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Time-resolved Langmuir probe diagnostics at the discharge centerline and at three distances from the target (35mm, 60mm, and 100mm) was carried out during long positive voltage pulses (a duration of 500$\mu$s and a preset positive voltage…

等离子体物理 · 物理学 2024-03-28 Andrea Dagmar Pajdarová , Tomáš Kozák , Tomáš Tölg , Jiří Čapek

Large positive (P) magnetoresistance (MR) has been observed in parallel magnetic fields in a single 2D layer in a delta-doped GaAs/AlGaAs heterostructure with a variable-range-hopping (VRH) mechanism of conductivity. Effect of large PMR is…

无序系统与神经网络 · 物理学 2009-10-31 I. Shlimak , S. I. Khondaker , M. Pepper , D. A. Ritchie

We demonstrate and explain the surprising phenomenon of sign reversal in magnetic field amplification by the laser-driven implosion of a structured target. Relativistically intense laser pulses incident on the outer surface of a microtube…

等离子体物理 · 物理学 2021-02-03 K. Weichman , M. Murakami , A. P. L. Robinson , A. V. Arefiev

The non-linear zero-differential resistance state (ZDRS) that occurs for highly mobile two-dimensional electron systems in response to a dc bias in the presence of a strong magnetic field applied perpendicular to the electron plane is…

其他凝聚态物理 · 物理学 2009-11-13 N. Romero , S. Mchugh , M. P. Sarachik , S. A. Vitkalov , A. A. Bykov

We have studied experimentally the influence of a parallel magnetic field ($B_{//}$) on microwave-induced resistance oscillations (MIRO) and zero-resistance states (ZRS) previously discovered in a high-mobility 2D electron system. We have…

介观与纳米尺度物理 · 物理学 2007-05-23 C. L. Yang , R. R. Du , L. N. Pfeiffer , K. W. West

An experimental investigation on the periodic and chaotic oscillations in a reflex plasma source in presence of magnetic field is presented. The experiment is conducted in a reflex plasma source, consisting of two cathodes and a ring anode.…

等离子体物理 · 物理学 2017-03-16 R. Rane , P. Bandyopadhyay , M. Bandyopadhyay , Gopi Kishan Sabavath , A. N. Sekar Iyengar , S. Mukherjee

Double layers (DLs) have been observed in a plasma reactor composed of a source chamber attached to a larger expanding chamber. Positive ion beams generated across the DL were characterized in the low plasma potential region using retarding…

等离子体物理 · 物理学 2016-12-11 N. Plihon , P. Chabert , C. S. Corr

We investigate the effect of spacetime backreaction on the upper critical magnetic field for s-wave holographic superconductors by using the matching method. The backreaction of the constant external magnetic field and the electric field to…

高能物理 - 理论 · 物理学 2015-03-19 Xian-Hui Ge , Hong-Qiang Leng

The paper considers the dynamics of the plasma generated by the explosive-emission cells of the cathode spot of a vacuum arc in a magnetic field. It is shown that the expansion of the (high-density) plasma in a transverse magnetic field may…

等离子体物理 · 物理学 2019-05-22 M. M. Tsventoukh

The magnetic field is believed to play an important role in at least some core-collapse supernovae if its magnitude reaches $10^{15}\,\rm{G}$, which is a typical value for a magnetar. In the presence of fast rotation, such a strong magnetic…

高能天体物理现象 · 物理学 2020-01-17 M. Bugli , J. Guilet , M. Obergaulinger , P. Cerdá-Durán , M. Á. Aloy

Conjugated polymers exhibit unique spin-dependent phenomena arising from weak yet critical hyperfine interactions. Understanding these spin effects, particularly the spin-dependent formation and decay of correlated spin pairs, is important…

We study laterally trapped dipolar exciton ensembles in coupled GaAs quantum wells at high magnetic fields in the Faraday configuration. In photoluminescence experiments, we identify three magnetic field regimes. At low fields, the exciton…

量子气体 · 物理学 2017-06-28 S. Dietl , K. Kowalik-Seidl , D. Schuh , W. Wegscheider , A. W. Holleitner , U. Wurstbauer

The effect of rotation on the formation of the magnetic dual chiral density wave (\MD) in a dense and magnetized cold quark matter is studied. This phase is supposed to exist in the extreme conditions prevailing, e.g., in a neutron star.…

核理论 · 物理学 2023-10-04 H. Mortazavi Ghalati , N. Sadooghi

While plasma often behaves diamagnetically, we demonstrate that the laser irradiation of a thin opaque target with an embedded target-transverse seed magnetic field $B_\mathrm{seed}$ can trigger the generation of an order-of-magnitude…

等离子体物理 · 物理学 2020-12-02 Kathleen Weichman , Alexander P. L. Robinson , Masakatsu Murakami , Alexey V. Arefiev

The magnetic field topology in the surrounding of neutron stars is one of the key questions in pulsar magnetospheric physics. A very extensive literature exists about the assumption of a dipolar magnetic field but very little progress has…

高能天体物理现象 · 物理学 2015-06-24 Jerome Petri

The effect of electric field, applied on systems in the nanoscale regime has attracted a lot of research in recent times. We highlight some of the recent results in the field of single molecule electronics and then move on to focus on some…

材料科学 · 物理学 2008-10-11 S. Lakshmi , Sudipta Dutta , Swapan K. Pati

High-power impulse magnetron sputtering (HiPIMS) delivers a high target power in short pulses, enhancing the ionization and energy of sputtered atoms and providing thus more possibilities to control the film properties. This study explores…

等离子体物理 · 物理学 2024-12-06 M. Farahani , T. Kozák , A. D. Pajdarová , T. Tölg , J. Čapek

Three-dimensional electron phase space holes are shown to be positive charges on the plasma background which produce a radial electric field and force the trapped electron component into an azimuthal drift. In this way electron holes…

空间物理 · 物理学 2012-04-20 R. A. Treumann , W. Baumjohann

It has been shown in an earlier publication that magnetic field gradients applied to particles in traps can induce Larmor frequency shifts that may falsely be interpreted as electric-dipole moment (EDM) signals. This study has now been…

原子物理 · 物理学 2009-11-11 P. G. Harris , J. M. Pendlebury

The magnetic field is shown to affect significantly non-equilibrium quasiparticle (QP) distributions under conditions of inverse proximity effect on the remarkable example of a single-electron hybrid turnstile. This effect suppresses the…

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