Giant permanent dipole moments of excitons in semiconductor nanostructures

R. J. Warburton; C. Schulhauser; D. Haft; C. Schäflein; K. Karrai; J. M. Garcia; W. Schoenfeld; P. M. Petrofft

Giant permanent dipole moments of excitons in semiconductor nanostructures

R. J. Warburton, C. Schulhauser, D. Haft, C. Schäflein, K. Karrai, J. M. Garcia, W. Schoenfeld, P. M. Petrofft

School of Engineering & Physical Sciences

Research output: Contribution to journal › Article › peer-review

151 Citations (Scopus)

Abstract

We have measured the vertical Stark effect of excitons confined to individual self-assembled ring-shaped quantum dots. We find that the excitons have very large permanent dipole moments corresponding to electronhole separations up to 2.5 nm, comparable to the nanostructures' physical height. We find a trend of both permanent dipole moment and polarizability on the emission energy, but a very strong correlation between the permanent dipole moment and the polarizability.

Original language	English
Article number	113303
Pages (from-to)	1133031-1133034
Number of pages	4
Journal	Physical Review B: Condensed Matter and Materials Physics
Volume	65
Issue number	11
Publication status	Published - 15 Mar 2002

Cite this

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title = "Giant permanent dipole moments of excitons in semiconductor nanostructures",

abstract = "We have measured the vertical Stark effect of excitons confined to individual self-assembled ring-shaped quantum dots. We find that the excitons have very large permanent dipole moments corresponding to electronhole separations up to 2.5 nm, comparable to the nanostructures' physical height. We find a trend of both permanent dipole moment and polarizability on the emission energy, but a very strong correlation between the permanent dipole moment and the polarizability.",

author = "Warburton, {R. J.} and C. Schulhauser and D. Haft and C. Sch{\"a}flein and K. Karrai and Garcia, {J. M.} and W. Schoenfeld and Petrofft, {P. M.}",

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T1 - Giant permanent dipole moments of excitons in semiconductor nanostructures

AU - Warburton, R. J.

AU - Schulhauser, C.

AU - Haft, D.

AU - Schäflein, C.

AU - Karrai, K.

AU - Garcia, J. M.

AU - Schoenfeld, W.

AU - Petrofft, P. M.

PY - 2002/3/15

Y1 - 2002/3/15

N2 - We have measured the vertical Stark effect of excitons confined to individual self-assembled ring-shaped quantum dots. We find that the excitons have very large permanent dipole moments corresponding to electronhole separations up to 2.5 nm, comparable to the nanostructures' physical height. We find a trend of both permanent dipole moment and polarizability on the emission energy, but a very strong correlation between the permanent dipole moment and the polarizability.

AB - We have measured the vertical Stark effect of excitons confined to individual self-assembled ring-shaped quantum dots. We find that the excitons have very large permanent dipole moments corresponding to electronhole separations up to 2.5 nm, comparable to the nanostructures' physical height. We find a trend of both permanent dipole moment and polarizability on the emission energy, but a very strong correlation between the permanent dipole moment and the polarizability.

M3 - Article

SN - 1098-0121

VL - 65

SP - 1133031

EP - 1133034

JO - Physical Review B: Condensed Matter and Materials Physics

JF - Physical Review B: Condensed Matter and Materials Physics

IS - 11

M1 - 113303

ER -

Giant permanent dipole moments of excitons in semiconductor nanostructures

Abstract

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