ACTA

Periodic Surface Modulation of (LaSe)_1.14(NbSe₂) Observed by Scanning Tunneling Microscopy

O. Šofranko^a, R. Leriche^b, A.P. Morales^b, T. Cren^b, S. Sasaki^c, L. Cario^c, P. Szabo^a, P. Samuely^a, T. Samuely^a
^aCentre of Low Temperature Physics, Institute of Experimental Physics SAS, P.J. Šafárik University, 040 01 Košice, Slovakia
^bSorbonne Université, CNRS, Institut des Nanosciences de Paris, UMR7588, F-75252 Paris, France
^cInstitut des Matériaux Jean Rouxel (IMN), Université de Nantes, CNRS, 2 rue de la Houssinière, BP 32229, 44322 Nantes Cedex 3, France

Full Text PDF

Fourier transformation of atomically resolved STM topography of (LaSe)_1.14(NbSe₂) revealed a surface modulation along the hexagonal surface lattice of NbSe₂ layer, but with a two times larger period. We compare it to the modified charge density wave found on plain NbSe₂ under strain.

DOI:10.12693/APhysPolA.137.785
topics: scanning tunneling microscopy, misfit layer compound, Lanthanum niobium selenides, electronic properties