TY  - JOUR
AU  - Wagner, Christian
AU  - Green, Matthew F. B.
AU  - Leinen, Philipp
AU  - Deilmann, Thorsten
AU  - Krüger, Peter
AU  - Rohlfing, Michael
AU  - Temirov, Ruslan
AU  - Tautz, Frank Stefan
TI  - Scanning Quantum Dot Microscopy
JO  - Physical review letters
VL  - 115
IS  - 2
SN  - 1079-7114
CY  - College Park, Md.
PB  - APS
M1  - FZJ-2016-00635
SP  - 026101
PY  - 2015
AB  - We introduce a scanning probe technique that enables three-dimensional imaging of local electrostatic potential fields with subnanometer resolution. Registering single electron charging events of a molecular quantum dot attached to the tip of an atomic force microscope operated at 5 K, equipped with a qPlus tuning fork, we image the quadrupole field of a single molecule. To demonstrate quantitative measurements, we investigate the dipole field of a single metal adatom adsorbed on a metal surface. We show that because of its high sensitivity the technique can probe electrostatic potentials at large distances from their sources, which should allow for the imaging of samples with increased surface roughness.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000357500500006
DO  - DOI:10.1103/PhysRevLett.115.026101
UR  - https://juser.fz-juelich.de/record/280924
ER  -