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A domain wall in a ferromagnetic one-dimensional nanowire experiences current induced motion due to its coupling with the conduction electrons. When the current is not sufficient to drive the domain wall through the wire, or it is confined…

Mesoscale and Nanoscale Physics · Physics 2012-07-13 Nicholas Sedlmayr , Jamal Berakdar

Non-linear conduction in a single crystal of charge-ordered Pr$_{0.63}$Ca$_{0.37}$MnO$_{3}$ has been investigated in an applied magnetic field. In zero field, the non-linear conduction, which starts at T$<$T$_{CO}$ can give rise to a region…

Strongly Correlated Electrons · Physics 2009-10-31 Ayan Guha , A. K. Raychaudhuri , A. R. Raju , C. N. R. Rao

Two-dimensional (2D) layered materials possess outstanding mechanical, electronic and optical properties, making them ideal materials for nanoelectromechanical applications. The recent discovery of 2D magnetic materials has promised a new…

Mesoscale and Nanoscale Physics · Physics 2020-01-10 Shengwei Jiang , Hongchao Xie , Jie Shan , Kin Fai Mak

We report an unusual breakdown of the magnetically induced Wigner solid in an exceptional two-dimensional electron gas. The current-voltage characteristic is found to be hysteretic in the voltage biased setup and has a region of negative…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 G. A. Csathy , D. C. Tsui , L. N. Pfeiffer , K. W. West

We present the appearance of negative differential resistance (NDR) in spin-dependent electron transport through a few-atom spin-chain. A chain of three antiferromagnetically coupled Fe atoms(Fe trimer) was positioned on a Cu2N/Cu(100)…

Engineering devices with a large electrical response to magnetic field is of fundamental importance for a range of applications such as magnetic field sensing and magnetic read-heads. We show that a colossal non-saturating linear…

Mesoscale and Nanoscale Physics · Physics 2012-08-28 M. A. Aamir , Srijit Goswami , Matthias Baenninger , Vikram Tripathi , Michael Pepper , Ian Farrer , David A. Ritchie , Arindam Ghosh

We have studied the electrical conductivity behavior of highly crystallized undoped hydrogenated microcrystalline silicon films having different microstructures. The dark conductivity is seen to follow Meyer Neldel rule (MNR) in some films…

Materials Science · Physics 2009-11-13 Sanjay K. Ram , Satyendra Kumar , P. Roca i Cabarrocas

We simulate quantum transport between a graphene nanoribbon (GNR) and a single-walled carbon nanotube (CNT) where electrons traverse vacuum gap between them. The GNR covers CNT over a nanoscale region while their relative rotation is 90…

Mesoscale and Nanoscale Physics · Physics 2014-01-21 Kamal K. Saha , Branislav K. Nikolic

Two-dimensional material-based memristors have recently gained attention as components of future neuromorphic computing concepts. However, their surrounding atmosphere can influence their behavior. In this work, we investigate the resistive…

Negative longitudinal magnetoresistances (NLMRs) have been recently observed in a variety of topological materials and often considered to be associated with Weyl fermions that have a defined chirality. Here we report NLMRs in non-Weyl GaAs…

We have investigated the time-dependent fluctuations in electrical resistance, or noise, in high quality crystalline magnetic nanowires within nanoporous templates. The noise increases exponentially with increasing temperature and magnetic…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 Amrita Singh , Debtosh Chowdhary , Arindam Ghosh

The present-day nanodevice dimensions continuously shrink, with the aim to prolong Moore's law. As downsizing meticulously persists, undesirable dynamic defects, which cause low-frequency noise and structural instability, play detrimental…

Mesoscale and Nanoscale Physics · Physics 2020-08-21 Sheng-Shiuan Yeh , Cheng-Ya Yu , Yi-Te Lee , Shao-Pin Chiu , Juhn-Jong Lin

Nonlinear and hysteretic electrical devices are needed for applications from circuit protection to next-generation computing. Widely-studied devices for resistive switching are based on mass transport, such as the drift of ions in an…

Applied Physics · Physics 2021-01-13 Han Yin , Abinash Kumar , James M. LeBeau , R. Jaramillo

One of the ultimate goals of molecular electronics is to create technologies that will complement - and eventually supersede - Si-based microelectronics technologies. To reach this goal, electronic properties that mimic at least some of the…

Mesoscale and Nanoscale Physics · Physics 2015-06-26 Bingqian Xu , Yonatan Dubi

Using density functional theory and non-equilibrium Greens function technique, we performed theoretical investigations on the structural and transport properties of zigzag silicene nanoribbons with Stone-Wales defect. The calculated…

Materials Science · Physics 2016-01-07 Dace Zha , Changpeng Chen , Manman Wang

Behaviour of hot electrons under the influence of dc field in carbon nanotubes is theoretically considered. The study was done semi-classically by solving Boltzmann transport equation with the presence of the hot electrons source to derive…

Mesoscale and Nanoscale Physics · Physics 2016-10-10 M. Amekpewu , K. A. Dompreh , S. Y. Mensah , N. G. Mensah , S. S. Abukari , R. Musah , A. Twum , R. Edziah

The interplay between uniaxial strain and charging effects in zigzag graphene nanoribbons (ZGNR) is investigated by using non-equilibrium Green's function formalism. The I-V characteristic curves and especially negative differential…

Mesoscale and Nanoscale Physics · Physics 2019-12-05 Maliheh Azadparvar , Hosein Cheraghchi

We report on the observation of non-metallic electrical conduction, resistive switching, and a negative temperature coefficient of resistance in cluster-assembled nanostructured gold films above the electrical percolation and in…

Mesoscale and Nanoscale Physics · Physics 2020-05-18 M. Mirigliano , S. Radice , A. Falqui , A. Casu , F. Cavaliere , P. Milani

We have experimentally studied the nonlinear nature of electrical conduction in monolayer graphene devices on silica substrates. This nonlinearity manifests itself as a nonmonotonic dependence of the differential resistance on applied DC…

Mesoscale and Nanoscale Physics · Physics 2012-06-04 A. S. Price , S. M. Hornett , A. V. Shytov , E. Hendry , D. W. Horsell

We review experimental and theoretical results on thermal transport in semiconductor nanostructures (multilayer thin films, core/shell and segmented nanowires), single- and few-layer graphene, hexagonal boron nitride, molybdenum disulfide…

Mesoscale and Nanoscale Physics · Physics 2018-06-13 Alexandr I. Cocemasov , Calina I. Isacova , Denis L. Nika
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