Coexistence of magnetism and superconductivity in the iron-based compound Cs&lt;sub&gt;0.8&lt;/sub&gt;(FeSe&lt;sub&gt;0.98&lt;/sub&gt;)&lt;sub&gt;2&lt;/sub&gt;

Shermadini, Z.; Krzton-Maziopa, A.; Bendele, M.; Khasanov, R.; Luetkens, H.; Conder, K.; Pomjakushina, E.; Weyeneth, S.; Pomjakushin, V.; Bossen, O.; Amato, A.

doi:10.1103/PhysRevLett.106.117602

Coexistence of magnetism and superconductivity in the iron-based compound Cs_0.8(FeSe_0.98)₂

Shermadini Z, Krzton-Maziopa A, Bendele M, Khasanov R, Luetkens H, Conder K, Pomjakushina E, Weyeneth S, Pomjakushin V, Bossen O & Amato A

Citation

Shermadini, Z., Krzton-Maziopa, A., Bendele, M., Khasanov, R., Luetkens, H., Conder, K., … Amato, A. (2011). Coexistence of magnetism and superconductivity in the iron-based compound Cs_0.8(FeSe_0.98)₂. Physical Review Letters, 106(11), 117602 (4 pp.). https://doi.org/10.1103/PhysRevLett.106.117602

Persistent URL https://www.dora.lib4ri.ch/psi/islandora/object/psi:14018

We report on muon-spin rotation and relaxation (μSR), electrical resistivity, magnetization and differential scanning calorimetry measurements performed on a high-quality single crystal of Cs_0.8(FeSe _0.98)₂. Whereas our transport and magnetization data confirm the bulk character of the superconducting state below T_c=29.6(2)K, the μSR data indicate that the system is magnetic below T_N=478.5(3) K, where a first-order transition occurs. The first-order character of the magnetic transition is confirmed by differential scanning calorimetry data. Taken all together, these data indicate in Cs_0.8(FeSe_0.98)₂ a microscopic coexistence between the superconducting phase and a strong magnetic phase. The observed T_N is the highest reported to date for a magnetic superconductor.