Results 61 to 70 of about 2,720 (178)

Robust Interlayer Exciton Interplay in a Twisted van der Waals Heterotrilayer on a Broadband Bragg Reflector up to Room Temperature

Advanced Functional Materials, Volume 36, Issue 62, 3 August 2026.
In this work, we highlight a unique material platform capable of producing three distinct room temperature (RT) photoluminescence (PL) resonances from spatially separated regions composed of a heterobilayer (HBL), a homobilayer (HoBL), and an heterotrilayer (HTL) transition metal dichalcogenide (TMD) heterostructures configuration on a highly ...
Bhabani Sankar Sahoo, Shachi Machchhar, Avijit Barua, Martin Podhorský, Seth Ariel Tongay, Takashi Taniguchi, Kenji Watanabe, Chirag Chandrakant Palekar, Stephan Reitzenstein   +8 more
wiley   +1 more source

Excitonic Theory of the Ultrafast Optical Response of 2D‐Quantum‐Confined Semiconductors at Elevated Densities

Advanced Quantum Technologies, Volume 9, Issue 6, June 2026.
In this work, an excitonic many‐body theory for the ultrafast optical response at elevated excitation densities for Wannier–Mott excitons is developed and applied to two distinct materials (GaAs quantum well and MoSe2 monolayer) as proponents of two different Coulomb‐interaction regimes.
Henry Mittenzwey, Oliver Voigt, Andreas Knorr   +2 more
wiley   +1 more source

The massive hot subdwarf binary LAMOST J065816.72+094343.1

Astronomy & Astrophysics
Context. Massive short-period binaries involving hot subdwarf stars (sdO/Bs) are rare but very relevant to constraining pathways for binary star evolution.
Mattig F., Barlow B. N., Liu D., Dorsch M., Geier S., Pritzkuleit M., Dawson H., Wang B., Schaffenroth V., Kupfer T., Derbyshire C., Barocci-Faul S.   +11 more
doaj   +1 more source

Wasserstrudel zur Simulation der Planetenbildung: Ein Strudel als protoplanetare Scheibe

Physik in unserer Zeit, Volume 57, Issue 3, Page 124-129, May 2026.
Wie kann man die Dynamik einer protoplanetaren Scheibe studieren, die man sonst nur im All auf gigantischen Größenskalen beobachten kann? Wir stellen ein Laborexperiment als Analogie vor, das sehr einfach nachgebaut werden kann und eine erstaunliche gute Übereinstimmung liefert. Mit Hilfe einer Hochgeschwindigkeitskamera vergleichen wir den Strudel mit
Stefan Knauer, Stefan Schütt, Mario Flock, Peter Manz   +3 more
wiley   +1 more source

X-ray emission from helium star-black hole binaries as probes of tidally induced spin-up of second-born black holes [PDF]

Astronomy & Astrophysics
Tidally induced spin-up of stripped helium stars in short-period (
K. Sen, A. Olejak, S. E. D. O. Astronomy, F. O. Physics, Astronomy, Informatics, N. C. University, Toruń, P. S. Observatory, D. O. Astronomy, U. Arizona, Tucson, Az, Usa Institute of Astrophysics, Garching, G. H. M. F. Kernphysik, Bonn, Germany Max-Planck-Institut fur Astronomie, Germany   +18 more
semanticscholar   +1 more source

Discovery of kilogauss magnetic fields in three DA white dwarfs [PDF]

, 2004
We have detected longitudinal magnetic fields between 2 and 4 kG in three (WD 0446−790, WD 1105−048, WD 2359−434) out of a sample of 12 normal DA white dwarfs by using optical spectropolarimetry done with the VLT Antu 8 m telescope equipped with FORS1 ...
R. A. Cuadrado, S. Jordan, R. Napiwotzki, H. Schmid, S. Solanki, G. M. M. F. Aeronomie, Katlenburg-Lindau, Germany., I. F. A. U. Astrophysik, Tubingen, G. A. Rechen-Institut, Heidelberg, D. PhysicsAstronomy, Leicester, UK Max-Planck-Institut fur Astronomie, E. Zurich, E. Observatory, Santiago, Chile.   +18 more
semanticscholar   +1 more source

Fully Kinetic Simulations of Ion‐Acoustic Waves in Asymmetric Reconnection With Cold Ions

Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract In collisionless plasma, ion‐acoustic wave (IAW) is an important candidate for enhancing resistivity and viscosity, yet their presence and role in magnetic reconnection remain poorly understood. Here, we employ 2.5‐D particle‐in‐cell simulations to investigate IAWs in asymmetric magnetopause reconnection involving a cold ion population ...
Liangjin Song, Meng Zhou, Liang Wang, Zhihong Zhong, Xinmin Li, Chuanfei Dong, Chuanpeng Hou, Rongxin Tang, Yongyuan Yi, Xiaohua Deng   +9 more
wiley   +1 more source

Transient X-ray pulsar V 0332+53: pulse-phase-resolved spectroscopy and the reflection model [PDF]

, 2015
We present the results of the pulse phase- and luminosity-resolved spectroscopy of the transient X-ray pulsar V0332+53, performed for the first time in a wide luminosity range (1-40)x10^{37} erg/s during a giant outburst observed by the RXTE observatory ...
A. Lutovinov, S.S.Tsygankov, V.F.Suleimanov A.A.Mushtukov, V.Doroshenko, D.I.Nagirner, J. S. R. Institute, Moscow, Russia., T. Observatory, U. Turku, Turku, Finland., I. F. A. U. Astrophysik, U. Tubingen, Tubingen, Germany., Kazan Federal University, Kazan, P. Observatory, S. Petersburg, -. A. Institute, Saint Petersburg State University   +21 more
semanticscholar   +1 more source

Hot subdwarf stars from the Hamburg Quasar Survey

Astronomy & Astrophysics
Hot subluminous stars (subdwarf B&O; sdB, sdO) are evolved low mass stars originating from red giants that lost their envelope almost entirely. The multitude of observed phenomena imply that several pathways may form hot subdwarfs, most involving close ...
Heber U., Kufleitner L., Dorsch M., Latour M., Dawson H., Mattig F., Geier S.   +6 more
doaj   +1 more source

Charge Selective Contacts to Metal Halide Perovskites Studied with Photoelectron Spectroscopy: X‐Ray, Ultraviolet, and Visible Light Induced Energy Level Realignment

Advanced Materials Interfaces, 2023
The electronic properties of metal halide perovskites (MHPs) are crucial for achieving the full potential of MHPs‐based optoelectronic devices, and they are extensively studied by photoelectron spectroscopy (PES). However, there are numerous complexities
Fengshuo Zu, Dongguen Shin, Emilio Gutierrez‐Partida, Martin Stolterfoht, Patrick Amsalem, Norbert Koch   +5 more
doaj   +1 more source