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相关论文: Effect of Joule heating in current-driven domain w…

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We present a theoretical study of heat transport in electrically insulating ferromagnetic wires containing a domain wall. In the regime of validity of continuum micromagnetism a domain wall is found to have no effect on the heat…

介观与纳米尺度物理 · 物理学 2012-09-07 Peng Yan , Gerrit E. W. Bauer

Effects of ballistic transport on the temperature profiles and thermal resistance in nanowires are studied. Computer simulations of nanowires between a heat source and a heat sink have shown that in the middle of such wires the temperature…

介观与纳米尺度物理 · 物理学 2024-07-01 R. Meyer , Graham W. Gibson , Alexander N. Robillard

Heated pipe flow is widely used in thermal engineering applications, but the presence of buoyancy force can cause intermittency, or multiple flow states at the same parameter values. Such changes in the flow lead to substantial changes in…

流体动力学 · 物理学 2025-01-22 Shijun Chu , Elena Marensi , Ashley P. Willis

Scanning superconducting quantum interference device measurements reveal large-scale modulations of the superfluid density and the critical temperature in superconducting Nb, NbN, and underdoped $YBa_{2}Cu_{3}O_{7-{\delta}}$ films deposited…

超导电性 · 物理学 2017-04-26 Shai Wissberg , Beena Kalisky

Of the new types of cryoelectronic devices under development, including phase shifters, giant magnetoresistance switches, diodes, transistors, and memory cells, some are based on hybrid superconductor-normal metal or…

介观与纳米尺度物理 · 物理学 2015-12-07 L. S. Uspenskaya , S. V. Egorov

The current-driven domain wall motion along two exchange-coupled ferromagnetic layers with perpendicular anisotropy is studied by means of micromagnetic simulations and compared to the conventional case of a single ferromagnetic layer. Our…

介观与纳米尺度物理 · 物理学 2018-01-24 Oscar Alejos , Victor Raposo , Luis Sanchez-Tejerina , Riccardo Tomasello , Giovanni Finocchio , Eduardo Martinez

We report on the first experimental visualization of domain structure in films of weakly ferromagnetic Cu$_{0,47}$Ni$_{0,53}$ alloy with different thickness at liquid helium temperatures. Improved high-resolution Bitter decoration technique…

In addition to the double phase transition (with the Curie temperatures T_C=300K and T_{Ct}=144K), a low-temperature anomaly in the dependence of the magnetization is observed in the bulk magnetic graphite (with an average granular size of…

The Hall conductivity in the magnetic-field-induced spin-density-wave (FISDW) state of the quasi-one-dimensional organic conductors (TMTSF)$_2$X at a finite temperature is calculated. The temperature dependence of the Hall conductivity is…

凝聚态物理 · 物理学 2007-05-23 Hsi-Sheng Goan , Victor M. Yakovenko

I numerically analyze Joule heating in large Bi2212 mesas while taking into account typical thermal conductivities and their temperature dependencies of all the materials involved in the heat dissipation and its removal. Such mesas are used…

超导电性 · 物理学 2010-05-18 A. Yurgens

We have prepared magnetic graphite samples bombarded by protons at low temperatures and low fluences to attenuate the large thermal annealing produced during irradiation. An overall optimization of sample handling allowed us to find Curie…

强关联电子 · 物理学 2009-11-13 J. Barzola-Quiquia , P. Esquinazi , M. Rothermel , D. Spemann , T. Butz , N. García

We present the first systematic experimental validation of return-current-driven implosion scaling in micrometer-sized wires irradiated by femtosecond laser pulses. Employing XFEL-based imaging with sub-micrometer spatial and femtosecond…

The thermal spin-wave distribution in a Ni81Fe19 stripe with an asymmetric transverse domain wall has been investigated using Brillouin light scattering microscopy. Clear evidence has been found that the existence of the domain wall…

材料科学 · 物理学 2009-11-13 C. W. Sandweg , S. J. Hermsdoerfer , H. Schultheiss , S. Schaefer , B. Leven , B. Hillebrands

Thermal transport behavior in silicene nanotubes has become more important due to the application of these promising nanostructures in the engineering of next-generation nanoelectronic devices. We apply non-equilibrium molecular dynamics…

计算物理 · 物理学 2019-06-13 Maryam Khalkhali , Farhad Khoeini , Ali Rajabpour

Considerable efforts have been devoted recently to synthesize diluted magnetic semiconductors having ferromagnetic properties at room temperature because of their technological impacts for spintronic devices. In 2001 successful growth of…

Thermal conductivity is a critical material property in numerous applications, such as those related to thermoelectric devices and heat dissipation. Effectively modulating thermal conductivity has become a great concern in the field of heat…

We report the temperature dependence of the transport critical current density (Jc) in textured Sr1-xKxFe2As2/Fe (Sr122) tapes fabricated by an ex situ powder-in-tube process. Critical currents were measured in magnetic fields up to 0-15 T…

We report on time-resolved and steady-state photoluminescence studies of GaAs/AlGaAs V-groove quantum wire structures. Steady-state photoluminescence experiments are performed in the temperature range from 8K to 200K. We evaluate the…

材料科学 · 物理学 2015-06-25 D. Y. Oberli , F. Vouilloz , R. Ambigapathy , B. Deveaud , E. Kapon

1T-TaS$_2$ exhibits several resistivity phases due to the modulation of charge density wave (CDW). The fact that such phase transition can be driven electrically has attracted a lot of attention in the recent past towards…

材料科学 · 物理学 2023-07-21 Mehak Mahajan , Kausik Majumdar

We present analysis of 17,043 proton kinetic-scale current sheets collected over 124 days of Wind spacecraft measurements in the solar wind at 11 Samples/s magnetic field resolution. The current sheets have thickness $\lambda$ from a few…

空间物理 · 物理学 2022-03-02 Ivan Y. Vasko , Kazbek Alimov , Tai Phan , Stuart D. Bale , Forrest Mozer , Anton V. Artemyev
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