Phonon mediated spin-filtering in a molecular junction-transistor at a non-zero temperature. (2022)

• Record Type: Journal Article
• Authors: Bhattacharyya, Kuntal; Kalla, Manasa; Chatterjee, Ashok
• Is Part Of: Materials today. Volume 66:Part 7(2022)
• Page Start: 3250
• Page End: 3252
• Publication Date: 2022
• Subjects: Molecular junction-transistor -- Magnetic field and temperature -- Keldysh method -- Spin-filtration; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2022.06.299
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: We study a quantum mechanical transport away from equilibrium in a molecular junction-transistor at a non-zero magnetic field and temperature. The quantum dot possesses Hubbard correlation and electron-phonon coupling, and it also interacts with the substrate phonons, which makes the transport dissipative. We use Keldysh Green's function technique under the framework of the Anderson-Holstein-Caldeira-Leggett model to calculate tunnelling current, conductance and spin polarization. It is observed that the magnetic field and temperature influence the spin-resolved transport significantly, which may be useful for tunable spin-filtration.