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We study the dynamics of vortex lines in Supercondutor/Ferromagnet/Superconductor (SFS) heterostructures at microwave frequencies. We have employed swept-frequency, Corbino-disk and resonant, dielectric-resonator techniques to obtain the…

超导电性 · 物理学 2015-06-03 K. Torokhtii , C. Attanasio , C. Cirillo , E. A. Ilyina , N. Pompeo , S. Sarti , E. Silva

The bands of graphite are extremely sensitive to topological defects which modify the electronic structure. In this paper we found non-dispersive flat bands no farther than 10 meV of the Fermi energy in slightly twisted bilayer graphene as…

介观与纳米尺度物理 · 物理学 2010-12-21 E. Suárez Morell , J. D. Correa , P. Vargas , M. Pacheco , Z. Barticevic

Schottky barrier field-effect transistors (SBFETs) based on few and mono layer phosphorene are simulated by the non-equilibrium Green's function formalism. It is shown that scaling down the gate oxide thickness results in pronounced…

介观与纳米尺度物理 · 物理学 2014-08-22 Runlai Wan , Xi Cao , Jing Guo

In this paper, we propose a novel S/D engineering for dual-gated Bilayer Graphene (BLG) Field Effect Transistor (FET) using doped semiconductors (with a bandgap) as source and drain to obtain unipolar complementary transistors. To simulate…

介观与纳米尺度物理 · 物理学 2016-11-15 Kausik Majumdar , Kota V. R. M. Murali , Navakanta Bhat , Fengnian Xia , Yu-Ming Lin

Transport measurements normally provide a macroscopic, averaged view of the sample, so that disorder prevents the observation of fragile interaction induced states. Here, we demonstrate that transconductance fluctuations in a graphene field…

介观与纳米尺度物理 · 物理学 2012-08-06 Dong Su Lee , Viera Skakalova , R. Thomas Weitz , Klaus von Klitzing , Jurgen H. Smet

We explore phonon-mediated quantum transport through electronic noise characterization of a commercial CMOS transistor. The device behaves as a single electron transistor thanks to a single impurity atom in the channel. A low noise…

The development of flexible electronics operating at radio-frequencies (RF) requires materials that combine excellent electronic performance and the ability to withstand high levels of strain. In this work, we fabricate graphene…

介观与纳米尺度物理 · 物理学 2013-02-07 Nicholas Petrone , Inanc Meric , James Hone , Kenneth L. Shepard

Establishing a reliable communication interface between the brain and electronic devices is of paramount importance for exploiting the full potential of neural prostheses. Current microelectrode technologies for recording electrical…

Graphene nanoribbon (GNR) emerges as an exceptionally promising channel candidate due to its tunable sizable bandgap (0-3 eV), ultrahigh carrier mobility (up to 4600 cm^(2) V^(-1) s^(-1)), and excellent device performance (current on-off…

介观与纳米尺度物理 · 物理学 2024-08-15 Linqiang Xu , Shiqi Liu , Qiuhui Li , Ying Li , Shibo Fang , Ying Guo , Yee Sin Ang , Chen Yang , Jing Lu

Surface graphene guides were interfaced with an array of individual semiconductor quantum dots, whose position was commensurate with the optical guide modes. The surface guide served as a channel for a Field Effect Transistor (FET) while…

介观与纳米尺度物理 · 物理学 2019-07-09 Xin Miao , Haim Grebel

We investigate electronic transport in twisted bilayer graphene (tBLG) under variable temperatures ($T$), carrier densities ($n$), and transverse magnetic fields, focusing on samples with small-twist-angles ($\theta$). These samples show…

介观与纳米尺度物理 · 物理学 2018-08-24 Ting-Fung Chung , Yang Xu , Yong P. Chen

We present a graphene-based phase shifter for radio-frequency (RF) phase-array applications. The core of the designed phase-shifting system consists of a graphene field-effect transistor (GFET) used in a common source amplifier…

介观与纳米尺度物理 · 物理学 2021-03-16 A. Medina-Rull , F. Pasadas , E. G. Marin , A. Toral-Lopez , J. Cuesta , A. Godoy , D. Jiménez , F. G. Ruiz

We investigated the effect of the electron-beam irradiation on the level of the low-frequency 1/f noise in graphene devices. It was found that 1/f noise in graphene reveals an anomalous characteristic - it reduces with increasing…

介观与纳米尺度物理 · 物理学 2015-06-12 Md. Zahid Hossain , Sergey Rumyantsev , Michael S. Shur , Alexander A. Balandin

We study the low-frequency noise (LFN), i.e. flicker noise, also referred to as 1/f noise, in 2D networks of molecularly functionalized gold nanoparticles (NMN: nanoparticle-molecule network). We examine the noise behaviors of the NMN…

介观与纳米尺度物理 · 物理学 2024-12-02 Cécile Huez , David Guérin , Florence Volatron , Anna Proust , Dominique Vuillaume

Remote Sensing (RS) single-image super-resolution aims to reconstruct high-resolution imagery from low-resolution observations while preserving fine spatial structures. Recent Swin Transformer-based models, including Swin2SR, provide strong…

计算机视觉与模式识别 · 计算机科学 2026-05-12 Md Aminur Hossain , Parekh Valkesh , Ayush V. Patel , Yogesh Jethani , Sanjay K. Singh , Biplab Banerjee

With a large portfolio of elemental quantum components, superconducting quantum circuits have contributed to dramatic advances in microwave quantum optics. Of these elements, quantum-limited parametric amplifiers have proven to be essential…

During the last years, Graphene based Field Effect Transistors (GFET) have shown outstanding RF performance; therefore, they have attracted considerable attention from the electronic devices and circuits communities. At the same time,…

介观与纳米尺度物理 · 物理学 2014-05-09 Saul Rodriguez , Sam Vaziri , Anderson Smith , Sebastien Fregonese , Mikael Ostling , Max C. Lemme , Ana Rusu

Flicker or 1/f noise in metal-oxide-semiconductor field-effect transistors (MOSFETs) has been identified as the main source of noise at low frequency. It often originates from an ensemble of a huge number of charges trapping and detrapping.…

介观与纳米尺度物理 · 物理学 2010-10-22 N. Clement , K. Nishiguchi , A. Fujiwara , D. Vuillaume

In this work, we present a performance analysis of Field Effect Transistors based on recently fabricated 100% hydrogenated graphene (the so-called graphane) and theoretically predicted semi-hydrogenated graphene (i.e. graphone). The…

介观与纳米尺度物理 · 物理学 2015-05-18 Gianluca Fiori , S. Lebègue , A. Betti , P. Michetti , M. Klintenberg , O. Eriksson , Giuseppe Iannaccone

Charge noise is an important factor limiting qubit coherence and relaxation in solid-state devices. In bilayer graphene (BLG) quantum dots, recently established as a promising platform for spin- and valley-based qubits, both the origin and…