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Sheath formation near biased electrodes in magnetic fields parallel to the wall is an understudied topic, especially within the context of Z-pinch fusion experiments. We perform 1X-2V Boltzmann-Poisson simulations of an axial cut at the…

等离子体物理 · 物理学 2026-01-16 C. R. Skolar , B. Srinivasan

The interplay between the electron transport in metal/ferroelectric/metal junctions with ultrathin ferroelectric barriers and the polarization state of a barrier is investigated. Using a model which takes into account screening of…

其他凝聚态物理 · 物理学 2009-11-11 M. Ye. Zhuravlev , R. F. Sabirianov , S. S. Jaswal , E. Y. Tsymbal

The results of experimental and theoretical studies of zero-bias anomaly (ZBA) in the Pb-oxide-n-InAs tunnel structures in magnetic field up to 6T are presented. A specific feature of the structures is a coexistence of the 2D and 3D states…

介观与纳米尺度物理 · 物理学 2009-10-31 G. M. Minkov , A. V. Germanenko , S. A. Negachev , O. E. Rut , Eugene V. Sukhorukov

The distribution of the current density and the profile of the trapped magnetic field of a superconducting disk magnetized by uniform field are calculated from first principles. The effect of the superconducting parameters is taken into…

超导电性 · 物理学 2007-05-23 C Li , J J Wang , C Y He , L F Meng , R s Han , Z X Gao

Precisely engineered tunnel junctions exhibit a long sought effect that occurs when the energy of the electron is comparable to the potential energy of the tunneling barrier. The resistance of metal-insulator-metal tunnel junctions…

材料科学 · 物理学 2007-09-25 Casey W. Miller , Zhi-Pan Li , Ivan K. Schuller , R. W. Dave , J. M. Slaughter , Johan Akerman

Micromagnetic instabilities and non-uniform magnetization states play a significant role in spin transfer induced switching of nanometer scale magnetic elements. Here we model domain wall mediated switching dynamics in perpendicularly…

介观与纳米尺度物理 · 物理学 2021-01-13 Nahuel Statuto , Jamileh Beik Mohammadi , Andrew D. Kent

We report exact results for the Fermi Edge Singularity in the absorption spectrum of an out-of-equilibrium tunnel junction. We consider two metals with chemical potential difference V separated by a tunneling barrier containing a defect,…

凝聚态物理 · 物理学 2009-11-10 B. Muzykantskii , N. d'Ambrumenil , B. Braunecker

The optimum condition of an applied field direction to maximize spin torque diode voltage was theoretically derived for a magnetic tunnel junction with a perpendicularly magnetized free layer and an in-plane magnetized pinned layer. We…

介观与纳米尺度物理 · 物理学 2013-08-07 Tomohiro Taniguchi , Hiroshi Imamura

A detailed study of exchange-biased Fe/MnF2 bilayers using magneto-optical Kerr Effect shows that the magnetization reversal occurs almost fully through domain wall nucleation and propagation for external fields parallel to the exchange…

材料科学 · 物理学 2007-05-23 Elke Arenholz , Kai Liu

We study the sub-gap conductance of a ferromagnetic mesoscopic region attached to a ferromagnetic and a superconducting electrode by means of tunnel junctions. In the absence of the exchange field, the ratio $r= \gamma / \epsilon_T$ of the…

介观与纳米尺度物理 · 物理学 2009-10-31 M. Leadbeater , C. J. Lambert , R. Raimondi , A. F. Volkov

Magnetic tunnel junctions (MTJ) with AlOx barrier were fabricated by a deposition tool called Biased Target Ion Beam Deposition (BTIBD) using low energy ion source (0-50 eV) and voltage biased targets. The BTIBD system applies bias voltage…

材料科学 · 物理学 2009-01-20 Wei Chen , Dao N. H. Nam , Jiwei Lu , Kevin G. West , Stuart A. Wolf

It is shown, that the monotonic part of interlayer electronic conductivity strongly decreases in high magnetic field perpendicular to the conducting layers. We consider only the coherent interlayer tunnelling, and the obtained result…

介观与纳米尺度物理 · 物理学 2011-11-11 P. D. Grigoriev

In the context of graphene-based composite applications, a complete understanding of charge conduction in multilayer reduced graphene oxides (rGO) is highly desirable. However, these rGO compounds are characterized by multiple and different…

Lattice deformations in graphene couple to the low-energy electronic degrees of freedom as effective scalar and gauge fields. Using molecular dynamics simulations, we show that the optical component of the displacement field, i.e., the…

介观与纳米尺度物理 · 物理学 2025-04-11 Christophe De Beule , Robin Smeyers , Wilson Nieto Luna , E. J. Mele , Lucian Covaci

We study theoretically the electron current across a monolayer graphene/hexagonal boron nitride/bilayer graphene tunnelling junction in an external magnetic field perpendicular to the layers. We show that change in effective tunnelling…

介观与纳米尺度物理 · 物理学 2019-02-18 J. J . P. Thompson , D. J. Leech , M. Mucha-Kruczyński

We present experimental and numerical micromagnetic data on the effect of spin momentum transfer in current perpendicular to the plane spin valves. Starting from a configuration with orthogonal free and pinned layer magnetizations, the free…

材料科学 · 物理学 2009-11-10 M. Covington , A. Rebei , G. J. Parker , M. A. Seigler

Gauge-invariant phase difference and critical currents of cross-type Josephson junctions with thin and narrow superconducting strips exposed to three-dimensional magnetic fields are theoretically investigated. When a sandwich-type Josephson…

超导电性 · 物理学 2022-03-29 Yasunori Mawatari

We investigate the dependence of magnetic properties on the post-annealing temperature/time, the thickness of soft ferromagnetic electrode and Ta dusting layer in the pinned electrode as well as their correlation with the tunnel…

The lack of certain crystalline symmetries in strong spin-orbit-coupled non-magnetic materials allows for the existence of uncoventional spin Hall responses, with electrically generated transverse spin currents possessing collinear flow and…

介观与纳米尺度物理 · 物理学 2022-11-01 D. J. P. de Sousa , P. M. Haney , J. P. Wang , Tony Low

By means of sequential and cotunneling spectroscopy, we study the tunnel couplings between metallic leads and individual levels in a carbon nanotube quantum dot. The levels are ordered in shells consisting of two doublets with strong- and…

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