Authors: George Rajna
The spin-filters developed here are another component of perovskite-based spintronic applications.  Perovskites may be the next material to get the full 2D makeover, according to studies by a team of researchers at Nanjing University in China and the University of Nebraska-Lincoln and University of California, Irvine, in the US.  A new joint Tel Aviv University (TAU) and Karlsruhe Institute of Technology (KIT) study published in Nature Communications on February 28 demonstrates remarkable continuous lasing action in devices made from perovskites.  Efficient near-infrared (NIR) light-emitting diodes of perovskite have been produced in a laboratory at Linköping University. The external quantum efficiency is 21.6 percent, which is a record. The results have been published in Nature Photonics.  Very recently, an NTU team lead by Assoc. Prof. Wang Hong, demonstrated high light extraction efficiency of perovskite photonic crystals fabricated by delicate electron-beam lithography.  A quasiparticle is a disturbance or excitation (e.g. spin waves, bubbles, etc.) that behaves as a particle and could therefore be regarded as one. Long-range interactions between quasiparticles can give rise to a 'drag,' which affects the fundamental properties of many systems in condensed matter physics.  Researchers have recently been also interested in the utilization of antiferromagnets, which are materials without macroscopic magnetization but with a staggered orientation of their microscopic magnetic moments.  A new method that precisely measures the mysterious behavior and magnetic properties of electrons flowing across the surface of quantum materials could open a path to next-generation electronics.  The emerging field of spintronics aims to exploit the spin of the electron.  In a new study, researchers measure the spin properties of electronic states produced in singlet fission-a process which could have a central role in the future development of solar cells. 
Comments: 32 Pages.
[v1] 2019-12-10 05:26:41
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