Abstract

Beside massless Dirac fermions, topological insulator surfaces can host a massive two-dimensional electron gas. Using near-field spectroscopy, we identify both of these surface states by retrieving the nanoscale dielectric function without any model assumptions.

© 2019 The Author(s)

PDF Article

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription