Variable electronic stripe structures of the parent iron-chalcogenide superconductor Fe1+dTe observed by STM-STS
Akira Sugimoto, Toshikazu Ekino, Alexander M. Gabovich
DOI 10.1103/PhysRevB.90.224503 · Physical Review B
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Abstract
Nanoscale stripe structures of the parent iron-11 superconductor Fe1.033Te were investigated using low-temperature scanning tunnel microscopy-scanning tunnel spectroscopy (STM-STS). STM topographies and dI/dV maps show clear stripe structures with the bias-dependent multiple periods 2×a0 and a0, where a0 is the lattice constant ∼0.38 nm. The form of the stripe structures seen on dI/dV maps strongly depends on the bias voltage. Varying stripe structures are apparently driven by magnetic order appearing below the transition temperature Ts∼72 K, that is defined by the noticeable drop in the temperature dependence of resistivity, and are strongly influenced by the underlying excess Fe.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Fe1.033Te Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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