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Our recent arXiv preprints have described the experimental evidence for the universal occurrence of short circuit photocurrents on illumination of solid state surfaces by strongly absorbed light. A likely mechanism has been proposed based…

材料科学 · 物理学 2008-05-02 Mladen Georgiev

A metamaterial formed by superconducting circuits or quantum dots can serve as active lasing medium when coupled to a microwave resonator. For these artificial atoms, in contrast to real atoms, variations in their parameters cannot be…

介观与纳米尺度物理 · 物理学 2016-06-15 Martin Koppenhöfer , Michael Marthaler , Gerd Schön

We present a new dispersion relation for photons that are nonlinearly interacting with a radiation gas of arbitrary intensity due to photon-photon scattering. It is found that the photon phase velocity decreases with increasing radiation…

高能物理 - 唯象学 · 物理学 2008-11-26 M. Marklund , P. K. Shukla , B. Eliasson

We report the observation and systematic investigation of the space charge effect and mirror charge effect in photoemission spectroscopy. When pulsed light is incident on a sample, the photoemitted electrons experience energy redistribution…

强关联电子 · 物理学 2007-05-23 X. J. Zhou , B. Wannberg , W. L. Yang , V. Brouet , Z. Sun , J. F. Douglas , D. Dessau , Z. Hussain , Z. -X. Shen

We discuss possible origins of recently discovered microwave induced photoresistance oscillations in very-high-electron-mobility two-dimensional electron systems. We show that electrodynamic effects -- the radiative decay, plasma…

介观与纳米尺度物理 · 物理学 2009-11-10 S. A. Mikhailov

Photons traveling cosmological distances through the inhomogeneous Universe experience a great variation in their in-medium induced effective mass. Using the EAGLE suite of hydrodynamical simulations, we infer the free electron distribution…

宇宙学与河外天体物理 · 物理学 2020-10-14 Andres Aramburo Garcia , Kyrylo Bondarenko , Sylvia Ploeckinger , Josef Pradler , Anastasia Sokolenko

For some time, the MILC Collaboration has been studying electromagnetic effects on light mesons. These calculations use fully dynamical QCD, but only quenched photons, which suffices to NLO in XPT. That is, the sea quarks are electrically…

The influence of the Hall voltage on the photoluminescence of a dense hydrodynamic electron-hole plasma laser generated in a mesoscopic n-doped GaAs channel under intense laser excitation is studied. Laser excitation induces an interband…

介观与纳米尺度物理 · 物理学 2026-05-19 Yu. A. Pusep , M. A. T. Patricio , G. M. Jacobsen , M. D. Teodoro , G. M. Gusev , A. K. Bakarov

Phenomena such as pulsar frequency glitches are believed to be attributable to differential rotation of a current of ``free'' superfluid neutrons at densities above the ``drip'' threshold in the ionic crust of a neutron star. Such relative…

天体物理学 · 物理学 2010-11-11 Brandon Carter , Nicolas Chamel , Pawel Haensel

We theoretically investigate bulk photovoltaic effects, with a specific focus on shift-current and injection-current. Initially, we perform a numerical analysis of the direct current (dc) induced by a laser pulse with a one-dimensional…

材料科学 · 物理学 2023-10-16 Shunsuke A. Sato , Angel Rubio

Charged particles scattering on moving inhomogenities of the magnetised interstellar medium can gain energy through the process of second-order Fermi acceleration. This energy gain depletes in turn the magnetic wave spectrum around the…

高能天体物理现象 · 物理学 2020-10-14 M. Kachelriess , J. Tjemsland

The role of momentum transfer (``radiation pressure'') due to an internal source of ionizing radiation for the formation of baryonic structures is investigated. Fully-ionized self-gravitating gaseous objects can be radiation-pressure…

天体物理学 · 物理学 2015-06-24 Martin G. Haehnelt

A linearly polarized light normally incident on a semiconductor quantum well with spin-orbit coupling may generate pure spin current via direct interband optical transition. An electric photocurrent can be extracted from the pure spin…

介观与纳米尺度物理 · 物理学 2011-04-04 Hai-Zhou Lu , Bin Zhou , Fu-Chun Zhang , Shun-Qing Shen

The theory of electromagnetic in nature new component of electrical current is suggested. In classical physics approximations for the cases of the free electron plasmas in semi-conductive media, the atom or molecular electrons of liquids…

综合物理 · 物理学 2009-08-12 P. M. Mednis

Quantitative investigation on the current-induced torque in antiferromagnets represents a great challenge, due to the lack of an independent method for controlling N\'eel vectors. Here by utilizing an antiferromagnetic insulator with…

介观与纳米尺度物理 · 物理学 2019-12-18 Pengxiang Zhang , Joseph Finley , Taqiyyah Safi , Luqiao Liu

In the standard model of particle physics, photons are mass-less particles with a particular dispersion relation. Tests of this claim at different scales are both interesting and important. Experiments in territory labs and several…

宇宙学与河外天体物理 · 物理学 2014-06-09 Lei Qian

Laser accelerators can provide proton beams with unique qualities, such as micron size, picosecond pulse duration and high peak current, and have been demonstrated for various applications and for scientific research purposes. The effect of…

加速器物理 · 物理学 2022-12-06 Zhu Jungao , Zhao Yuan , Lai Meifu , Gu Yongli , Xu Shixiang , Zhou Cangtao , Lu Haiyang

As is known the repulsion of the volume elements of an uniformly accelerating charge or a charge supported in an uniform gravitational field accounts for the electromagnetic contribution to the charge's inertial and gravitational mass,…

综合物理 · 物理学 2012-07-30 Vesselin Petkov

It is shown that the current-induced torques between a ferromagnetic layer and an antiferromagnetic layer with a compensated interface vanish when the ferromagnet is aligned with an axis of spin-rotation symmetry of the antiferromagnet. For…

介观与纳米尺度物理 · 物理学 2013-11-26 Karthik Prakya , Adrian Popescu , Paul M. Haney

Photon mass and Cartan contortion bounds recently obtained from tiny Lorentz violation observations in cosmology are used to find a limit of ${\lambda}\le 10^{-4}{\alpha}$ for the massive photon-torsion dimensionless coupling. Here…

天体物理学 · 物理学 2007-05-23 L. C. Garcia de Andrade