Emergent superconductivity in low dimensions
Low-dimensional systems provide the opportunity to explore the relationship between electronic correlations, dimensionality, inhomogeneities, and superconductivity. In this work, single crystals of the quasi-one-dimensional Na2_0Mo6Se6 are studied, composed of MoSe filaments weakly coupled by Na ato...
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| Fformat: | Traethawd Ymchwil |
| Iaith: | English |
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2018
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| Mynediad Ar-lein: | http://hdl.handle.net/10356/73274 |
| _version_ | 1826119832092803072 |
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| author | Ansermet, Diane |
| author2 | Christos Panagopoulos |
| author_facet | Christos Panagopoulos Ansermet, Diane |
| author_sort | Ansermet, Diane |
| collection | NTU |
| description | Low-dimensional systems provide the opportunity to explore the relationship between electronic correlations, dimensionality, inhomogeneities, and superconductivity. In this work, single crystals of the quasi-one-dimensional Na2_0Mo6Se6 are studied, composed of MoSe filaments weakly coupled by Na atoms and subject to intrinsic disorder (6 > 0). Naz_0Mo6Se6 is demonstrated to display strong electronic correlations in its normal state, whereas a superconducting ground state emerges from Anderson localized electrons. Two novel behaviors of the superconducting state are observed: first , a disorderinduced enhancement of the superconducting transition temperature; second, a reentrant phase coherence with increasing temperature, magnetic field , and current. The intrinsic properties of Na2_0Mo6Se6 are analyzed to offer a thorough understanding of these phenomena. The emergence of superconductivity in such low-dimensional systems provides a fruitful playground to explore electronic order and correlations. |
| first_indexed | 2024-10-01T05:06:34Z |
| format | Thesis |
| id | ntu-10356/73274 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:06:34Z |
| publishDate | 2018 |
| record_format | dspace |
| spelling | ntu-10356/732742023-02-28T23:43:59Z Emergent superconductivity in low dimensions Ansermet, Diane Christos Panagopoulos School of Physical and Mathematical Sciences DRNTU::Science::Physics Low-dimensional systems provide the opportunity to explore the relationship between electronic correlations, dimensionality, inhomogeneities, and superconductivity. In this work, single crystals of the quasi-one-dimensional Na2_0Mo6Se6 are studied, composed of MoSe filaments weakly coupled by Na atoms and subject to intrinsic disorder (6 > 0). Naz_0Mo6Se6 is demonstrated to display strong electronic correlations in its normal state, whereas a superconducting ground state emerges from Anderson localized electrons. Two novel behaviors of the superconducting state are observed: first , a disorderinduced enhancement of the superconducting transition temperature; second, a reentrant phase coherence with increasing temperature, magnetic field , and current. The intrinsic properties of Na2_0Mo6Se6 are analyzed to offer a thorough understanding of these phenomena. The emergence of superconductivity in such low-dimensional systems provides a fruitful playground to explore electronic order and correlations. Doctor of Philosophy (SPMS) 2018-02-06T09:16:11Z 2018-02-06T09:16:11Z 2018 Thesis Ansermet, D. (2018). Emergent superconductivity in low dimensions. Doctoral thesis, Nanyang Technological University, Singapore. http://hdl.handle.net/10356/73274 10.32657/10356/73274 en 201 p. application/pdf |
| spellingShingle | DRNTU::Science::Physics Ansermet, Diane Emergent superconductivity in low dimensions |
| title | Emergent superconductivity in low dimensions |
| title_full | Emergent superconductivity in low dimensions |
| title_fullStr | Emergent superconductivity in low dimensions |
| title_full_unstemmed | Emergent superconductivity in low dimensions |
| title_short | Emergent superconductivity in low dimensions |
| title_sort | emergent superconductivity in low dimensions |
| topic | DRNTU::Science::Physics |
| url | http://hdl.handle.net/10356/73274 |
| work_keys_str_mv | AT ansermetdiane emergentsuperconductivityinlowdimensions |