Tunneling spectroscopy of field-induced superconductivity in molybdenum disulfide using top metal contacts
Field-induced superconductivity has been observed on the surfaces of various materials; however, the underlying mechanism of this two-dimensional superconductivity remains elusive. While tunneling spectroscopy measurements provide valuable insights into the microscopic nature of the superconducting...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2023-08-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0159952 |
| _version_ | 1797689613468303360 |
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| author | Yoshihiro Shimazu Kazuya Yamada Hiroki Kobayashi Rikuto Ishikawa Haruki Watanabe Takuro Shinchi Keisuke Yanai |
| author_facet | Yoshihiro Shimazu Kazuya Yamada Hiroki Kobayashi Rikuto Ishikawa Haruki Watanabe Takuro Shinchi Keisuke Yanai |
| author_sort | Yoshihiro Shimazu |
| collection | DOAJ |
| description | Field-induced superconductivity has been observed on the surfaces of various materials; however, the underlying mechanism of this two-dimensional superconductivity remains elusive. While tunneling spectroscopy measurements provide valuable insights into the microscopic nature of the superconducting state, there is a scarcity of tunneling spectroscopy measurements specifically focused on field-induced superconductivity when compared to transport measurements. In this study, we present a novel approach for tunneling spectroscopy using top metal contacts on field-induced superconducting MoS2. Our experimental findings, including the energy gap values, are consistent with those of a previous study conducted using a different device configuration. The observed energy-dependent density of states cannot be explained by the conventional BCS mechanism. We address the impact of inhomogeneity within the superconducting phase and discuss potential methods for its suppression. The proposed tunneling spectroscopy technique offers simplicity and ease of implementation, making it applicable for investigating other two-dimensional superconducting systems. |
| first_indexed | 2024-03-12T01:48:15Z |
| format | Article |
| id | doaj.art-52a649dc80814b21a9221db09c06369b |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-03-12T01:48:15Z |
| publishDate | 2023-08-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-52a649dc80814b21a9221db09c06369b2023-09-08T16:03:31ZengAIP Publishing LLCAIP Advances2158-32262023-08-01138085321085321-510.1063/5.0159952Tunneling spectroscopy of field-induced superconductivity in molybdenum disulfide using top metal contactsYoshihiro Shimazu0Kazuya Yamada1Hiroki Kobayashi2Rikuto Ishikawa3Haruki Watanabe4Takuro Shinchi5Keisuke Yanai6Department of Physics, Yokohama National University, Hodogaya 79-5, Yokohama 240-8501, JapanDepartment of Physics, Yokohama National University, Hodogaya 79-5, Yokohama 240-8501, JapanDepartment of Physics, Yokohama National University, Hodogaya 79-5, Yokohama 240-8501, JapanDepartment of Physics, Yokohama National University, Hodogaya 79-5, Yokohama 240-8501, JapanDepartment of Physics, Yokohama National University, Hodogaya 79-5, Yokohama 240-8501, JapanDepartment of Physics, Yokohama National University, Hodogaya 79-5, Yokohama 240-8501, JapanDepartment of Physics, Yokohama National University, Hodogaya 79-5, Yokohama 240-8501, JapanField-induced superconductivity has been observed on the surfaces of various materials; however, the underlying mechanism of this two-dimensional superconductivity remains elusive. While tunneling spectroscopy measurements provide valuable insights into the microscopic nature of the superconducting state, there is a scarcity of tunneling spectroscopy measurements specifically focused on field-induced superconductivity when compared to transport measurements. In this study, we present a novel approach for tunneling spectroscopy using top metal contacts on field-induced superconducting MoS2. Our experimental findings, including the energy gap values, are consistent with those of a previous study conducted using a different device configuration. The observed energy-dependent density of states cannot be explained by the conventional BCS mechanism. We address the impact of inhomogeneity within the superconducting phase and discuss potential methods for its suppression. The proposed tunneling spectroscopy technique offers simplicity and ease of implementation, making it applicable for investigating other two-dimensional superconducting systems.http://dx.doi.org/10.1063/5.0159952 |
| spellingShingle | Yoshihiro Shimazu Kazuya Yamada Hiroki Kobayashi Rikuto Ishikawa Haruki Watanabe Takuro Shinchi Keisuke Yanai Tunneling spectroscopy of field-induced superconductivity in molybdenum disulfide using top metal contacts AIP Advances |
| title | Tunneling spectroscopy of field-induced superconductivity in molybdenum disulfide using top metal contacts |
| title_full | Tunneling spectroscopy of field-induced superconductivity in molybdenum disulfide using top metal contacts |
| title_fullStr | Tunneling spectroscopy of field-induced superconductivity in molybdenum disulfide using top metal contacts |
| title_full_unstemmed | Tunneling spectroscopy of field-induced superconductivity in molybdenum disulfide using top metal contacts |
| title_short | Tunneling spectroscopy of field-induced superconductivity in molybdenum disulfide using top metal contacts |
| title_sort | tunneling spectroscopy of field induced superconductivity in molybdenum disulfide using top metal contacts |
| url | http://dx.doi.org/10.1063/5.0159952 |
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