Thickness Dependence of Superconductivity in Layered Topological Superconductor <i>β</i>-PdBi<sub>2</sub>
We report a systematic study on the thickness-dependent superconductivity and transport properties in exfoliated layered topological superconductor <i>β</i>-PdBi<sub>2</sub>. The superconducting transition temperature <i>T</i><sub>c</sub> is found to d...
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| Autores principales: | , , , , , , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
MDPI AG
2021
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/fbe54e69736641268fdcb73cb1475a23 |
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| Sumario: | We report a systematic study on the thickness-dependent superconductivity and transport properties in exfoliated layered topological superconductor <i>β</i>-PdBi<sub>2</sub>. The superconducting transition temperature <i>T</i><sub>c</sub> is found to decrease with the decreasing thickness. Below a critical thickness of 45 nm, the superconductivity is suppressed, but followed by an abrupt resistance jump near <i>T</i><sub>c</sub>, which is in opposite to the behavior in a superconductor. We attribute suppressed <i>T</i><sub>c</sub> to the enhanced disorder as the thickness decreases. The possible physical mechanisms were discussed for the origination of sharply increased resistance in thinner <i>β</i>-PdBi<sub>2</sub> samples. |
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