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We study a fermionic two-band model with the interband transition resonantly coupled to a cavity. This model was recently proposed to explain cavity-enhanced charge transport, but a thorough characterization of the closed system, in…

计算物理 · 物理学 2024-01-08 Sebastian Stumper , Junichi Okamoto

In this work, we investigate the electronic and optical properties of the b-AsP quantum dots(QDs) and quantum rings(QRs) with different edge types in the presence of an in-plane electric field and a perpendicular magnetic field utilizing…

介观与纳米尺度物理 · 物理学 2022-12-06 Chen Li , Xuefei Yan , Jinluo Cheng , Weiqi Li

The in-plane photoelectric (IPPE) effect is a recently discovered [Sci. Adv. \textbf{8}, eabi8398 (2022)] quantum phenomenon which enables efficient detection of terahertz (THz) radiation in semiconductor structures with a two-dimensional…

介观与纳米尺度物理 · 物理学 2024-04-17 S. A. Mikhailov

The electron transport properties of atomically thin semiconductors such as MoS2 have attracted significant recent scrutiny and controversy. In this work, the scattering mechanisms responsible for limiting the mobility of single layer…

介观与纳米尺度物理 · 物理学 2014-03-25 Nan Ma , Debdeep Jena

General properties of the hopping transport of charge carriers in amorphous organic and inorganic materials are discussed. We consider the case where the random energy landscape in the materials is strongly spatially correlated. This is a…

材料科学 · 物理学 2020-02-24 S. V. Novikov

We show that the huge Seebeck coefficients observed recently for ionic conductors, arise from a ratchet effect where activated jumps between neighbor sites are rectified by a temperature gradient, thus driving mobile ions towards the cold.…

软凝聚态物质 · 物理学 2021-02-17 Alois Würger

Understanding electron transfer in organic molecules is of great interest in quantum materials for light harvesting, energy conversion, and integration of molecules into solar cells. This, however, poses the challenge of designing specific…

化学物理 · 物理学 2019-07-24 Duvalier Madrid-Úsuga , Cristian E. Susa , John H. Reina

We theoretically investigate transport affected by cavity-mediated electron hopping in multi-terminal quantum Hall bars, quantum point contacts, and Aharonov-Bohm interferometers. Beyond determining conductances and resistances, we analyze…

介观与纳米尺度物理 · 物理学 2025-08-05 Dalin Boriçi , Geva Arwas , Cristiano Ciuti

In many organic molecules the strong coupling of excess charges to vibrational modes leads to the formation of polarons, i.e., a localized state of a charge carrier and a molecular deformation. Incoherent hopping of polarons along the…

介观与纳米尺度物理 · 物理学 2015-05-13 Benjamin B. Schmidt , Matthias H. Hettler , Gerd Schön

We predict and study the quantum-electrodynamical effect of parametric self-induced excitation of a molecule moving above the dielectric or conducting medium with periodic grating. In this case the radiation reaction force modulates the…

量子物理 · 物理学 2016-09-08 Alexey Belyanin , Federico Capasso , Vitaly Kocharovsky , Vladimir Kocharovsky

We demonstrate that a simple phenomenological approach can be used to simulate electronic conduction in molecular wires under thermal effects induced by the surrounding environment. This "Landauer-B\"uttiker's probe technique" can properly…

化学物理 · 物理学 2015-08-25 Michael Kilgour , Dvira Segal

Recently an air-stable layered semiconductor Bi2O2Se was discovered to exhibit an ultrahigh mobility in transistors fabricated with its thin layers. In this work, we explored the mechanism that induces the high mobility and distinguishes…

介观与纳米尺度物理 · 物理学 2018-07-04 Huixia Fu , Jinxiong Wu , Hailin Peng , Binghai Yan

To improve mobility of fabricated silicon metal-oxide-semiconductor (MOS) quantum devices, forming gas annealing is a common method used to mitigate the effects of disorder at the Si/SiO2 interface. However, the importance of activation…

介观与纳米尺度物理 · 物理学 2020-05-21 Ke Wang , Hai-Ou Li , Gang Luo , Xin Zhang , Fang-Ming Jing , Rui-Zi Hu , Yuan Zhou , He Liu , Gui-Lei Wang , Gang Cao , Ming Xiao , Hong-Wen Jiang , Guo-Ping Guo

The quantum transport of electrons in an artificial atom, such as a quantum dot (QD), is governed by the Coulomb blockade (CB) effects, revealing the ground-state charge configuration of the electronic system under interplays of the on-site…

The effects of finite temperature in transport through nanoscopic systems exhibiting uniaxial magnetic anisotropy D, such as molecular magnets, adatoms, or quantum dots side-coupled to a large spin are analyzed in the Kondo regime. The…

介观与纳米尺度物理 · 物理学 2015-06-05 Maciej Misiorny , Ireneusz Weymann , Józef Barnaś

We study electron transport properties of some molecular wires and a unconventional disordered thin film within the tight-binding framework using Green's function technique. We show that electron transport is significantly affected by…

介观与纳米尺度物理 · 物理学 2009-06-29 Santanu K. Maiti

Building up a solid-state material from quantum dots (QD), which are often referred to as artificial atoms, offers the potential to create new materials with unprecedented macroscopic properties. The investigation of the electronic…

介观与纳米尺度物理 · 物理学 2024-12-13 Morteza Shokrani , Dorothea Scheunemann , Clemens Göhler , Martijn Kemerink

This communication presents a comparative study on the charge transport (in transient and steady state) in bulk n-type doped SiC-polytypes: 3C-SiC, 4H-SiC and 6H-SiC. The time evolution of the basic macrovariables: the electron drift…

材料科学 · 物理学 2021-09-14 Clóves Gonçalves Rodrigues

A general density-matrix formulation of quantum-transport phenomena in semiconductor nanostructures is presented. More specifically, contrary to the conventional single-particle correlation expansion, we shall investigate separately the…

材料科学 · 物理学 2009-11-11 Rita Claudia Iotti , Emanuele Ciancio , Fausto Rossi

Transport through a molecule sandwiched between two metallic electrodes and coupled to a mesoscopic ring that threads a magnetic flux $\phi$ is studied. An analytic approach for the electron transport through the molecular bridge system is…

介观与纳米尺度物理 · 物理学 2010-01-10 Santanu K. Maiti