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A quantum bound on the 1/f noise in semiconductors with a conical energy-momentum dispersionстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Дата последнего поиска статьи во внешних источниках: 24 ноября 2021 г.
- Автор: Kazakov Kirill A.
- Журнал: Physics Letters A
- Том: 419
- Год издания: 2021
- Первая страница: 127741
- DOI: 10.1016/j.physleta.2021.127741
- Аннотация: The quantum indeterminacy caused by non-commutativity of observables at different times sets a lower bound on the voltage noise power spectrum in any conducting material. This bound is calculated explicitly in the case of semiconductors with a conical energy-momentum dispersion of charge carriers. It possesses all characteristic properties of 1/f noise. Its momentum decomposition is found to be singular at zero particle momentum, a measurable consequence being a sharp peak in the noise magnitude at small charge carrier density. In application to monolayer graphene, this peak becomes M-shaped on account of a continuous transition from the electron to hole conductivity. A comparison with experimental data is made which demonstrates that the calculated power spectrum is close in magnitude and congruent to the observed.
- Добавил в систему: Казаков Кирилл Александрович