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We propose that ordinary semiconductors with large spin-orbit coupling (SOC), such as GaAs, can host stable, robust, and {\it tunable} topological states in the presence of quantum confinement and superimposed potentials with hexagonal…

介观与纳米尺度物理 · 物理学 2015-06-11 O. P. Sushkov , A. H. Castro Neto

A scheme is proposed to electrically measure the spin-momentum coupling in the topological insulator surface state by injection of spin polarized electrons from silicon. As a first approach, devices were fabricated consisting of thin…

介观与纳米尺度物理 · 物理学 2015-06-05 C. Ojeda-Aristizabal , M. S. Fuhrer , N. P Butch , J. Paglione , I. Appelbaum

Topological insulators have attracted great interest as generators of spin-orbit torques (SOTs) in spintronic devices. Bi\textsubscript{1-x}Sb\textsubscript{x} is a prominent topological insulator that has a high charge-to-spin conversion…

Progress in high-performance computing demands significant advances in memory technology. Among novel memory technologies that promise efficient device operation on a sub-ns timescale, resistance switching between charge ordered phases of…

We investigated a possible use of the magnonic interferometric switches in multi-valued logic circuits. The switch is a three-terminal device consisting of two spin channels where input, control, and output signals are spin waves. Signal…

介观与纳米尺度物理 · 物理学 2017-02-01 M. Balynsky , A. Kozhevnikov , Y. Khivintsev , T. Bhowmick , D. Gutierrez , H. Chiang , G. Dudko , Y. Filimonov , G. Liu , C. Jiang , A. A. Balandin , R. Lake , A. Khitun

The prospective of optically inducing a spin polarized current for spintronic devices has generated a vast interest in the out-of-equilibrium electronic and spin structure of topological insulators (TIs). In this Letter we prove that only…

We present a novel hybrid CMOS-MQCA architecture using multi-layer Spintronic devices as computing elements. A feasibility study is presented with 22nm CMOS where new approaches for spin transfer torque induced clocking and read-out scheme…

新兴技术 · 计算机科学 2012-03-20 Jayita Das , Syed M. Alam , Srinath Rajaram , Sanjukta Bhanja

In this paper, we propose a Spin-Torque (ST) based sensing scheme that can enable energy efficient multi-bit long distance interconnect architectures. Current-mode interconnects have recently been proposed to overcome the performance…

新兴技术 · 计算机科学 2016-04-20 Zubair Al Azim , Abhronil Sengupta , Syed Shakib Sarwar , Kaushik Roy

Multi-layered materials provide fascinating platforms to realize various functional properties, possibly leading to future electronic devices controlled by external fields. In particular, layered magnets coupled with conducting layers have…

Spin-orbit torque provides an efficient pathway to manipulate the magnetic state and magnetization dynamics of magnetic materials, which is crucial for energy-efficient operation of a variety of spintronic devices such as magnetic memory,…

介观与纳米尺度物理 · 物理学 2021-02-24 Hang Xie , Xin Chen , Ziyan Luo , Yihong Wu

We present a novel memory device that consists of a thin ferromagnetic layer of Fe deposited on topological insulator thin film, Bi2Se3. The ferromagnetic layer has perpendicular anisotropy, due to MgO deposited on the top surface of Fe.…

介观与纳米尺度物理 · 物理学 2016-02-18 Bahniman Ghosh , Rik Dey , Leonard F. Register , Sanjay K. Banerjee

Many efforts have been made in the past decade to realize topological superconductivity using superconducting proximity effect, but an ideal platform is still lacking. A 3D topological insulator (TI) is promising for this purpose due to the…

介观与纳米尺度物理 · 物理学 2025-08-18 Ella Nikodem , Jakob Schluck , Henry F. Legg , Max Geier , Michal Papaj , Mahasweta Bagchi , Liang Fu , Yoichi Ando

Topological insulators (TIs) are materials that have a bulk electronic band gap like an ordinary insulator but have protected conducting states on their surface. One of the most interesting properties of TIs is their spin helicity, whereby…

介观与纳米尺度物理 · 物理学 2013-07-19 Xuetao Zhu , Colin Howard , Jiandong Guo , Michael El-Batanouny

Nanomagnetic logic, which makes use of arrays of dipolar-coupled single domain nanomagnets for computation, holds promise as a low power alternative to traditional computation with CMOS. Beyond the use of nanomagnets for Boolean logic,…

Topological insulators possess completely different spin-orbit coupled bulk and surface electronic spectra that are each predicted to exhibit exotic responses to light. Here we report time-resolved fundamental and second harmonic optical…

介观与纳米尺度物理 · 物理学 2011-08-24 D. Hsieh , F. Mahmood , J. W. McIver , D. R. Gardner , Y. S. Lee , N. Gedik

Due to stringent thermal budgets in cryogenic technologies such as superconducting quantum computers and sensors, minimizing the energy dissipation and power consumption of cryogenic electronic components is pivotal for large-scale devices.…

All-spin-based computing combining logic and nonvolatile magnetic memory is promising for emerging information technologies. However, the realization of a universal spin logic operation representing a reconfigurable building block with…

介观与纳米尺度物理 · 物理学 2024-10-11 Dmitrii Khokhriakov , Shehrin Sayed , Anamul Md. Hoque , Bogdan Karpiak , Bing Zhao , Supriyo Datta , Saroj P. Dash

Smart material implication (SIMPLY) logic has been recently proposed for the design of energy-efficient Logic-in-Memory (LIM) architectures based on non-volatile resistive memory devices. The SIMPLY logic is enabled by adding a comparator…

新兴技术 · 计算机科学 2022-06-01 Raffaele De Rose , Tommaso Zanotti , Francesco Maria Puglisi , Felice Crupi , Paolo Pavan , Marco Lanuzza

(Bi$_{1-x}$Sb$_x$)$_2$Te$_3$ topological insulators (TIs) are gathering increasing attention owing to their large charge-to-spin conversion efficiency and the ensuing spin-orbit torques (SOTs) that can be used to manipulate the…

Properly tuning the Fermi level position in topological insulators is of vital importance to tailor their spin-polarized electronic transport and to improve the efficiency of any functional device based on them. Here we report the full in…

材料科学 · 物理学 2023-10-24 E. Longo , L. Locatelli , P. Tsipas , A. Lintzeris , A. Dimoulas , M. Fanciulli , M. Longo , R. Mantovan