Journal of Mathematical Physics, Volume 61, Issue 9, September 2020. Quasi-symmetry of a steady magnetic field means integrability of first-order guiding-center motion by a spatial symmetry. Here, we derive many restrictions on the possibilities for a …
One photon’s transmission usefully controls another
<p>To preserve the quantum correlations between two particles of light, researchers mapped the scattering that a photon experienced onto the entangled state.</p>
Enhanced output performance of flexible piezoelectric energy harvester by using auxetic graphene films as electrodes
Applied Physics Letters, Volume 117, Issue 10, September 2020. We demonstrate an effective approach to enhance the output performance of a flexible piezoelectric energy harvester by using flexible electrodes with negative Poisson’s ratio (NPR). The rel…
Bistability and metastability of oxygen vacancies in amorphous Al2O3: A possible origin of resistance switching mechanism
Applied Physics Letters, Volume 117, Issue 10, September 2020. Vacancies in oxides play important roles in material performances of electronic devices, and they are recently considered to be a source of the bistable resistance switching effects of amor…
The effect of current density–voltage measurement conditions on the operational stability of hybrid perovskite solar cells
Applied Physics Letters, Volume 117, Issue 10, September 2020. Organic–inorganic lead halide perovskites have attracted great attention for use in solar cells, because of their efficient solar power conversion, along with compatibility with simple solu…
Identification of two trapping mechanisms responsible of the threshold voltage variation in SiO2/4H-SiC MOSFETs
Applied Physics Letters, Volume 117, Issue 10, September 2020. A method based on cyclic gate bias stress followed by a single point drain current measurement is used to probe the interface or near-interface traps in the SiO2/4H-SiC system over the whol…
Strain-tunable magnetism and nodal loops in monolayer MnB
Applied Physics Letters, Volume 117, Issue 10, September 2020. Designing two-dimensional materials with magnetic and topological properties has continuously attracted intense interest in fundamental science and potential applications. Here, on the basi…
Ideal memristor based on viscous magnetization dynamics driven by spin torque
Applied Physics Letters, Volume 117, Issue 10, September 2020. We show that ideal memristors—devices whose resistance is proportional to the charge that flows through them—can be realized using spin torque-driven viscous magnetization dynamics. The lat…
Controlled giant magnetoresistance and spin–valley transport in an asymmetrical MoS2 tunnel junction
Applied Physics Letters, Volume 117, Issue 10, September 2020. We study the effects of asymmetrical magnetization and an optoelectronic tunable band structure on the transmission of particles in a MoS2 tunnel junction. Based on the results, we propose …
Hybrid magnetoacoustic metamaterials for ultrasound control
Applied Physics Letters, Volume 117, Issue 10, September 2020. We propose a class of metamaterials in which the propagation of acoustic waves is controlled magnetically through magnetoelastic coupling. The metamaterials are formed by a periodic array o…
