Transient dynamics of a single molecular transistor in the presence of local electron–phonon and electron–electron interactions and quantum dissipation

Kalla, Manasa; Chebrolu, Narasimha Raju; Chatterjee, Ashok

doi:10.1038/s41598-022-13032-4

Cited by 5 publications

(2 citation statements)

References 44 publications

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“…Chatterjee and collaborators 56 have examined the effect of damping on the magneto-transport properties in SMT and also the effect of temperature on the tunneling current in an dissipative SMT system. Chatterjee and collaborators have recently studied the transient dynamics of an SMT device 57 .…”

Section: Introductionmentioning

confidence: 99%

Transport through a correlated polar side-coupled quantum dot transistor in the presence of a magnetic field and dissipation

Sharma,

Kalla,

Chatterjee

2024

Sci Rep

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Non-equilibrium magneto-transport properties of a quantum dot dimer transistor are studied in the presence of electron–electron and electron–phonon interactions and the interaction of the dimer phonons with the substrate phonon bath that gives rise to dissipation. The entire system is modeled by the Anderson–Holstein–Caldeira–Leggett Hamiltonian where the Caldeira–Leggett term takes care of the damping. The electron–phonon interaction is dealt with the Lang–Firsov transformation and the electron–electron interaction is treated at the mean-field level. The transport problem is studied using the Keldysh non-equilibrium Green function theory and the effects of electron–electron interaction, external magnetic field, electron–phonon interaction and damping on spectral function, tunneling current and differential conductance of the dimer transistor are calculated.

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Section: Introductionmentioning

confidence: 99%

Transport through a correlated polar side-coupled quantum dot transistor in the presence of a magnetic field and dissipation

Sharma,

Kalla,

Chatterjee

2024

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“…Kalla et al have theoretically analysed the effect of temperature between the source and the drain in an SMT system 47 . Very recently, Kalla et al have studied the transient dynamics in a dissipative SMT with e–p and e–e interaction 48 .…”

Section: Introductionmentioning

confidence: 99%

Rashba effect on finite temperature magnetotransport in a dissipative quantum dot transistor with electronic and polaronic interactions

Bhattacharyya

Debnath

Chatterjee

2023

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The Rashba spin–orbit coupling induced quantum transport through a quantum dot embedded in a two-arm quantum loop of a quantum dot transistor is studied at finite temperature in the presence of electron–phonon and Hubbard interactions, an external magnetic field and quantum dissipation. The Anderson-Holstein-Caldeira-Leggett-Rashba model is used to describe the system and several unitary transformations are employed to decouple some of the interactions and the transport properties are calculated using the Keldysh technique. It is shown that the Rashba coupling alone separates the spin-up and spin-down currents causing zero-field spin-polarization. The gap between the up and down-spin currents and conductances can be changed by tuning the Rashba strength. In the absence of a field, the spin-up and spin-down currents show an opposite behaviour with respect to spin–orbit interaction phase. The spin-polarization increases with increasing electron–phonon interaction at zero magnetic field. In the presence of a magnetic field, the tunneling conductance and spin-polarization change differently with the polaronic interaction, spin–orbit interaction and dissipation in different temperature regimes. This study predicts that for a given Rashba strength and magnetic field, the maximum spin-polarization in a quantum dot based device occurs at zero temperature.

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A stable numerical scheme for solving heat transport equations on the microscopic and cracked domains

Safari

2024

International Communications in Heat and Mass Transfer

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Transient dynamics of a single molecular transistor in the presence of local electron–phonon and electron–electron interactions and quantum dissipation

Cited by 5 publications

References 44 publications

Transport through a correlated polar side-coupled quantum dot transistor in the presence of a magnetic field and dissipation

Transport through a correlated polar side-coupled quantum dot transistor in the presence of a magnetic field and dissipation

Rashba effect on finite temperature magnetotransport in a dissipative quantum dot transistor with electronic and polaronic interactions

A stable numerical scheme for solving heat transport equations on the microscopic and cracked domains

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