A 1D metallic surface state was created on an anisotropic InSb(001) surface covered with Bi. Angle-resolved photoelectron spectroscopy (ARPES) showed a 1D Fermi contour with almost no 2D distortion. Close to the Fermi level (EF), the angle-integrated photoelectron spectra showed power-law scaling with the binding energy and temperature. The ARPES plot above EF obtained thanks to thermally broadened Fermi edge at room temperature showed a 1D state with continuous metallic dispersion across EF and power-law intensity suppression around EF. These results strongly suggest a Tomonaga-Luttinger liquid on the Bi/InSb(001) surface.
@article{arxiv.1504.04081,
title = {Surface Tomonaga-Luttinger liquid state on Bi/InSb(001)},
author = {Yoshiyuki Ohtsubo and Jun-ichiro Kishi and Kenta Hagiwara and Patrick Le Fèvre and François Bertran and Amina Taleb-Ibrahimi and Masaharu Matsunami and Hiroyuki Yamane and Shin-ichiro Ideta and Kiyohisa Tanaka and Shin-ichi Kimura},
journal= {arXiv preprint arXiv:1504.04081},
year = {2015}
}
Comments
12 pages (4 figures) for main text, 5 pages (6 figures) for supplemental material