Ultrahigh-resolution spin-resolved photoemission spectrometer with a mini Mott detector

S Souma; A Takayama; K Sugawara; T Sato; T Takahashi

doi:10.1063/1.3480542

Ultrahigh-resolution spin-resolved photoemission spectrometer with a mini Mott detector

Rev Sci Instrum. 2010 Sep;81(9):095101. doi: 10.1063/1.3480542.

Authors

S Souma¹, A Takayama, K Sugawara, T Sato, T Takahashi

Affiliation

¹ WPI Research Center, Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan. s.souma@arpes.phys.tohoku.ac.jp

PMID: 20887002
DOI: 10.1063/1.3480542

Abstract

We have developed an ultrahigh-resolution spin-resolved photoemission spectrometer with a highly efficient mini Mott detector and an intense xenon plasma discharge lamp. The spectrometer achieves the energy resolutions of 0.9 and 8 meV for non-spin-resolved and spin-resolved modes, respectively. Three-dimensional spin-polarization is determined by using a 90° electron deflector situated before the Mott detector. The performance of spectrometer is demonstrated by observation of a clear Rashba splitting of the Bi(111) surface states.