Scanning tunneling spectroscopy of layers of superconducting 2H-TaSe$_\textbf{2}$: Evidence for a zero bias anomaly in single layers

We report a characterization of surfaces of the dichalcogenide TaSe $_{2}$ using scanning tunneling microscopy and spectroscopy (STM/S) at 150 mK. When the top layer has the 2H structure and the layer immediately below the 1T structure, we find a singular spatial dependence of the tunneling conductance below 1 K, changing from a zero bias peak on top of Se atoms to a gap in between Se atoms. The zero bias peak is additionally modulated by the commensurate $3a_0 \times 3a_0 $c h a r g e d e n s i t y w a v e o f 2 H - T a S e$ _2 $. M u l t i l a y e r s o f 2 H - T a S e$ _2$ show a spatially homogeneous superconducting gap with a critical temperature also of 1 K. We discuss possible origins for the peculiar tunneling conductance in single layers.

Scanning tunneling spectroscopy of layers of superconducting 2H-TaSe $_{2}$ : Evidence for a zero bias anomaly in single layers

文献摘要

讨论

讲解博客

AI智能校验

Scanning tunneling spectroscopy of layers of superconducting 2H-TaSe $_{2}$ : Evidence for a zero bias anomaly in single layers

文献摘要

讨论

讲解博客

AI智能校验

Scanning tunneling spectroscopy of layers of superconducting 2H-TaSe22​: Evidence for a zero bias anomaly in single layers

文献摘要

讨论

|讲解博客

|AI智能校验

Scanning tunneling spectroscopy of layers of superconducting 2H-TaSe22​: Evidence for a zero bias anomaly in single layers

文献摘要

讨论

|讲解博客

|AI智能校验

Scanning tunneling spectroscopy of layers of superconducting 2H-TaSe $_{2}$ : Evidence for a zero bias anomaly in single layers

讲解博客

AI智能校验

Scanning tunneling spectroscopy of layers of superconducting 2H-TaSe $_{2}$ : Evidence for a zero bias anomaly in single layers

讲解博客

AI智能校验