Novello, AM; Hildebrand, B; Scarfato, A; Didiot, C; Monney, G; Ubaldini, A; Berger, H; ... Renner, C; + view all Novello, AM; Hildebrand, B; Scarfato, A; Didiot, C; Monney, G; Ubaldini, A; Berger, H; Bowler, DR; Aebi, P; Renner, C; - view fewer (2015) Scanning tunneling microscopy of the charge density wave in 1T-TiSe2 in the presence of single atom defects. Physical Review B , 92 (8) , Article 081101(R). 10.1103/PhysRevB.92.081101.

Preview

Text Novello et al. - 2015 - Scanning tunneling microscopy of the charge density wave in TiSe2 in the presence of single atom defects.pdf - Published Version Download (817kB) | Preview

Abstract

We present a detailed low-temperature scanning tunneling microscopy (STM) study of the commensurate charge density wave (CDW) in 1T -TiSe2 in the presence of single atom defects.We find no significant modification of the CDW lattice in single crystals with native defect concentrations where some bulk probes already measure substantial reductions in the CDW phase transition signature. A systematic analysis of STM micrographs combined with density functional theory modeling of atomic defect patterns indicate that the observed CDW modulation lies in the Se surface layer. The defect patterns clearly show there are no 2H-polytype inclusions in the CDW phase, as previously found at room temperature [A. N. Titov et al., Phys. Solid State 53, 1073 (2011)]. They further provide an alternative explanation for the chiral Friedel oscillations recently reported in this compound [J. Ishioka et al., Phys. Rev. B 84, 245125 (2011)].

Download activity - last month

Export as CSVXMLJSON

Download activity - last 12 months

Export as JSONXMLCSV

Downloads by country - last 12 months

Export as JSONXMLCSV

Archive Staff Only

View Item