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Related papers: Pulse-width and Temperature Dependence of Memristi…

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Here, we present a detailed study on the temperature and angular dependence of the Shubnikov-de-Haas (SdH) effect in the semi-metal WTe$_2$. This compound was recently shown to display a very large non-saturating magnetoresistance which was…

Materials Science · Physics 2015-10-05 D. Rhodes , S. Das , Q. R. Zhang , B. Zeng , N. R. Pradhan , N. Kikugawa , E. Manousakis , L. Balicas

We return to the question of how the choice of stabilizer generators affects the preservation of information on structures whose degenerate ground state encodes a classical redundancy code. Controlled-not gates are used to transform the…

Quantum Physics · Physics 2015-05-19 Yu Tomita , C. Ricardo Viteri , Kenneth R. Brown

We use three-terminal magnetic tunnel junctions (MTJs) designed for field-free switching by spin-orbit torques (SOTs) to systematically study the impact of dual voltage pulses on the switching performances. We show that the concurrent…

Mesoscale and Nanoscale Physics · Physics 2021-06-03 Viola Krizakova , Eva Grimaldi , Kevin Garello , Giacomo Sala , Sebastien Couet , Gouri Sankar Kar , Pietro Gambardella

This paper investigates the impact of thermal stability relaxation in double-barrier magnetic tunnel junctions (DMTJs) for energy-efficient spin-transfer torque magnetic random access memories (STT-MRAMs) operating at the liquid nitrogen…

Emerging Technologies · Computer Science 2022-05-10 Esteban Garzón , Raffaele De Rose , Felice Crupi , Lionel Trojman , Adam Teman , Marco Lanuzza

We present a theory to study the temperature-dependent behavior of surface states in a ferromagnetic semi-infinite crystal. Our approach is based on the single-site approximation for the \emph{s-f} model. The effect of the semi-infinite…

Disordered Systems and Neural Networks · Physics 2009-11-13 Alireza Saffarzadeh

Direct electronic structure measurements of a variety of the colossal magnetoresistive oxides show the presence of a pseudogap at the Fermi energy E_F which drastically suppresses the electron spectral function at E_F. The pseudogap is a…

Strongly Correlated Electrons · Physics 2016-08-31 T. Saitoh , D. S. Dessau , Y. Moritomo , T. Kimura , Y. Tokura , N. Hamada

We investigated the low temperature performance of CoFeB/MgO based perpendicular magnetic tunnel junctions (pMTJs) by characterizing their quasi-static switching voltage, high speed pulse write error rate and endurance down to 9 K. pMTJ…

Mesoscale and Nanoscale Physics · Physics 2020-01-29 Lili Lang , Yujie Jiang , Fei Lu , Cailu Wang , Yizhang Chen , Andrew D. Kent , Li Ye

As CMOS technologies face challenges in dimensional and voltage scaling, the demand for novel logic devices has never been greater, with spin-based devices offering scaling potential, at the cost of significantly high switching energies.…

Using analytical arguments and the numerical renormalization group method we investigate the spin-thermopower of a quantum dot in a magnetic field. In the particle-hole symmetric situation the temperature difference applied across the dot…

Mesoscale and Nanoscale Physics · Physics 2012-02-24 Tomaz Rejec , Rok Zitko , Jernej Mravlje , Anton Ramsak

We theoretically describe the charge ordering (CO) metal-insulator transition based on a quasi-one-dimensional extended Hubbard model, and investigate the finite temperature ($T$) properties across the transition temperature, $T_{\rm CO}$.…

Strongly Correlated Electrons · Physics 2015-05-18 Hideo Yoshioka , Masahisa Tsuchiizu , Yuichi Otsuka , Hitoshi Seo

The temperature dependence of phonon-induced resistance oscillations has been investigated in two-dimensional electron system with moderate mobility at large filling factors at temperature range T = 7.4 - 25.4 K. The amplitude of…

Mesoscale and Nanoscale Physics · Physics 2010-01-18 A. A. Bykov , A. V. Goran

We provide optical reflectivity data collected over a broad spectral range and as a function of temperature on the ErTe$_3$ and HoTe$_3$ materials, which undergo two consecutive charge-density-wave (CDW) phase transitions at $T_{CDW1}$= 265…

Strongly Correlated Electrons · Physics 2015-05-18 F. Pfuner , P. Lerch , J. -H. Chu , H. -H. Kuo , I. R. Fisher , L. Degiorgi

We present numerically exact inchworm quantum Monte Carlo results for the real-time dynamics of the spin polarization in the sub-Ohmic spin-boson model at finite temperature. We focus in particular on the localization and coherence behavior…

Strongly Correlated Electrons · Physics 2026-03-31 Olga Goulko , Hsing-Ta Chen , Moshe Goldstein , Guy Cohen

The electrical and thermo-electrical transport effects of the TaAs$_2$ semimetal were measured in a magnetic field applied along [-2 0 1] direction. The resulting field dependences of the resistivity as well as the Hall, Seebeck and Nernst…

We use a previously proposed theory for the temperature dependence of tunneling magnetoresistance to shed light on ongoing efforts to optimize spin valves. First we show that a mechanism in which spin valve performance at finite…

Mesoscale and Nanoscale Physics · Physics 2014-09-11 Karin Everschor-Sitte , Matthias Sitte , Allan H. MacDonald

We report a memristive switching effect in the Pt/CuOx/Si/Pt devices prepared by rf sputtering technique at room temperature. Different from other Cu-based switching systems, the devices show a non-filamentary switching effect. A gradual…

Materials Science · Physics 2013-07-23 L. L. Wei , D. S. Shang , J. R. Sun , S. B. Lee , Z. G. Sun , B. G. Shen

Spin-lattice dynamics is used to study the magnetic properties of Fe foams. The temperature dependence of the magnetization in foams is determined as a function of the fraction of surface atoms in foams, nsurf. The Curie temperature of…

We derive a simple system of equations to describe the magnetization relaxation of a molecular spin in weak interaction with a thermal bath for the whole temperature domain. Using this for the intermediate temperature domain where the…

Materials Science · Physics 2022-12-27 Le Tuan Anh Ho , Liviu Ungur , Liviu F. Chibotaru

Continuously graded ferromagnetic thin films represent a new class of magnonic materials, where a spin-wave resonance spectrum can be tuned in resonance frequencies/fields, number of modes and even dispersion law by the magnetic properties…

Materials Science · Physics 2024-11-26 Igor Yanilkin , Amir Gumarov , Bulat Gabbasov , Roman Yusupov , Lenar Tagirov

This article reports temperature-dependent measurements of longitudinal spin Seebeck effects (LSSEs) in Pt/Y$_3$Fe$_5$O$_{12}$ (YIG)/Pt systems in a high temperature range from room temperature to above the Curie temperature of YIG. The…

Materials Science · Physics 2015-05-28 Ken-ichi Uchida , Takashi Kikkawa , Asuka Miura , Junichiro Shiomi , Eiji Saitoh