Results 81 to 90 of about 2,827,182 (371)

Emergent Magnetic Structures at the 2D Limit of the Altermagnet MnTe

Advanced Functional Materials, EarlyView.
Renewed interest in MnTe has emerged due to its intriguing altermagnetism, a newly identified form of magnetism distinct from conventional ferro‐, antiferro‐, or paramagnetism. By combining magnetic X‐ray absorption spectroscopy, scanning tunnelling microscopy, and first‐principles theory, this study reveals that thinning MnTe to the 2D limit ...
Marc G. Cuxart, Roberto Robles, Beatriz Muñiz Cano, Pierluigi Gargiani, Clara Rebanal, Iolanda Di Bernardo, Alireza Amiri, Fabián Calleja, Manuela Garnica, Miguel A. Valbuena, Amadeo L. Vázquez de Parga   +10 more
wiley   +1 more source

Unprecedented Spin‐Lifetime of Itinerant Electrons in Natural Graphite Crystals

Advanced Functional Materials, EarlyView.
Graphite exhibits extraordinary spintronic potential, with electron spin lifetimes reaching 1,000 ns at room temperature ‐ over 100 times longer than graphene‐based devices. Magnetic resonance spectroscopy reveals strong anisotropy: out‐of‐plane spins live 50 times longer than their in‐plane counterparts.
Bence G. Márkus, Dávid Beke, Lili Vajtai, András Jánossy, László Forró, Ferenc Simon   +5 more
wiley   +1 more source

Extragalactic Radio Continuum Surveys and the Transformation of Radio Astronomy

, 2017
Next-generation radio surveys are about to transform radio astronomy by discovering and studying tens of millions of previously unknown radio sources.
A Aniyan, A Dabbech, A Maini, A Raccanelli, A Sandage, AM Hopkins, AR Offringa, AS Bennett, B McKinley, B Sartoris, BC Lacki, BHC Emonts, BL Fanaroff, BM Gaensler, BS Koribalski, BW Holwerda, BY Mills, BY Mills, C Blake, C Bonnett, CL Carilli, CP O’Dea, D Baron, D Bock, D Fan, D McConnell, Dark Energy Survey Collaboration, DJ Croton, DO Edge, EJ Murphy, FN Owen, G Brunetti, G Colla, G Reber, G Reber, G Swarup, GA Rees, GH Heald, H Röttgering, HT Intema, J Lazio, J Silk, JA Ekers, JG Bolton, JG Bolton, JG Bolton, JJ Condon, JJ Condon, JJ Condon, JJ Condon, JK Banfield, JL Jonas, JR Callingham, JR Shakeshaft, JS Hey, JS Hey, JV Wall, K Schawinski, KG Jansky, KI Kellermann, KI Kellermann, KJ Mitchell, KO Kiepenheuer, L Saripalli, M Bonzini, M Harwit, M Harwit, M Massardi, M Ryle, MD Kistler, MJ Hardcastle, MJL Orr, MP Haarlem van, MY Mao, N Herrera Ruiz, N Hurley-Walker, NM Ball, P Padovani, PAG Scheuer, PC Kruit van der, PD Barthel, PE Dewdney, PF Scott, PJ Napier, PN Best, R Cassano, R Rengelink, RB Wayth, RE Otrupcek, RH Becker, RH Brown, RJ Bouwens, RJ Weeren van, RP Norris, RP Norris, RP Norris, RP Norris, S Camera, S Johnston, SJ Tingay, T Mauch, T Mauch, TM Heckman, TW Shimwell, W Sutherland, WA Baade, WE Wilson, WE Wilson, WL Williams, WT Sullivan   +109 more
core   +1 more source

Self‐Trapped Hole Migration and Defect‐Mediated Thermal Quenching of Luminescence in α‐ and β‐Ga2O3

Advanced Functional Materials, EarlyView.
Temperature‐dependent photoluminescence and first‐principles calculations reveal self‐trapped hole migration as the microscopic origin of thermal quenching in α‐ and β‐Ga2O3. The low migration barrier in α‐Ga2O3 enables defect trapping and enhances blue luminescence, while the higher barrier in β‐Ga2O3 preserves ultraviolet emission at elevated ...
Nima Hajizadeh, Ymir K. Frodason, Clemens Petersen, Benjamin M. Janzen, Luca Sung‐Min Choi, Nils Bernhardt, Felix Nippert, Zbigniew Galazka, Joel B. Varley, Holger von Wenckstern, Lasse Vines, Markus R. Wagner   +11 more
wiley   +1 more source

SOME DEVELOPMENTS IN OBSERVATIONAL AND THEORETICAL SOLAR ASTRONOMY SINCE 1970 [PDF]

, 2021
P. Foukal
openalex   +1 more source

Report of the Science Working Group: Science with a lunar optical interferometer [PDF]

Resolution is the greatest constraint in observational astronomy. The Earth's atmosphere causes on optical image to blur to about 1 arcsec or greater.

core   +1 more source

Thickness‐Dependent Skyrmion Evolution in Fe3GeTe2 During Magnetization Reversal

Advanced Functional Materials, EarlyView.
Thickness‐ and field‐dependent magnetic domain behavior in 2D van der Waals Fe3GeTe2 is studied using Lorentz TEM and micromagnetic simulations. A patch‐like domain phase evolves from skyrmions during magnetization reversal, and step edges between thickness regions act as pinning sites.
Jennifer Garland, John Fullerton, PeiYu Cai, Rabindra Basnet, Santosh Karki Chhetri, Jin Hu, Elton J. G. Santos, Yue Li, Charudatta Phatak, Amanda Petford‐Long   +9 more
wiley   +1 more source

Assessing statistical significance of periodogram peaks

, 2007
The least-squares (or Lomb-Scargle) periodogram is a powerful tool which is used routinely in many branches of astronomy to search for periodicities in observational data.
Lehman E. L., R. V. Baluev, Schwarzenberg-Czerny A., Tee G.   +3 more
core   +1 more source

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

Advanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha, Yingshan Ma, Yong Nam An, Sung‐Un An, Hyeon Hak Jung, Suvi‐Tuuli Varjamo, Jiwon Yoo, Junho Min, Hanvit Kim, Faisal Ahmed, Sang Hoon Chae, Young Min Song, Weiwei Cai, Tawfique Hasan, Zhipei Sun, Dong‐Ho Kang, Hyeon‐Jin Shin, Yunyun Dai, Hoon Hahn Yoon   +18 more
wiley   +1 more source

Impact of Lattice Heterogeneity on Broadband Optical Retardation in Stacked 2D Perovskite Single Crystals

Advanced Functional Materials, EarlyView.
It is shown that interfaces between organic and inorganic layers govern long‐range stacking disorder and in‐plane anisotropy in 2D metal‐halide perovskites. By comparing single‐cation AB‐AB and ordered mixed‐cation ABCD‐ABCD stackings, SCXRD reveals enhanced mosaicity, while optics confirm high birefringence.
Yixuan Dou, Nicholas Nici, Sunhao Liu, Xiaoming Wang, Yanfa Yan, Carla Slebodnick, Lina Quan   +6 more
wiley   +1 more source