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Within the Coulomb blockade regime, our study delves into the charge, spin, and thermoelectric transport characteristics in a benzene-based molecular nano-junction using the Pauli master equation and linear response theory. The charge- and…

介观与纳米尺度物理 · 物理学 2024-01-17 Parbati Senapati , Prakash Parida

We consider a lateral hetero-junction where the left and right leads are made of monolayer graphene and the middle region is made of a gapped tilted Dirac material (borophene or quinoid graphene) illuminated with off-resonant circularly…

介观与纳米尺度物理 · 物理学 2020-07-22 Priyadarshini Kapri , Bashab Dey , Tarun Kanti Ghosh

We theoretically study the electronic and transport properties of two graphene layers vertically coupled by an insulating layer under the influence of a time-periodic external light field. The non-adiabatic driving induces excitations of…

介观与纳米尺度物理 · 物理学 2020-06-11 Pascal Stadler , Tomas Löfwander , Mikael Fogelström

We have investigated the energy loss of hot electrons in metallic graphene by means of GHz noise thermometry at liquid helium temperature. We observe the electronic temperature T / V at low bias in agreement with the heat diffusion to the…

介观与纳米尺度物理 · 物理学 2012-08-14 A. C. Betz , F. Vialla , D. Brunel , C. Voisin , M. Picher , A. Cavanna , A. Madouri , G. Fève , J. -M. Berroir , B. Plaçais , E. Pallecchi

One of the salient features of graphene is the very high carrier mobility that implies tremendous potential for use in electronic devices. Unfortunately, transport measurements find the expected high mobility only in freely suspended…

介观与纳米尺度物理 · 物理学 2015-06-04 Søren Ulstrup , Marco Bianchi , Richard Hatch , Dandan Guan , Alessandro Baraldi , Dario Alfè , Liv Hornekær , Philip Hofmann

We describe charging a quantum dot induced electrostatically within a semiconducting graphene nanoribbon by electrons or holes. The applied model is based on a tight-binding approach with the electron-electron interaction introduced by a…

介观与纳米尺度物理 · 物理学 2015-09-30 D. P. Żebrowski , B. Szafran

This is a numerical study of thermoelectric properties of ballistic bilayer graphene in the presence of trigonal warping term in the effective Hamiltonian. We find, in the mesoscopic samples of the length $L>10\,\mu{}$m at sub-Kelvin…

介观与纳米尺度物理 · 物理学 2018-03-06 Dominik Suszalski , Grzegorz Rut , Adam Rycerz

From the scattering of semicoherent-state wavepackets at high magnetic field, we derive analytically the transmission coefficient of electrons in graphene in the quantum Hall regime through a smooth constriction described by a quadratic…

介观与纳米尺度物理 · 物理学 2010-11-13 Martina Flöser , Thierry Champel , Serge Florens

Thermoelectric effects allow the generation of electrical power from waste heat and the electrical control of cooling and heating. Remarkably, these effects are also highly sensitive to the asymmetry in the density of states around the…

介观与纳米尺度物理 · 物理学 2016-07-13 I. J. Vera-Marun , J. J. van den Berg , F. K. Dejene , B. J. van Wees

We discuss the possibility of superconductivity in graphene taking into account both electron-phonon and electron-electron Coulomb interactions. The analysis is carried out assuming that the Fermi energy is far away from the Dirac points,…

超导电性 · 物理学 2011-12-13 M. Einenkel , K. B. Efetov

We theoretically investigate the thermoelectric properties (electronic contribution) of a normal-superconductor (NS) hybrid junction, where the normal region consists of magic-angle twisted bilayer graphene (MATBG). The superconducting…

介观与纳米尺度物理 · 物理学 2025-10-14 Kamalesh Bera , Pritam Chatterjee , Priyanka Mohan , Arijit Saha

The electronic thermal conductivity of graphene and 2D Dirac materials is of fundamental interest and can play an important role in the performance of nano-scale devices. We report the electronic thermal conductivity, $K_{e}$, in suspended…

介观与纳米尺度物理 · 物理学 2013-07-01 S. Yiğen , V. Tayari , J. O. Island , J. M. Porter , A. R. Champagne

Recently, CoSi has been identified to have unconventional electronic topology due to lack of inversion center in its B20 cubic structure. The electronic topology has been reported to be present at three nodal points found in the band…

强关联电子 · 物理学 2021-08-16 Paromita Dutta , Sudhir K. Pandey

We report on the experimental observation of thermoelectric currents in superconductor-ferromagnet tunnel junctions in high magnetic fields. The thermoelectric signals are due to a spin-dependent lifting of particle-hole symmetry, and are…

超导电性 · 物理学 2016-03-03 S. Kolenda , M. J. Wolf , D. Beckmann

Quantum transport anomalies in systems obeying Haldane-Wu fractional exclusion statistics, characterized by the statistical interactions parameter $g$ are investigated. We identify particle-hole symmetry breaking of the Haldane-Wu…

介观与纳米尺度物理 · 物理学 2025-06-03 Sampurna Karmakar , Amulya Ratnakar , Sourin Das

The complete theory of electrical conductivity of graphene at arbitrary temperature is developed with taken into account mass-gap parameter and chemical potential. Both the in-plane and out-of-plane conductivities of graphene are expressed…

介观与纳米尺度物理 · 物理学 2017-12-25 G. L. Klimchitskaya , V. M. Mostepanenko , V. M. Petrov

The Fano-Kondo effect in zero-bias conductance is investigated based on a theoretical model for the T-shaped quantum dot. The conductance as a function of the gate voltage is generally characterized by a Fano asymmetric parameter q. With…

介观与纳米尺度物理 · 物理学 2009-11-10 Isao Maruyama , Naokazu Shibata , Kazuo Ueda

We developed a theory of electric and thermoelectric conductivity of lightly doped SrTiO$_3$ in the non-degenerate region $k_B T \geq E_F$, assuming that the major source of electron scattering is their interaction with soft transverse…

其他凝聚态物理 · 物理学 2021-09-15 Kh. G. Nazaryan , M. V. Feigelman

In this work we study thermoelectric properties of graphene nanoribbons with side-attached organic molecules. By adopting a single-band tight binding Hamiltonian and the Green's function formalism, we calculated the transmission and Seebeck…

介观与纳米尺度物理 · 物理学 2013-06-26 L. Rosales , C. D. Nunez , M. Pacheco , A. Latge , P. A. Orellana

Quantum transport properties through some multilevel quantum dots sandwiched between two metallic contacts are investigated by the use of Green's function technique. Here we do parametric calculations, based on the tight-binding model, to…

介观与纳米尺度物理 · 物理学 2009-11-06 Santanu K. Maiti