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Fast magnetic fluctuations due to thermal torques have useful technological functionality ranging from cryptography to probabilistic computing. The characteristic time of fluctuations in typical uniaxial anisotropy magnets studied so far is…

Mesoscale and Nanoscale Physics · Physics 2019-12-04 Jan Kaiser , Avinash Rustagi , Kerem Y. Camsari , Jonathan Z. Sun , Supriyo Datta , Pramey Upadhyaya

We analyze the dynamics of N interacting spins (quantum register) collectively coupled to a thermal environment. Each spin experiences the same environment interaction, consisting of an energy conserving and an energy exchange part. We find…

Mathematical Physics · Physics 2009-11-13 M. Merkli , G. P. Berman , I. M. Sigal

In magnetic memory and logic devices, a magnet's magnetization is usually flipped with a spin polarized current delivering a spin transfer torque (STT). This mode of switching consumes too much energy and considerable energy saving can…

Mesoscale and Nanoscale Physics · Physics 2015-03-17 Kuntal Roy , Supriyo Bandyopadhyay , Jayasimha Atulasimha

Heat spontaneously flows from hot to cold in standard thermodynamics. However, the latter theory presupposes the absence of initial correlations between interacting systems. We here experimentally demonstrate the reversal of heat flow for…

In this paper, we propose Energy-efficient Adaptive Scheme for Transmission (EAST) in WSNs. EAST is IEEE 802.15.4 standard compliant. In this approach, open-loop is used for temperature-aware link quality estimation and compensation.…

Networking and Internet Architecture · Computer Science 2016-11-17 M. Tahir , N. Javaid , Z. A. Khan , U. Qasim , M. Ishfaq

In this paper, we design, analyze, and numerically validate positive and energy-dissipating schemes for solving the time-dependent multi-dimensional system of Poisson-Nernst-Planck (PNP) equations, which has found much use in the modeling…

Numerical Analysis · Mathematics 2020-02-24 Hailiang Liu , Wumaier Maimaitiyiming

Adaptive physical and biological systems continually process fluctuating information from their environments. When the environment is nonstationary, inference itself becomes a nonequilibrium process with thermodynamic cost. We analyse a…

Statistical Mechanics · Physics 2026-03-23 Aditya Gupta

Increasing research efforts have been made to improve the energy efficiency of variable impedance actuators (VIAs) through reduction of energy consumption. However, the harvesting of dissipated energy in such systems remains underexplored.…

Systems and Control · Computer Science 2018-10-29 Fan Wu , Matthew Howard

We proposed a new mechanism of LENR: cooperative processes in whole system -- nuclei+atoms+condensed matter can occur at smaller threshold energies then corresponding ones on free constituents. The cooperative processes can be induced and…

General Physics · Physics 2025-02-08 F. A. Gareev , I. E. Zhidkova

Applications of magnetic memory devices greatly benefit from ultra-fast, low-power switching. Here we propose how this can be achieved efficiently in a nano-sized synthetic antiferromagnet by using perpendicular-to-the-plane…

Mesoscale and Nanoscale Physics · Physics 2016-04-06 B. C. Koop , T. Descamps , V. Korenivski

Single-electron pumps based on tunable-barrier quantum dots are the most promising candidates for a direct realization of the unit ampere in the recently revised SI: they are simple to operate and show high precision at high operation…

Mesoscale and Nanoscale Physics · Physics 2022-05-24 Frank Hohls , Vyacheslavs Kashcheyevs , Friederike Stein , Tobias Wenz , Bernd Kaestner , Hans W. Schumacher

The negative differential thermal conductance (NDTC) provides the key mechanism for realizing thermal transistors. This exotic effect has been the object of an extensive theoretical investigation, but the implementation is still limited to…

Mesoscale and Nanoscale Physics · Physics 2023-04-17 Shobhit Saheb Dey , Giuliano Timossi , Luigi Amico , Giampiero Marchegiani

Phase change memory (PCM) is one of the leading candidates for neuromorphic hardware and has recently matured as a storage class memory. Yet, energy and power consumption remain key challenges for this technology because part of the PCM…

Mesoscale and Nanoscale Physics · Physics 2021-09-20 Keren Stern , Nicolás Wainstein , Yair Keller , Christopher M. Neumann , Eric Pop , Shahar Kvatinsky , Eilam Yalon

Recently, thermal switching has been extensively studied because it is a key component for thermal management in electronic devices. Here, we show a huge magneto-thermal-switching ratio (MTSR) in pure Nb at temperatures lower than its…

Materials Science · Physics 2023-03-15 Miku Yoshida , Md. Riad Kasem , Aichi Yamashita , Ken-ichi Uchida , Yoshikazu Mizuguchi

The increasing integration of power electronic devices is driving the development of more advanced tools and methods for the modeling, analysis, and control of modern power systems to cope with the different time-scale oscillations. In this…

Systems and Control · Electrical Eng. & Systems 2019-10-22 Umberto Biccari , Noboru Sakamoto , Eneko Unamuno , Danel Madariaga , Enrique Zuazua , Jon Andoni Barrena

Desirably, the world relies on the devices being compact, as they could drive to the increased functionality of integrated circuits at the provided footstep, that is becoming more reliable. To reduce the scalability over the devices,…

Materials Science · Physics 2024-01-30 Lephe S , Gifrin Fredik Raj S , Abijesh Euphrine A , Janaki S , Jamina C , Arun Jose L

An increasing penetration of renewable generation has led to reduced levels of rotational inertia and damping in the system. The consequences are higher vulnerability to disturbances and deterioration of the dynamic response of the system.…

Optimization and Control · Mathematics 2020-05-25 Ashwin Venkatraman , Uros Markovic , Dmitry Shchetinin , Evangelos Vrettos , Petros Aristidou , Gabriela Hug

We investigate the stochastic dynamics of nanoscale perpendicular magnetic tunnel junctions (pMTJs) and the correlations that arise when they are electrically coupled. Individual junctions exhibit thermally activated spin-transfer torque…

Mesoscale and Nanoscale Physics · Physics 2026-02-04 Dairong Chen , Ahmed Sidi El Valli , Jonathan Z. Sun , Flaviano Morone , Dries Sels , Andrew D. Kent

We consider a system of two linear and linearly coupled oscillators with ideal impact constraints. Primary resonant energy exchange is investigated by analysis of the slow-flow using the action-angle (AA) formalism. Exact inversion of the…

Chaotic Dynamics · Physics 2018-08-15 Nathan Perchikov , O. V. Gendelman

We apply the thermal (imaginary time) perturbative expansion to the relevant effective field theory to compute characteristics of the phase transition to the ordered state which can occur at low temperatures in the gas of (nonrelativistic)…

Quantum Gases · Physics 2023-09-27 Oskar Grocholski , Piotr H. Chankowski