Results 71 to 80 of about 1,798,975 (310)

Evidence for Itinerant Ferromagnetic Flat Bands Producing Large Transverse Responses

Advanced Materials, EarlyView.
Itinerant ferromagnetic flat bands are demonstrated in GdCo5 with a high Curie temperature of 940K, a stacked honeycomb–kagome lattice, through angle‐resolved photoemission spectroscopy and magneto‐thermoelectric measurements. These topological flat bands generate large Berry curvaturte, producing gigantic anomalous Nernst effect with record‐high ...
Susumu Minami, Yangming Wang, Seigo Souma, Hiroto Nakamura, Akito Sakai, Takumi Osumi, Hang Su, Hikaru Watanabe, Shun'ichiro Kurosawa, Rikuto Oiwa, Daisuke Nishio‐Hamane, Kosuke Nakayama, Takuya Nomoto, Ryotaro Arita, Takafumi Sato, Satoru Nakatsuji   +15 more
wiley   +1 more source

Astronomical random numbers for quantum foundations experiments [PDF]

, 2018
Photons from distant astronomical sources can be used as a classical source of randomness to improve fundamental tests of quantum nonlocality, wave-particle duality, and local realism through Bell's inequality and delayed-choice quantum eraser tests ...
Brown, Amy, Friedman, Andrew S., Gallicchio, Jason, Kaiser, David I., Leung, Calvin, Nguyen, Hien   +5 more
core   +2 more sources

Holocene vegetation patterns in southern Lithuania indicate astronomical forcing on the millennial and centennial time scales [PDF]

Scientific Reports, 2019
AbstractThe Earth’s biota originated and developed to its current complex state through interacting with multilevel physical forcing of our planet’s climate and near and outer space phenomena. In the present study, we focus on the time scale of hundreds to thousands of years in the most recent time interval – the Holocene. Using a pollen paleocommunity
Spiridonov, Andrej, Balakauskas, Lauras, Stankevič, Robertas, Gryguc, Gražyna, Gedminienė, Laura, Stančikaitė, Miglė   +5 more
openaire   +4 more sources

Self‐Powered Flexible Triboelectric‐Gated Ion‐Gel Transistor for Neuromorphic Tactile Sensing and Human Activity Recognition

Advanced Materials, EarlyView.
A fully flexible ion‐gel‐gated graphene‐channel transistor driven by a triboelectric nanogenerator enables self‐powered tactile sensing and synaptic learning. Mimicking spike‐rate‐dependent plasticity, the device exhibits frequency‐selective potentiation and depression, supporting rate‐coded neuromorphic computation even under flex.
Hanseong Cho, Seoyeon Park, Youngmin Lee, Sejoon Lee   +3 more
wiley   +1 more source

Analemmatic and horizontal sundials of the Bronze Age (Northern Black Sea Coast) [PDF]

Archaeoastronomy and Ancient Technologies, 2013
The paper presents the results of a study of unique slab with images of Srubna burial of tumuli group Popov Yar-2 (Ukraine) and slab of Srubna burial of tumulus field Tavriya-1 (Russia). A distinctive feature of the images is the orderliness and symmetry
Vodolazhskaya, L.N.
doaj   +1 more source

Astronomical bounds on future big freeze singularity

, 2007
Recently it was found that dark energy in the form of phantom generalized Chaplygin gas may lead to a new form of the cosmic doomsday, the big freeze singularity.
A. A. Starobinsky, A. V. Astashenok, A. V. Yurov, A. Yu. Kamenshchik, I.M. Khalatnikov, J. D. Barrow, M. Bouhmadi-Lopez, P. F. González-Díaz, S. Cappozziello   +8 more
core   +1 more source

Forward Modeling of Double Neutron Stars: Insights from Highly-Offset Short Gamma-Ray Bursts

, 2020
We present a detailed analysis of two well-localized, highly offset short gamma-ray bursts---GRB~070809 and GRB~090515---investigating the kinematic evolution of their progenitors from compact object formation until merger. Calibrating to observations of
Berry, Christopher P. L., Fong, Wen-fai, Kalogera, Vicky, Kelley, Luke Zoltan, Nugent, Anya, Zevin, Michael   +5 more
core   +1 more source

A comparison of two astronomical tuning approaches for the Oligocene-Miocene Transition from Pacific Ocean Site U1334 and implications for the carbon cycle [PDF]

, 2017
Astronomical tuning of sediment sequences requires both unambiguous cycle-pattern recognition in climate proxy records and astronomical solutions, and independent information about the phase relationship between these two.
Beddow, HM, Hilgen, FJ, Liebrand, D, Lourens, LJ, Sluijs, A, Wade, BS, Wilson, DS   +6 more
core   +1 more source

When Poor Exciton Dissociation Limits Photocurrents in Organic Solar Cells: Why Low Offset Non‐Fullerene Acceptor Blends Can't Be Efficient

Advanced Materials, EarlyView.
The energetic offset between the donor and the acceptor components in organic photoactive layers is central to the tradeoff between photovoltage and photocurrent losses. This Perspective covers the most important issues surrounding this topic in non‐fullerene acceptor blends, from the difficulty of accurately determining state energies and driving ...
Dieter Neher, Manasi Pranav
wiley   +1 more source

Astronomical cyclic constraints on organic matter enrichment in Paleogene Weizhou Formation, Haizhong Sag, Beibu Gulf Basin

Shiyou shiyan dizhi
The development characteristics and enrichment patterns of organic matter are closely related to the paleo-sedimentary environment, forming a core aspect in petroleum geology research.
Tan ZHANG, Pengcheng YANG, Qian CAO, Huawei NIU, Wei YAO, Xinyu FAN, Yueheng WU, Jun YANG, Yushuang ZHOU, Yanqing WANG   +9 more
doaj   +1 more source