Ontology highlight
ABSTRACT:
SUBMITTER: Baringhaus J
PROVIDER: S-EPMC4404713 | biostudies-literature | 2015
REPOSITORIES: biostudies-literature
Baringhaus Jens J Stöhr Alexander A Forti Stiven S Starke Ulrich U Tegenkamp Christoph C
Scientific reports 20150421
The realization of ballistic graphene pn-junctions is an essential task in order to study Klein tunneling phenomena. Here we show that intercalation of Ge under the buffer layer of pre-structured SiC-samples succeeds to make truly nano-scaled pn-junctions. By means of local tunneling spectroscopy the junction width is found to be as narrow as 5 nm which is a hundred times smaller compared to electrically gated structures. The ballistic transmission across the junction is directly proven by syste ...[more]