Rotatable high-resolution ARPES system for tunable linear-polarization geometry

A rotatable high-resolution angle-resolved photoemission spectroscopy (ARPES) system has been developed to utilize tunable linear-polarization geometries on the linear undulator beamline (BL-1) at Hiroshima Synchrotron Radiation Center. By rotating the whole ARPES measurement system, the photoelectron detection plane can be continuously changed from parallel to normal against the electric field vector of linearly polarized undulator radiation. This polarization tunability enables us to identify the symmetry of the initial electronic states with respect to the mirror planes, and to selectively observe the electronic states based on the dipole selection rule in the photoemission process. Specifications of the rotatable high-resolution ARPES system are described, as well as its capabilities with some representative experimental results.

Source: Journal of Synchrotron Radiation - June 19, 2017 Category: Physics Authors: Iwasawa, H. Shimada, K. Schwier, E.F. Zheng, M. Kojima, Y. Hayashi, H. Jiang, J. Higashiguchi, M. Aiura, Y. Namatame, H. Taniguchi, M. Tags: angle-resolved photoemission spectroscopy (ARPES) rotatable high-resolution ARPES system linear polarization condensed-matter physics research papers Source Type: research