TY - JOUR
T1 - Surface states of wurtzite semiconductor nanowires with identical lateral facets
T2 - A transfer-matrix approach
AU - Malkova, N.
AU - Ning, C. Z.
PY - 2006/10/19
Y1 - 2006/10/19
N2 - The focus of this paper is to investigate systematically surface states of semiconductor nanowires of wurtzite crystals with identical lateral surfaces. We first calculate the surface spectrum of a semi-infinite crystal. Then, using cyclic boundary conditions, we calculate the quantized spectrum of the surface states in nanowires. We find that the spectrum of the nanowire surfaces consists of a number of quantized levels inside the band gap. We further study absorption coefficients due to dipole transitions between the surface states in such nanowires. We demonstrate that such transitions lead to absorption above the fundamental band edge transition. Our calculations also show that the absorption coefficient induced by the transitions between the surface states depends weakly on the light polarization.
AB - The focus of this paper is to investigate systematically surface states of semiconductor nanowires of wurtzite crystals with identical lateral surfaces. We first calculate the surface spectrum of a semi-infinite crystal. Then, using cyclic boundary conditions, we calculate the quantized spectrum of the surface states in nanowires. We find that the spectrum of the nanowire surfaces consists of a number of quantized levels inside the band gap. We further study absorption coefficients due to dipole transitions between the surface states in such nanowires. We demonstrate that such transitions lead to absorption above the fundamental band edge transition. Our calculations also show that the absorption coefficient induced by the transitions between the surface states depends weakly on the light polarization.
UR - http://www.scopus.com/inward/record.url?scp=33749872391&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33749872391&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.74.155308
DO - 10.1103/PhysRevB.74.155308
M3 - Article
AN - SCOPUS:33749872391
SN - 1098-0121
VL - 74
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 15
M1 - 155308
ER -