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

Категория: физико-математические науки
Авторы (ПГУ): Кревчик Владимир Дмитриевич [50]  , Семенов Михаил Борисович [50]  , Зайцев Роман Владимирович [0]  
Аннотация: 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.
Тип: Статья
Вид: электронная копия бумажного издания
Количество частей: 1
Год издания: 2018
Издательство: Университет ИТМО
Где опубликовано: Журнал
Индексация: Web of Science (тип документа Article)
Целевая аудитория: Исследователь
Целевое назначение: Научное
Лицензия: Нет ограничений
Ограничения: Нет ограничений
Правообладатель: Университет ИТМО
ISSN: 2220-8054
DOI: 10.17586/2220-8054-2018-9-6-724-734
Страницы (с ... по ...): 724-734
Том: 9(6)
Внешняя веб-ссылка: https://apps.webofknowledge.com/full_record.do?product=WOS&search_mode=GeneralSearch&qid=1&SID=F13ftwMSGrIaZI4bjMv&page=1&doc=1&cacheurlFromRightClick=no
Язык: Английский
Место хранения:Вне ПГУ
Дата размещения:23.10.2019
Владелец:Семенов Михаил Борисович
Ссылка на ресурс:
http://elib.pnzgu.ru/library/1571830329