The two-dimensional hole gas in TiDx/STO heterostructures
Since the discovery of the 2DEG at LaAlO3/SrTiO3 heterointerface, oxide/oxide heterostructures have been studied extensively. However, there are only a few studies about the transport properties of metal/oxide heterostructures. In this thesis, I report that a 2DHG is found in the TiDx/STO heterostru...
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| Format: | Final Year Project |
| Language: | English |
| Published: |
2019
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| Online Access: | http://hdl.handle.net/10356/77056 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | Since the discovery of the 2DEG at LaAlO3/SrTiO3 heterointerface, oxide/oxide heterostructures have been studied extensively. However, there are only a few studies about the transport properties of metal/oxide heterostructures. In this thesis, I report that a 2DHG is found in the TiDx/STO heterostructures at temperature below 30 K. This 2DHG coexists with the 2DEG existed at room temperature. Remarkably, excessive deuterium doping in TiDx/STO heterostructure vanishes the 2DHG as well as no deuterium doping. Moreover, I also found that the 2DHG is not present in the TiDx/YSZ heterostructure. This result suggests that the 2DHG is dependent on the STO substrate and is not a novel electrical property of TiDx alone. |
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