2018 5th Global Conference on Polymer and Composite Materials | |
Gap features of layered iron-selenium-tellurium compound below and above the superconducting transition temperature by break-junction spectroscopy combined with STS | |
材料科学;化学 | |
Ekino, T.^1 ; Sugimoto, A.^1 ; Gabovich, A.M.^2 | |
Hiroshima University, Graduate School of Integrated Arts and Sciences, Higashi-Hiroshima | |
7398521, Japan^1 | |
Institute of Physics, National Academy of Sciences of Ukraine, Kyiv | |
03680, Ukraine^2 | |
关键词: Break junctions; Critical temperatures; Density waves; Electronic spectrum; Gap structures; High-Tc cuprates; Scanning tunnelling spectroscopy; Superconducting gaps; | |
Others : https://iopscience.iop.org/article/10.1088/1757-899X/369/1/012024/pdf DOI : 10.1088/1757-899X/369/1/012024 |
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学科分类:材料科学(综合) | |
来源: IOP | |
【 摘 要 】
We studied correlations between the superconducting gap features of Te-substituted FeSe observed by scanning tunnelling spectroscopy (STS) and break-junction tunnelling spectroscopy (BJTS). At bias voltages outside the superconducting gap-energy range, the broad gap structure exists, which becomes the normal-state gap above the critical temperature, Tc. Such behaviour is consistent with the model of the partially gapped density-wave superconductor involving both superconducting gaps and pseudogaps, which has been applied by us earlier to high-Tccuprates. The similarity suggests that the parent electronic spectrum features should have much in common for these classes of materials.
【 预 览 】
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Gap features of layered iron-selenium-tellurium compound below and above the superconducting transition temperature by break-junction spectroscopy combined with STS | 577KB | download |