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A comparative analysis of the observed effects of 2D tunneling bifurcations for quasi-one-dimensional and quasi-two-dimensional Au-QD systems in an external electric field
| Theme: | Physical and mathematical sciences | |
| Author: | Vladimir Dmitrievich , Mikhail Borisovich , Зайцев Роман Владимирович | |
| Annotation: | The effects of 2D tunneling bifurcations for quasi-one-dimensional and quasi-two-dimensional Au-quantum dot (QD) arrays in thin dielectric films in an external electric field have been studied theoretically and experimentally by Conductive Atomic Force Microscopy (CAFM). In the case of quasi-one-dimensional Au-QD structures (with the QD size similar to 5 nm), in a dielectric film, a single break under positive bias polarity, corresponding to the effect of 2D tunneling bifurcation, previously predicted theoretically by our team [1], has been detected in experimental I-V curves of the CAFM probe-to-sample contact. A convincing qualitative agreement between the obtained experimental I-V curves and the theoretical field dependence for the 2D-dissipative tunneling probability in the model 2D-oscillator potential has been obtained for the case of parallel tunneling in the weak-dissipation limit at a finite temperature in an external electric field. In the case of quasi-two-dimensional structures with Au-QD (with the QD sizes of 2 to 5 nm), possessing metamaterial properties, a pair of kinks corresponding to the double effect of 2D-tunneling bifurcations has been detected on the experimental I-V curves. A qualitative agreement between the experimental I-V curves and the theoretical field dependence for the 2D-dissipative tunneling probability has been obtained for a situation with an effectively "negative" permittivity of the heat bath. | |
| Type: | Article | |
| Kind: | Electronic copy | |
| Parts: | 1 | |
| The year of publishing: | 2018 | |
| Publishing house: | Университет ИТМО | |
| The target audience: | Researcher | |
| Special purpose: | Scientific | |
| Copyright holder: | Университет ИТМО | |
| ISSN: | 2220-8054 | |
| DOI: | 10.17586/2220-8054-2018-9-6-724-734 | |
| Pages: | 724-734 | |
| Vol: | 9(6) | |
| Url: | https://apps.webofknowledge.com/full_record.do?product=WOS&search_mode=GeneralSearch&qid=1&SID=F13ftwMSGrIaZI4bjMv&page=1&doc=1&cacheurlFromRightClick=no | |
| Language: | English | |
| Post date: | 23.10.2019 |