Please use this identifier to cite or link to this item:
https://scholarbank.nus.edu.sg/handle/10635/156052
DC Field | Value | |
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dc.title | MOS2 FIELD-EFFECT TRANSISTORS WITH SUPERCONDUCTING SN CONTACTS | |
dc.contributor.author | CAO ZHONGHAN | |
dc.date.accessioned | 2019-07-01T18:03:37Z | |
dc.date.available | 2019-07-01T18:03:37Z | |
dc.date.issued | 2018-08-24 | |
dc.identifier.citation | CAO ZHONGHAN (2018-08-24). MOS2 FIELD-EFFECT TRANSISTORS WITH SUPERCONDUCTING SN CONTACTS. ScholarBank@NUS Repository. | |
dc.identifier.uri | https://scholarbank.nus.edu.sg/handle/10635/156052 | |
dc.description.abstract | Semiconductor MoS2 has attracted attention owing to its sizable energy band gap, significant spin-orbit coupling, and novel effects. However, the energy band gap usually gives rise to the formation of Schottky barriers at the interface to contact metal, which may render devices intended for quantum transport inapplicable at low temperature. We manifest that low temperature Ohmic contacts to mono- and few-layer MoS2 can be achieved with Tin (Sn). We propose a possible explanation: strain induced deformation of MoS2 imposed by Sn. Besides, we study the quantum transport in MoS2 benefited from the formation of transparent Sn contacts. We reveal that high bias can completely vanish weak localization, and multiple crossovers of weak localization and anti-localization which have never been reported. We discover quasi-particle tunneling and irregular resonant states in differential conductance. The characterizations demonstrate that they correlate to the superconductivity that is not from Sn but the superconducting MoS2. | |
dc.language.iso | en | |
dc.subject | MoS2, Field Effect Transistor, Schottky Barrier, Quantum Transport, Quasi-particle tunneling, Resonant States | |
dc.type | Thesis | |
dc.contributor.department | PHYSICS | |
dc.contributor.supervisor | JENS MARTIN | |
dc.description.degree | Ph.D | |
dc.description.degreeconferred | DOCTOR OF PHILOSOPHY | |
Appears in Collections: | Ph.D Theses (Open) |
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CaoZ.pdf | 31 MB | Adobe PDF | OPEN | None | View/Download |
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