Kvantu sūkņa elektronu emisijas spektra modelēšana
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Latvijas Universitāte
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Abstract
Nanoelektronikas kvantu sūkņu modelēšanā aktuāls jautājums ir cikla gaitā emitēto elektronu varbūtības sadalījums laikā un ar to saistītais enerģijas spektrs. Darbā tiek apskatīts elektronu emisijas modelis, kas izmanto vienelektrona kvantu punkta izlādes kinētisko vienādojumu. Tiek pētītas iespējas izmantot lineāru un harmonisku potenciālo barjeru modulāciju, lai kontrolētu emitēto elektronu pakešu platumu un formu laika un enerģijas dimensijās. Ir parādīts, ka pie pietiekami lielas harmoniskās modulācijas amplitūdas var iestāties multimodāls elektronu emisijas režīms.
For the modelling of quantum pumps in nanoelectronics the probability time distribution of electrons emitted in one cycle and their energy spectrum is a current problem. In this thesis we consider a model of electron emission that uses the kinetic equation of a one-electron quantum dot discharge. We investigate the possibilities of a two-frequency modulation to control the width of electron packets in time and energy dimensions. It is shown that, given a sufficiently large amplitude of the harmonic modulation, a multimodal electron emission regime is possible.
For the modelling of quantum pumps in nanoelectronics the probability time distribution of electrons emitted in one cycle and their energy spectrum is a current problem. In this thesis we consider a model of electron emission that uses the kinetic equation of a one-electron quantum dot discharge. We investigate the possibilities of a two-frequency modulation to control the width of electron packets in time and energy dimensions. It is shown that, given a sufficiently large amplitude of the harmonic modulation, a multimodal electron emission regime is possible.