Results 131 to 140 of about 116,471 (292)

Production of unstable heavy neutrinos in proto-neutron stars

Physics Letters B, 2015
We discuss the production of a class of heavy sterile neutrinos νh in proto-neutron stars. The neutrinos, of mass around 50 MeV, have a negligible mixing with the active species but relatively large dimension-5 electromagnetic couplings. In particular, a
C. Albertus, M. Masip, M.A. Pérez-García   +2 more
doaj   +1 more source

Polarization preservation of polarized deuteron beams in the electron ion collider at Brookhaven National Laboratory

Physical Review Accelerators and Beams, 2020
The physics program at the future electron ion collider (EIC) calls for polarized neutron beams at high energies. The best neutron carriers are ^{3}He nuclei and deuterons.
H. Huang, F. Méot, V. Ptitsyn, V. Ranjbar, T. Roser   +4 more
doaj   +1 more source

Phonon Driven Ferroelectricity and Raman Active Modes in Hybrid Organic‐Inorganic Perovskites

Advanced Materials, EarlyView.
Ferroelectric domains, a hallmark of ferroelectricity, are studied using temperature‐dependent Raman spectroscopy to uncover characteristic phonons associated with ferroelectric phase transitions in different n‐value HOIPs. Higher n‐value HOIP demonstrate a reduced ferroelectric switching energy barrier, providing valuable insights for optimizing ...
Chuanzhao Li, Shurong Yuan, Yixin Li, Zhenyue Wu, Yuanyuan Jin, Kian Ping Loh, Kai Leng   +6 more
wiley   +1 more source

QED calculation of the nuclear magnetic shielding for hydrogen-like ions

, 2012
We report an ab initio calculation of the shielding of the nuclear magnetic moment by the bound electron in hydrogen-like ions. This investigation takes into account several effects that have not been calculated before (electron self-energy, vacuum ...
Harman, Z., Keitel, C. H., Pachucki, K., Yerokhin, V. A.   +3 more
core   +1 more source

Mechanical Resonant Sensing of Spin Texture Dynamics in a 2D Antiferromagnet

Advanced Materials, EarlyView.
Detection of antiferromagnetic spin texture in a 2D magnetic crystal is achieved through nanomechanical resonators at radio frequencies. Sharp magnetic transitions that lead to abrupt changes in mechanical linear and nonlinear responses are assigned to antiferromagnetic domain motions.
S M Enamul Hoque Yousuf, Yunong Wang, Shreyas Ramachandran, John Koptur‐Palenchar, Chiara Tarantini, Li Xiang, Stephen McGill, Dmitry Smirnov, Elton J. G. Santos, Philip X.‐L. Feng, Xiao‐Xiao Zhang   +10 more
wiley   +1 more source

Nuclear spin content and constraints on exotic spin-dependent couplings

New Journal of Physics, 2015
There are numerous recent and ongoing experiments employing a variety of atomic species to search for couplings of atomic spins to exotic fields. In order to meaningfully compare these experimental results, the coupling of the exotic field to the atomic ...
D F Jackson Kimball
doaj   +1 more source

Topology in Biological Piezoelectric Materials

Advanced Materials, EarlyView.
This review summarizes the topological structures in biological piezoelectric materials, covering morphology evolution, spatial arrangement, and biomimetic strategies. These topologies modulate structure‐property relationships across multiple scales, enabling performance enhancement and multifunctional integration.
Chen Chen, Yanhu Zhang, Yi Zheng, Yi Zhang, Hongyi Liu, Jiang Wu, Liang Yang, Zhengbao Yang   +7 more
wiley   +1 more source

All‐Heat Control of Magnetization Dynamics on Van der Waals Magnets

Advanced Materials, EarlyView.
Heat dissipation in nanomagnetic devices mediated by femtosecond laser excitation constitutes one of the pressing challenges toward energy‐efficient information communication technologies. Here it is shown that heat and magnetization play together to determine the ultrafast spin dynamics of van der Waals magnets across any substrates and magnet ...
Sumit Haldar, Theodor Griepe, Unai Atxitia, Elton J. G. Santos   +3 more
wiley   +1 more source

Ambient fields generated by a laser spark

Nukleonika, 2016
The electric and magnetic fields surrounding a laser spark formed after an optical breakdown due to a focused nanosecond laser beam in a gaseous environment are examined in order to assess their possible influence on the processes going on in the gas ...
Rohlena Karel, Mašek Martin
doaj   +1 more source

Mussel‐Inspired Molecular Strategies for Fabricating Functional Materials With Underwater Adhesion and Self‐Healing Properties

Advanced Materials, EarlyView.
This review systematically examines the nanomechanical mechanisms of mussel‐inspired molecular interactions, primarily investigated by direct force measurement techniques such as surface forces apparatus and atomic force microscopy. The macroscopic adhesive and self‐healing performances of mussel‐inspired functional materials, including coacervates ...
Pan Huang, Hongjian Zhang, Hongbo Zeng
wiley   +1 more source