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Polarisation imaging is used to distinguish objects and surface characteristics that are otherwise not visible with black-and-white or colour imaging. Full-Stokes polarisation imaging allows complex image processing like water glint…

We propose a scheme to mapping electromagnetic fields structure in plasma by using a spin polarized relativistic electron beam. Especially by using Particle-in-Cell (PIC) and electron spin tracing simulations, we have successfully…

Plasma Physics · Physics 2019-07-02 X. Y. An M. Chen , J. X. Li , S. M. Weng , F. He , Z. M. Sheng , J. Zhang

Using a spatially-resolved optical pump-probe experiment, we measure the lateral transport of spin/valley polarized electrons over very long distances (tens of micrometers) in a single WSe2 monolayer. By locally pumping the Fermi sea of 2D…

Polarization in ferroelectric domains arises from atomic-scale structural variations that govern macroscopic functionalities. The interfaces between these domains known as domain walls host distinct physical responses, making their…

The domain structure in in-plane magnetized Fe/Ni/W(110) films is investigated using spin-polarized low-energy electron microscopy. A novel transition of the domain wall shape from a zigzag-like pattern to straight is observed as a function…

Mesoscale and Nanoscale Physics · Physics 2021-08-26 Gong Chen , MacCallum Robertson , Heeyoung Kwon , Changyeon Won , Andreas K. Schmid , Kai Liu

A differential coupling of topological surface states to left- versus right-circularly polarized light is the basis of many opto-spintronics applications of topological insulators. Here we report direct evidence of circular dichroism from…

Mesoscale and Nanoscale Physics · Physics 2011-11-16 Y. H. Wang , D. Hsieh , D. Pilon , L. Fu , D. R. Gardner , Y. S. Lee , N. Gedik

Recently discovered altermagnets provide a physical realization of an unconventional compensated magnetic phases with a higher partial-wave type of ordering, reminiscent of unconventional superfluid phases. Their stability under normal…

The surface states of three-dimensional topological insulators exhibit a helical spin texture with spin locked to momentum. To date, however, the direct all-electrical detection of the helical spin texture has remained elusive owing to the…

Mesoscale and Nanoscale Physics · Physics 2018-08-15 Shi-Han Zheng , Hou-Jian Duan , Mou Yang , Rui-Qiang Wang

Multilayers of Co90Fe10/Pd with different bilayer thicknesses, have been deposited by dc-magnetron sputtering on thermally oxidized Si wafers. Transmission electron microscopy showed that the highly textured crystalline films had columnar…

Materials Science · Physics 2015-06-23 Desai Zhang , Justin M. Shaw , David J. Smith , Martha R. McCartney

Magnetic x-ray diffraction combined with x-ray focusing optics is used to image individual antiferromagnetic spin density wave domains in a chromium single crystal at the micron scale. The cross section for non-resonant magnetic x-ray…

Other Condensed Matter · Physics 2007-06-01 Paul G. Evans , Eric D. Isaacs , Gabriel Aeppli , Zhonghou Cai , Barry Lai

High-resolution X-ray photoemission electron microscopy (X-PEEM) is a well-established method for imaging ferroelectric domain structures. Here, we expand the scope of application of X-PEEM and demonstrate its capability for imaging and…

In this work, we discuss the connections between pseudo spin, real spin of electrons in material and spin polarization of photo-emitted electrons out of material. By investigating these three spin textures for Bi$_2$Se$_3$ and SmB$_6$…

Materials Science · Physics 2016-08-22 Rui Yu , Hongming Weng , Zhong Fang , Xi Dai

The characterization and manipulation of deposited magnetic clusters or molecules on surfaces is a prerequisite for their future utilization. In recent years techniques like spin-flip inelastic electron tunneling spectroscopy using a…

Strongly Correlated Electrons · Physics 2019-03-25 H. -T. Langwald , J. Schnack

$\textit{Aims.}$ We present a case study to demonstrate the potential of multi-wavelength polarization measurements. The aim is to investigate the effects that dichroic polarization and thermal re-emission have on tracing the magnetic field…

Solar and Stellar Astrophysics · Physics 2015-06-19 S. Reissl , S. Wolf , D. Seifried

We show that the joint effect of spin-orbit and magnetic fields leads to a spin polarization perpendicular to the plane of a two-dimensional electron system with Rashba spin-orbit coupling and in-plane parallel dc magnetic and electric…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Hans-Andreas Engel , Emmanuel I. Rashba , Bertrand I. Halperin

We report on experimental verification of the rotational sense and type of homogeneous chiral spin spiral order in a Mn monolayer on a W(110) substrate using spin-polarized scanning tunneling microscopy. We found that the magnetic contrast…

Mesoscale and Nanoscale Physics · Physics 2016-04-06 Masahiro Haze , Yasuo Yoshida , Yukio Hasegawa

Topologically nontrivial magnetic textures such as skyrmions offer promising opportunities for spintronic applications. In recent years, it has been shown that the magnetic properties of layered materials can be affected by depositing…

A comprehensive understanding of spin-polarized photoemission is crucial for accessing the electronic structure of spin-orbit coupled materials. Yet, the impact of the final state in the photoemission process on the photoelectron spin has…

The theoretical possibility to use an electron microscope as a spin polarizer is studied. It turns out that a Bessel beam passing a standard magnetic objective lens is intrinsically spin polarized. In the limit of infinitely small detectors…

Quantum Physics · Physics 2015-12-08 Peter Schattschneider , Vincenzo Grillo

Spectroscopic measurements with low-temperature scanning tunneling microscopes have been used very successfully for studying not only individual atomic or molecular spins on surfaces but also complexly designed coupled systems. The symmetry…

Mesoscale and Nanoscale Physics · Physics 2017-03-28 Markus Ternes