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@ARTICLE{Portz:849552,
author = {Portz, V. and Schnedler, M. and Eisele, H. and
Dunin-Borkowski, Rafal and Ebert, Ph.},
title = {{E}lectron affinity and surface states of {G}a{N} m -plane
facets: {I}mplication for electronic self-passivation},
journal = {Physical review / B},
volume = {97},
number = {11},
issn = {2469-9950},
address = {Woodbury, NY},
publisher = {Inst.},
reportid = {FZJ-2018-03735},
pages = {115433},
year = {2018},
abstract = {The electron affinity and surface states are of utmost
importance for designing the potential landscape within
(heterojunction) nanowires and hence for tuning conductivity
and carrier lifetimes. Therefore, we determined for
stoichiometric nonpolar GaN(10¯10) m-plane facets, i.e.,
the dominating sidewalls of GaN nanowires, the electron
affinity to 4.06±0.07eV and the energy of the empty
Ga-derived surface state in the band gap to 0.99±0.08eV
below the conduction band minimum using scanning tunneling
spectroscopy. These values imply that the potential
landscape within GaN nanowires is defined by a surface
state-induced Fermi-level pinning, creating an upward band
bending at the sidewall facets, which provides an electronic
passivation.},
cin = {PGI-5 / ER-C-1},
ddc = {530},
cid = {I:(DE-Juel1)PGI-5-20110106 / I:(DE-Juel1)ER-C-1-20170209},
pnm = {141 - Controlling Electron Charge-Based Phenomena
(POF3-141)},
pid = {G:(DE-HGF)POF3-141},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000427816300004},
doi = {10.1103/PhysRevB.97.115433},
url = {https://juser.fz-juelich.de/record/849552},
}