Results 41 to 50 of about 152,468 (288)

Gate-tunable circular phonon dichroism effect in bilayer graphene

iScience
Summary: Circular phonon dichroism effect has been proposed in two-dimensional materials; however, the lack of tunability hinders the exploration of the effect.
Wen-Yu Shan
doaj   +1 more source

Oscillatory surface dichroism of an insulating topological insulator Bi2Te2Se

, 2013
Using circular dichroism-angle resolved photoemission spectroscopy (CD-ARPES), we report a study of the effect of angular momentum transfer between polarized photons and topological surface states on the surface of highly bulk insulating topological ...
Alidoust, N., Bansil, A., Basak, S., Belopolski, I., Bian, G., Bissen, M., Cava, R. J., Durakiewicz, T., Hasan, M. Z., Ji, H., Jia, S., Lin, H., Liu, Chang, Mo, S. -K., Neupane, M., Ong, N. P., Severson, M., Xiong, J., Xu, S. -Y.   +18 more
core   +1 more source

Domain Wall Rebounds Driven by Competing Entropic and Spin‐Transfer Torques in Cylindrical Nanowires

Advanced Functional Materials, EarlyView.
Domain‐wall motion in cylindrical magnetic nanowires driven by nanosecond current pulses. Low current densities efficiently displace domain walls, whereas higher currents cause rebound at the wire ends. The effect results from the interplay between spin‐transfer torque and thermally induced processes, highlighting the role of thermal gradients in ...
Elias Saugar, Jorge Marqués‐Marchán, Sara Catalano, Agustina Asenjo, Michael Foerster, Miguel Angel Niño, Manuel Vazquez, Fèlix Casanova, Arantxa Fraile Rodríguez, Rafael P. Del Real, Oksana Chubykalo‐Fesenko, Cristina Bran   +11 more
wiley   +1 more source

Emitter-site selective photoelectron circular dichroism of trifluoromethyloxirane [PDF]

, 2017
The angle-resolved inner-shell photoionization of R-trifluoromethyloxirane, C3H3F3O, is studied experimentally and theoretically. Thereby, we investigate the photoelectron circular dichroism (PECD) for nearly-symmetric O 1s and F 1s electronic orbitals ...
Artemyev, A. N., Coffee, R. N., Demekhin, Ph. V., Ehresmann, A., Hartmann, G., Ilchen, M., Knie, A., Li, Z., Moeller, S., Ogasawara, H., Ohldag, H., Osipov, T., Ray, D., Rupprecht, P., Schmidt, Ph., Wolf, T. J. A.   +15 more
core   +1 more source

DNA‐Origami‐Assembled Rhodium Nanoantennas for Deep‐UV Label‐Free Single‐Protein Detection

Advanced Functional Materials, EarlyView.
Deep‐UV autofluorescence of single proteins in DNA origami‐based rhodium nanoantennas. Precisely positioned within the plasmonic nanogap, proteins retain their native state while their intrinsic emission is strongly amplified, enabling label‐free single‐molecule detection and opening new opportunities for highly sensitive and specific biosensing ...
Nicco Corduri, Malavika Kayyil Veedu, Yifan Yu, Yanqiu Zou, Jie Liu, Denis Garoli, Guillermo P. Acuna, Jérôme Wenger, Karol Kołątaj   +8 more
wiley   +1 more source

Realizing electronically reconfigurable intrinsic chirality: from no absorption to maximal absorption of any desirable spin

Nanophotonics
Circular dichroism – the spin-selective absorption of light – finds diverse applications in medicine, antennas and microwave devices. In this work, we propose and experimentally demonstrate an ultrathin electronically reconfigurable chiral metasurface ...
Khan Muhammad Ismail, Khan Tayyab Ali, Abdelbaky Moustafa, Wong Alex M. H.   +3 more
doaj   +1 more source

Evaluation of Molecular Polarizability and of Intensity Carrying Modes Contributions in Circular Dichroism Spectroscopies

Applied Sciences, 2019
We re-examine the theory of electronic and vibrational circular dichroism spectroscopy in terms of the formalism of frequency-dependent molecular polarizabilities.
Chiara Zanchi, Giovanna Longhi, Sergio Abbate, Giovanni Pellegrini, Paolo Biagioni, Matteo Tommasini   +5 more
doaj   +1 more source

Dichroism Effects in the Ionization of Polarized Atoms by Short Circularly Polarized Laser Pulses

Photonics, 2023
The dichroism effects, i.e., asymmetries of the ionization probability with respect to the inversion of either the atomic orientation (magnetic dichroism, MD) or the circular polarization degree of the photon beam (circular dichroism, CD), are ...
Alexei V. Meremianin, Nikolai L. Manakov
doaj   +1 more source

Detecting fractional Chern insulators through circular dichroism

, 2019
Great efforts are currently devoted to the engineering of topological Bloch bands in ultracold atomic gases. Recent achievements in this direction, together with the possibility of tuning inter-particle interactions, suggest that strongly-correlated ...
Goldman, Nathan, Repellin, Cécile
core   +1 more source

Observation of magnetic circular dichroism in Fe L_{2,3} x-ray-fluorescence spectra [PDF]

, 1993
We report experiments demonstrating circular dichroism in the x-ray-fluorescence spectra of magnetic systems, as predicted by a recent theory. The data, on the L_{2,3} edges of ferromagnetic iron, are compared with fully relativistic local spin density ...
A. Lebugle, B. L. Gyorffy, B. T. Thole, C. F. Hague, C. T. Chen, D. P. Craig, G. Schütz, G. van der Laan, H. Ebert, H. Ebert, J-M. Mariot, J. L. Erskine, N. V. Smith, P. J. Durham, P. Strange, P. Strange, P. Strange, P. Strange, S. Imada, S. P. Collins, W. Heitler   +20 more
core   +1 more source