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Meeting the ever increasing demand for transmission capacity in wireless networks will require evolving towards higher regions in the radiofrequency spectrum, reducing cell sizes as well as resorting to more compact, agile and power…

Optics · Physics 2016-12-22 Javier S. Fandiño , Pascual Muñoz , David Doménech , José Capmany

The enhancement of photovoltage and photocurrent of material is fundamentally significant owing to the many interesting phenomena found and the potential applications. However, vast altering of magnitude-orders of photoelectricity has been…

Materials Science · Physics 2015-11-26 Ye Wu , Amar Bhalla , Ruyan Guo

Spin lasers leverage electron spin-polarisation to control photon polarisation, offering the potential for lower thresholds, rapid modulation, and all-optical data processing. We report successful spin injection into a commercial Vertical…

Spin-polarized electron beam sources enable studies of spin-dependent electric and magnetic effects at the nanoscale. We propose a method of creating spin-polarized electrons on an integrated photonics chip by laser driven nanophotonic…

The paper proposes a model of an organic solar cell based on Tamm plasmon polariton localized at the boundary of the active layer doped with plasmon nanoparticles and a multilayer mirror. It is shown that the integral absorption in the…

Applied Physics · Physics 2021-11-05 R. G. Bikbaev , S. Ya. Vetrov , I. V. Timofeev , V. F. Shabanov

Thermophotovoltaics, devices that convert thermal infrared photons to electricity, offer a key pathway for a variety of critical renewable energy technologies including thermal energy storage, waste heat recovery, and direct solar-thermal…

We investigate the influence of a light beam carrying an orbital angular momentum on the current density of an electron wave packet in a semiconductor stripe. It is shown that due to the photo-induced torque the electron density can be…

Optics · Physics 2013-02-19 J. Waetzel , A. S. Moskalenko , J. Berakdar

Topological photonic insulators pave the way toward efficient integrated photonic devices with minimized scattering losses. Optical properties of the majority of topological structures proposed to date are fixed by design such that no…

Optics · Physics 2019-02-01 Mikhail I. Shalaev , Wiktor Walasik , Natalia M. Litchinitser

While microscopic laws of physics are invariant under the reversal of the arrow of time, the transport of energy and information in most devices is an irreversible process. It is this irreversibility that leads to intrinsic dissipations in…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Shuichi Murakami , Naoto Nagaosa , Shou-Cheng Zhang

We study the spin photogalvanic effect in two-dimensional electron system with structure inversion asymmetry by means of the solution of semiconductor optical Bloch equations. It is shown that a linearly polarized light may inject a pure…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Bin Zhou , Shun-Qing Shen

Conversion of thermal energy into magnonic spin currents and/or effective electric polarization promises new device functionalities. A versatile approach is presented here for generating and controlling open circuit magnonic spin currents…

Mesoscale and Nanoscale Physics · Physics 2018-04-04 Xi-guang Wang , L. Chotorlishvili , Guang-hua Guo , J. Berakdar

Light-matter interactions are often considered governed by the electric optical field only, leaving aside the magnetic component of light. However, the magnetic part plays a determining role in many optical processes from light and…

Reconfigurable photonic devices capable of routing the flow of light enable flexible integrated-optic circuits that are not hard-wired but can be externally controlled. Analogous to free-space spatial light modulators, we demonstrate…

To mitigate climate change, our global society is harnessing direct (solar irradiation) and indirect (wind/water flow) sources of renewable electrical power generation. Emerging direct sources include current-producing thermal gradients in…

Mesoscale and Nanoscale Physics · Physics 2019-10-24 K. Katcko , E. Urbain , B. Taudul , F. Schleicher , J. Arabski , E. Beaurepaire , B. Vileno , D. Spor , W. Weber , D. Lacour , S. Boukari , M. Hehn , M. Alouani , J. Fransson , M. Bowen

Chiral nanophotonic devices are promising candidates for chiral molecules sensing, polarization diverse nanophotonics and display technologies. Active chiral nanophotonic devices, where the optical chirality can be controlled by an external…

Photosynthetic materials form the basis of quantum biology. An important attribute of quantum biology is correlation and coherence of spin states. Such correlated spin states are targets of static magnetic field. In this paper, we report…

Biomolecules · Quantitative Biology 2017-06-28 Abhishek Bhattacharya , Sufi O Raja , Md. A Ahmed , Sudip Bandyopadhyay , Anjan Kr. Dasgupta

The photosystem II reaction centre is the photosynthetic complex responsible for oxygen production on Earth. Its water splitting function is particularly favoured by the formation of a stable charge separated state via a pathway that starts…

Biological Physics · Physics 2017-07-18 Richard Stones , Hoda Hossein-Nejad , Rienk van Grondelle , Alexandra Olaya-Castro

We study the thermoelectric response of a device containing a pair of helical edge states contacted at the same temperature $T$ and chemical potential $\mu$ and connected to an external reservoir, with different chemical potential and…

Strongly Correlated Electrons · Physics 2018-11-28 P. Roura-Bas , Liliana. Arrachea , Eduardo Fradkin

We present new mechanism for manipulation of the spin-wave amplitude through the use of the dynamic charge-mediated magnetoelectric effect in ultrathin multilayers composed of dielectric thin-film capacitors separated by a ferromagnetic…

Mesoscale and Nanoscale Physics · Physics 2020-01-22 Piotr Graczyk , Maciej Krawczyk

Controlling the flow of light within complex and dynamic environments is essential for a wide range of applications, from deep-tissue imaging and optogenetics to precision phototherapy. Typically, such light flows are controlled using…

Optics · Physics 2026-03-03 Seung Yeol Lee , Yujie Luo , Ognjen Ilic