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相关论文: Dynamical Detection of Topological Spectral Densit…

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The non-trivial topology in the layered $\text{FeTe}_{0.55}\text{Se}_{0.45}$ (FTS) superconductor has been suggested by both theory and experiment to be strongly dependent on the Te concentration. Motivated by this together with the Te…

强关联电子 · 物理学 2022-02-02 Tamoghna Barik , Jay D. Sau

Fascination in topological materials originates from their remarkable response properties and exotic quasiparticles which can be utilized in quantum technologies. In particular, large-scale efforts are currently focused on realizing…

介观与纳米尺度物理 · 物理学 2023-05-30 Paul Baireuther , Marcin Płodzień , Teemu Ojanen , Jakub Tworzydło , Timo Hyart

For spinful systems with spin 1/2, it is generally believed that P and T invariant strong and second-order topologies exist in four band and eight band system, respectively. Here, by using periodic driving, we find it is possible to have…

介观与纳米尺度物理 · 物理学 2024-06-14 Hong Wu , Yu-Chen Dong , Hui Liu

We study local density of state (LDOS) oscillations arising from the scattering of electrons at atomic edge defects in topological insulator (TI) surfaces. To create edge scattering on the surface of a TI, we assume that half of its surface…

介观与纳米尺度物理 · 物理学 2024-09-04 David J. Alspaugh , D. N. Sheng , Mahmoud M. Asmar

The tight-binding model for a chain, where the hopping constants follow a Fibonacci sequence, predicts multifractality in the spectrum and wavefunctions. Experimentally, we realize this model by chains of small dielectric resonators with…

无序系统与神经网络 · 物理学 2023-08-28 Mattis Reisner , Yanel Tahmi , Frédéric Piéchon , Ulrich Kuhl , Fabrice Mortessagne

We introduce a generalization of local density of states which is "windowed" with respect to position and energy, called the windowed local density of states (wLDOS). This definition generalizes the usual LDOS in the sense that the usual…

数学物理 · 物理学 2022-10-25 Terry A. Loring , Jianfeng Lu , Alexander B. Watson

The local density of states (LDOS) of the adsorbate induced two-dimensional electron system (2DES) on n-InAs(110) is studied by low-temperature scanning tunneling spectroscopy. In contrast to a similar 3DES, the 2DES LDOS exhibits 20 times…

无序系统与神经网络 · 物理学 2009-11-07 M. Morgenstern , J. Klijn , Chr. Meyer , R. A. Roemer , R. Wiesendanger

We have investigated the local density of optical states (LDOS) in titania and silicon inverse opals -- three-dimensional photonic crystals that have been realized experimentally. We used the H-field plane-wave expansion method to calculate…

光学 · 物理学 2009-07-27 Ivan S. Nikolaev , Willem L. Vos , A. Femius Koenderink

The local density of states (LDOS) in a one-dimensional helical channel of finite length is studied within a Tomonaga-Luttinger model at zero temperature. Two particular cases of loop and Josephson junction geometries are considered. The…

介观与纳米尺度物理 · 物理学 2015-06-19 Yositake Takane

The average shape of the Spectral Local Density of States (LDOS) and eigenfunctions (EFs) has been studied numerically for a conservative dynamical model (three-orbital Lipkin-Meshkov-Glick model) which can exhibit strong chaos in the…

chao-dyn · 物理学 2009-10-30 Wen-ge Wang , F. M. Izrailev , G. Casati

The local density of states (LDOS) in finite quantum wires is calculated as a function of discrete energies and position along the wire. By using a combination of numerical density matrix renormalization group (DMRG) calculations and…

强关联电子 · 物理学 2009-11-13 Imke Schneider , Alexander Struck , Michael Bortz , Sebastian Eggert

We study the basic features of the local density of states (LDOS) observed in STM experiments on high-T$_c$ d-wave superconductors in the context of a minimal model of a d-wave superconductor which has {\it weakly} modulated off-diagonal…

超导电性 · 物理学 2015-05-14 Dimitrios Galanakis , Stefanos Papanikolaou

The Floquet state, which is a periodically and intensely light driven quantum state in solids, has been attracting attention as a novel state that is coherently controllable on an ultrafast time scale. An important issue has been to…

We measured the local density of states (LDOS) of a quasi two-dimensional (2D) electron system near point defects on a surface of highly oriented pyrolytic graphite (HOPG) with scanning tunneling microscopy and spectroscopy. Differential…

介观与纳米尺度物理 · 物理学 2009-11-11 Y. Niimi , H. Kambara , T. Matsui , D. Yoshioka , Hiroshi Fukuyama

We develop a theory of the local density of states (LDOS) of disordered superconductors, employing the non-linear sigma-model formalism and the renormalization-group framework. The theory takes into account the interplay of disorder and…

介观与纳米尺度物理 · 物理学 2016-08-09 I. S. Burmistrov , I. V. Gornyi , A. D. Mirlin

Motivated by high-accuracy scanning tunneling spectroscopy measurements on disordered two-dimensional electron gases in strong magnetic field, we present an exact solution for the local density of states (LDoS) of electrons moving in an…

介观与纳米尺度物理 · 物理学 2009-10-29 Thierry Champel , Serge Florens

The profiles of local density of states (LDOS) around different vortex configurations in mesoscopic superconductors are studied taking account of the interference of quasiparticle waves experiencing Andreev reflection within the vortex…

超导电性 · 物理学 2015-05-13 A. S. Mel'nikov , D. A. Ryzhov , M. A. Silaev

Periodically driven quantum systems, known as Floquet systems, provide a versatile platform for engineering novel topological phases absent in static settings. However, dynamically characterizing these non-equilibrium topological invariants…

量子物理 · 物理学 2026-05-08 Xin Shen , Bing Lu , Yan-Qing Zhu

We measure the statistical distribution of the local density of optical states (LDOS) on disordered semi-continuous metal films. We show that LDOS fluctuations exhibit a maximum in a regime where fractal clusters dominate the film surface.…

光学 · 物理学 2015-05-19 V. Krachmalnicoff , E. Castanié , Y. De Wilde , R. Carminati

We propose DOPS, a fast single-stage 3D object detection method for LIDAR data. Previous methods often make domain-specific design decisions, for example projecting points into a bird-eye view image in autonomous driving scenarios. In…

计算机视觉与模式识别 · 计算机科学 2020-04-08 Mahyar Najibi , Guangda Lai , Abhijit Kundu , Zhichao Lu , Vivek Rathod , Thomas Funkhouser , Caroline Pantofaru , David Ross , Larry S. Davis , Alireza Fathi