Ir d-band derived superconductivity in the lanthanum-iridium system LaIr3 system
ORAL
Abstract
Here, we have reported the synthesis and characterization of LaIr3, which displays superconductivity below Tc = 3.3 K.
LaIr3 is a superconductor where the bands near the Fermi surface are dominated by Ir 5 d states that are strongly affected
by SOC. Thus, it is one of the few examples of a lanthanide-based superconductor where 5 d electrons play the dominant
role in the superconductivity. The superconducting parameters obtained from physical properties measurements of LaIr3 suggest
that it is a weakly-coupled BCS-type superconductor. These results motivate future work focused on exploring
intermetallic Ir-based superconductors that form in noncentrosymmetric structure types. Strong SOC in these systems
would then be antisymmetric, which often leads to exotic and unconventional superconductivity.
LaIr3 is a superconductor where the bands near the Fermi surface are dominated by Ir 5 d states that are strongly affected
by SOC. Thus, it is one of the few examples of a lanthanide-based superconductor where 5 d electrons play the dominant
role in the superconductivity. The superconducting parameters obtained from physical properties measurements of LaIr3 suggest
that it is a weakly-coupled BCS-type superconductor. These results motivate future work focused on exploring
intermetallic Ir-based superconductors that form in noncentrosymmetric structure types. Strong SOC in these systems
would then be antisymmetric, which often leads to exotic and unconventional superconductivity.
*DPY acknowledges support from the NSF through Grant No. DMR-1306392.
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Presenters
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Neel Haldolaarachchige
- Physical Sciences, Bergen Community College
- Bergen Community College