-A A +A
Cd 3 As 2 is widely considered among the few materials realizing the three-dimensional (3D) Dirac semimetal phase. Linearly dispersing states, responsible for the ultrahigh charge mobility, have been reported by several angle-resolved photoelectron spectroscopy (ARPES) investigations. However, in spite of the general agreement between these studies, some details are at odds. From scanning tunneling microscopy and optical experiments under magnetic field, a puzzling scenario emerges in which multiple states show linear dispersion at different energy scales. Here, we solve this apparent controversy by reinvestigating the electronic properties of the (112) surface of Cd 3 As 2 by combining ARPES and theoretical calculations. We disentangle the presence of massive and massless metallic bulk and surface states, characterized by different symmetries. Our systematic experimental and theoretical study …
American Physical Society
Publication date: 
30 Apr 2018

S Roth, H Lee, A Sterzi, M Zacchigna, A Politano, R Sankar, FC Chou, G Di Santo, L Petaccia, OV Yazyev, A Crepaldi

Biblio References: 
Volume: 97 Issue: 16 Pages: 165439
Physical Review B