without any signature of strong spin fluctuations in single-crystal Ir3Te8. The electrical resistivity does not saturate by 700 K but exhibits a low-resistivity ratio, and it exhibits two extended linear regimes (approximately 20-330 and 370-700 K) with the same slope, separated by a small hysteretic interval marking a strong first-order phase transition from cubic to rhombohedral lattice symmetry at TS = 350 K. The electronic heat-capacity coefficient (11mJmol-1K-2) is consistent with a net diamagnetic, rather than a Pauli paramagnetic, normal state that yields to superconductivity below a critical temperature TC = 1.8 K. The size of the heat-capacity jump near TC indicates bulk superconductivity.
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U2 - 10.1103/PhysRevB.87.174510
DO - 10.1103/PhysRevB.87.174510
M3 - Article
AN - SCOPUS:84877904970
SN - 1098-0121
VL - 87
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 17
M1 - 174510
ER -