Heat flow enhancement in a nanoscale plasmonic junction induced by Kondo resonances and electron-phonon coupling
Physica E: Low-Dimensional Systems and Nanostructures, cilt.127, 2021 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 127
- Basım Tarihi: 2021
- Doi Numarası: 10.1016/j.physe.2020.114536
- Dergi Adı: Physica E: Low-Dimensional Systems and Nanostructures
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Applied Science & Technology Source, Compendex, Computer & Applied Sciences, INSPEC
- Anahtar Kelimeler: Electron-phonon, Heat transport, Kondo temperature, NEGF, Plasmonic
- Bilecik Şeyh Edebali Üniversitesi Adresli: Evet
Özet
© 2020 Elsevier B.V.Recently, we showed that plasmon-exciton coupling can increase entropy current through a bridge coupled to plasmonic metal nanoparticles. Here we show that electron-phonon coupling can also be used to control the entropy current in similar systems. Entropy current tends to decrease due to electron-phonon coupling and to exhibit a monotonous decrease upon temperature ramping. However, an anomaly affecting the current where it is enhanced by electron-phonon coupling is indicated at around 42 times the system's Kondo temperature. We therefore report means to control heat flow by tuning the Kondo resonance through the electron-phonon coupling. We analyze the conditions that bring about these trends due to electron-phonon coupling by employing non-equilibrium Green's function formulation addressing the entropy current and the derived heat flow.