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Current-driven magnetization reversal in a ferromagnetic semiconductor based (Ga,Mn)As/GaAs/(Ga,Mn)As magnetic tunnel junction is demonstrated at 30 K. Magnetoresistance measurements combined with current pulse application on a rectangular…

Materials Science · Physics 2009-11-10 D. Chiba , Y. Sato , T. Kita , F. Matsukura , H. Ohno

Based on the energy conversion of the dynamic electric effect from the solid/liquid contact double electric layer is the dynamic electromotive potential, this paper studies the static appearance and the release of the electric field energy…

Chemical Physics · Physics 2023-12-05 Zhengliang Wang , Shanfei Chen , Gelin Wang

In this work, we have designed and simulated new thermoelectric generator based on monolayer and few-layer MoS2 nanoribbons. The proposed thermoelectric generator is composed of thermocouples made of both n-type and p-type MoS2 nanoribbon…

Mesoscale and Nanoscale Physics · Physics 2015-03-20 Abbas Arab , Qiliang Li

We show that when a molecular junction is under an external bias, its properties can not be uniquely determined by the total electron density in the same manner as the density functional theory (DFT) for ground state (GS) properties. In…

Mesoscale and Nanoscale Physics · Physics 2013-11-26 Shuanglong Liu , Yuan Ping Feng , Chun Zhang

Sustainable and economical generation of electrical power is an essential and mandatory component of infrastructure in today's world. Optimal generation (generator subset selection) of power requires a careful evaluation of various factors…

Computational Engineering, Finance, and Science · Computer Science 2017-09-11 Biswarup Bhattacharya , Abhishek Sinha

We design and demonstrate selective injection GaN heterojunction bipolar transistors that utilize a patterned base for selective injection of electrons from the emitter. The design maneuvers minority carrier injection through a thin p-GaN…

Applied Physics · Physics 2024-08-27 Zhanbo Xia , Chandan Joishi , Shahadat H. Sohel , Andy Xie , Edward Beam , Yu Cao , Siddharth Rajan

The p-n diodes represent the most fundamental device building block for diverse optoelectronic functions, but are difficult to achieve in atomically thin transition metal dichalcogenides (TMDs) due to the inability to selectively dope them…

Mesoscale and Nanoscale Physics · Physics 2014-09-17 Rui Cheng , Dehui Li , Hailong Zhou , Chen Wang , Anxiang Yin , Shan Jiang , Yuan Liu , Yu Chen , Yu Huang , Xiangfeng Duan

We present a principle and a simple theory of a novel reverse electroactuator, in which the electrical current is generated by pumping of an electrolytic liquid into nonwetting pores of a polarized electrode. The theory establishes the…

Soft Condensed Matter · Physics 2016-10-12 Anatoly B. Kolomeisky , Alexei A. Kornyshev

Nonlinear interactions between ultrashort optical waveforms and solids can be used to induce and steer electric current on a femtosecond (fs) timescale, holding promise for electronic signal processing at PHz frequencies [Nature 493, 70…

Altermagnets, a recently identified class of magnetic materials, possess a spin-split Fermi surface that results in the so-called spin splitter effect, enabling the generation of a spin current transverse to the injection direction and…

Mesoscale and Nanoscale Physics · Physics 2025-04-17 Konstantinos Sourounis , Aurélien Manchon

We have probed the switching dynamics of the Josephson critical current of a superconducting weak link by measuring its voltage/current characteristics while applying an ac current bias in the range 1-200 MHz. The weak link between two Nb…

Mesoscale and Nanoscale Physics · Physics 2020-09-23 Kevin Spahr , Jonathan Graveline , Chrustian Lupien , Marco Aprili , Bertrand Reulet

A controllable $\pi$-SQUID is a DC SQUID with two controllable $\pi$-junctions as weak links. A controllable $\pi$-junction consists of a superconducting - normal metal - superconducting Josephson junction with two additional contacts to…

Superconductivity · Physics 2009-11-07 J. J. A. Baselmans , B. J. van Wees , T. M. Klapwijk

Josephson junctions made of closely-spaced conventional superconductors on the surface of 3D topological insulators have been proposed to host Andreev bound states (ABSs) which can include Majorana fermions. Here, we present an extensive…

Superconductivity · Physics 2014-07-04 C. Kurter , A. D. K. Finck , P. Ghaemi , Y. S. Hor , D. J. Van Harlingen

Superconducting (SC) diodes are key passive building blocks for future SC electronics. However, realizing their active counterparts is essential for functional logic. Here, we demonstrate deterministic nonvolatile electrical switching of…

Superconductivity · Physics 2026-01-27 Jiajun Ma , Jingyi He , Qiong Qin , Tian Le , Zhiwei Wang , Jie Wu , Congjun Wu , Xiao Lin

This work demonstrates the first nonpolar vertical GaN on GaN pn power diodes grown on m-plane free standing substrates by MOCVD. The SEM and HRXRD results showed the good crystal quality of the homoepitaxial nonpolar structure with low…

Applied Physics · Physics 2018-10-29 H. Fu , X. Zhang , K. Fu , H. Liu , S. R. Alugubelli , X. Huang , H. Chen , I. Baranowski , T. -H. Yang , K. Xu , F. A. Ponce , B. Zhang , Y. Zhao

We report the results of several nonequilibrium experiments performed on superconducting/normal/superconducting (S/N/S) Josephson junctions containing either one or two extra terminals that connect to normal reservoirs. Currents injected…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 M. S. Crosser , Jian Huang , F. Pierre , Pauli Virtanen , Tero T. Heikkilä , F. K. Wilhelm , Norman O. Birge

Diode is a key device in electronics: the charge current can flow through the device under a forward bias, while almost no current flows under a reverse bias. Here we propose a corresponding device in spintronics: the spin-current diode, in…

Mesoscale and Nanoscale Physics · Physics 2015-06-11 Qing-Feng Sun , X. C. Xie

We carefully investigate three important effects including postgrowth activation annealing, delta ({\delta}) dose and p+-GaN layer thickness and experimentally demonstrate their influence on the electrical properties of GaN p-n homojunction…

The notion of Virtual Power Plant (VPP) has been used many times in last years in power systems and for several reasons. As a general trend, the behavior of a classic synchronous generator is to be emulated for a class of conventional grid…

Systems and Control · Electrical Eng. & Systems 2021-08-03 B. Marinescu , O. Gomis-Bellmunt , F. Dörfler , H. Schulte , L. Sigrist

Recent development in fabrication technology of planar two-dimensional (2D) materials has brought up possibilities of numerous novel applications. Our recent analysis has revealed that by definition of p-n junctions through appropriate…

Mesoscale and Nanoscale Physics · Physics 2014-01-21 B. Gharekhanlou , S. Khorasani , R. Sarvari
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