Charge-orbital density wave and superconductivity in the strong spin-orbit coupled IrTe2:Pd |
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Authors: | Yang J J Choi Y J Oh Y S Hogan A Horibe Y Kim K Min B I Cheong S-W |
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Institution: | Laboratory for Pohang Emergent Materials, Pohang University of Science and Technology, Pohang, Korea. |
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Abstract: | Using transmission electron microscopy, the anomalies in resistivity and magnetic susceptibility at ~262 K in IrTe2 are found to accompany the superlattice peaks with qover q=(1/5,0,-1/5). The wave vector is consistent with our theoretical calculation for the Fermi surface nesting vector, indicating that the ~262 K transition is of the charge-orbital density wave (DW) type. We also discovered that both Pd intercalation and substitution induce bulk superconductivity with T(c) up to ~3 K, which competes with DW in a quantum critical pointlike manner. |
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