scholarly journals Absence of correlation between built-in electric dipole moment and quantum Stark effect in single InAs/GaAs self-assembled quantum dots

2003 ◽  
Vol 67 (12) ◽  
Author(s):  
Weidong Sheng ◽  
Jean-Pierre Leburton
Keyword(s):  
Quantum Dots ◽  
Dipole Moment ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Stark Effect ◽  
Self Assembled

Microwave Spectrum and Dipole Moment of Methylenecyclobutenone

1974 ◽  
Vol 29 (10) ◽  
pp. 1498-1500 ◽  
Author(s):  
W. Czieslik ◽  
L. Carpentier ◽  
D. H. Sutter
Keyword(s):  
Dipole Moment ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Ground State ◽  
Stark Effect ◽  
Microwave Spectrum ◽  
Least Square ◽  
Rotational Constants ◽  
Vibrational Ground State ◽  
Least Square Fit

Abstract The microwave spectrum of Methylenecyclobutenone has been investigated in the vibrational ground state in the range of 8 to 26.5 GHz. From a least square fit of 12 lines with J ≦ 4 the rotational constants have been calculated as A =5.775664±0.000009 GHz, B = 4.312314 ± 0.000007 GHz, C = 2.467814±0.000008 GHz. The inertia defect Δ = - 0.09 amuÅ2 indicates that the molecule is planar. From Stark-effect measurements the components of the molecular electric dipole moment were obtaied as |μa| = 2.04 ± 0.02 D, |μb| = 2.70±0.03 D, |μtotal| = 3.39 ± 0.05 D.

Elektrisches Dipolmoment von TlBr und TlJ

1971 ◽  
Vol 26 (11) ◽  
pp. 1809-1812 ◽  
Author(s):  
E. Tiemann
Keyword(s):  
Dipole Moment ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Vibrational State ◽  
Stark Effect ◽  
Dipole Moments ◽  
Electric Dipole Moments ◽  
Ground Vibrational State ◽  
Rotational Transitions

Stark-effect measurements on pure rotational transitions of TlBr and Til are described. The derived electric dipole moments of the most abundant isotopic molecules on the ground vibrational state are:205TL79Br : | μ0| = (4.493 ± 0.050) D , 205Tl127 I | μ 0| =(4.607 ± 0.070) D .The electric dipole moment of 205Tl19F | μ 0|=4.2282 (8) D was used as standard.

Elektrisches Dipolmoment und Mikrowellen- rotationsspektrum von SiS

1969 ◽  
Vol 24 (9) ◽  
pp. 1422-1423 ◽  
Author(s):  
J. Hoeft ◽  
F.J. Lovas ◽  
T. Törring
Keyword(s):  
Dipole Moment ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Stark Effect ◽  
Rotational Transitions

Abstract Stark effect measurements on pure rotational transitions of SiS are described. Measurements on the ground vibra-tional state of the most abundant molecule resulted in the following electric dipole moment:

Quantum-confined Stark effect and built-in dipole moment in self-assembled InAs∕GaAs quantum dots

2004 ◽  
Vol 85 (14) ◽  
pp. 2791-2793 ◽  
Author(s):  
Peng Jin ◽  
C. M. Li ◽  
Z. Y. Zhang ◽  
F. Q. Liu ◽  
Y. H. Chen ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Dipole Moment ◽  
Stark Effect ◽  
Quantum Confined Stark Effect ◽  
Quantum Confined ◽  
Self Assembled

Rotational Spectrum , Electric Dipole Moment, Quadrupole Coupling , and Partial r0- Structure of 3 -Cyanothiophene

1977 ◽  
Vol 32 (8) ◽  
pp. 890-896 ◽  
Author(s):  
J. Wiese ◽  
D. H. Sutter
Keyword(s):  
Dipole Moment ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Stark Effect ◽  
Quadrupole Coupling Constant ◽  
Abundant Species ◽  
Rotational Spectrum ◽  
Quadrupole Coupling ◽  
Centrifugal Distortion Constants ◽  
Ring Distortion

Abstract The microwave rotational spectrum of the most abundant species of 3-Cyanothiophene was investigated for the ground vibrational state. Rotational constants and centrifugal distortion constants are given. The electric dipole moment components μa and μb and the 14N-quadrupole coupling constant X + = X bb + X cc were determined from the Stark-effect splittings and hfs-splittings respectively. The experimental results are compared to CNDO/2 calculations and are discussed with reference to ring distortion.

Quantum Confined Stark Effect and Permanent Dipole Moment of InAs–GaAs Self-Assembled Quantum Dots

2000 ◽  
Vol 178 (1) ◽  
pp. 269-275 ◽  
Author(s):  
P.W. Fry ◽  
I.E. Itskevich ◽  
D.J. Mowbray ◽  
M.S. Skolnick ◽  
J. Barker ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Dipole Moment ◽  
Stark Effect ◽  
Permanent Dipole Moment ◽  
Quantum Confined Stark Effect ◽  
Quantum Confined ◽  
Self Assembled

The Microwave Spectrum of Cyanogen Iodide-15N: Hyperfine Structure and Electric Dipole Moment Investigated by Microwave Fourier Transform Spectroscopy

1988 ◽  
Vol 43 (2) ◽  
pp. 133-137 ◽  
Author(s):  
Joachim Gripp ◽  
Helmut Dreizler
Keyword(s):  
Fourier Transform ◽  
Dipole Moment ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Stark Effect ◽  
Rotational Transition ◽  
Microwave Spectrum ◽  
Spin Rotation ◽  
Coupling Parameters ◽  
Cyanogen Iodide

The first rotational transition of cyanogen iodide-15N (IC15N) has been investigated by microwave Fourier transform (MWFT) Stark effect spectroscopy to determine the electric dipole moment. In addition the first four rotational transitions have been measured by MWFT spectroscopy to obtain accurate parameters for the rotational, quadrupole and spin-rotation coupling parameters.

Photocurrent Spectroscopy of InAs/GaAs Self-Assembled Quantum Dots: Observation of a Permanent Dipole Moment

1999 ◽  
Vol 571 ◽  
Author(s):  
P.W. Fry ◽  
I.E. Itskevich ◽  
D.J. Mowbray ◽  
M.S. Skolnick ◽  
J.A. Barker ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Dipole Moment ◽  
Stark Effect ◽  
Permanent Dipole Moment ◽  
Thermal Excitation ◽  
Zero Field ◽  
Quantum Confined Stark Effect ◽  
Photocurrent Spectroscopy ◽  
Self Assembled ◽  
Carrier Escape

ABSTRACTPhotocurrent spectroscopy of InAs/GaAs self-assembled quantum dots, studied as a function of applied electric field, is used to probe the nature of the confined electronic states. A field asymmetry of the quantum confined Stark effect is observed, consistent with the dots possessing a permanent dipole moment. The sign of this dipole indicates that for zero field the hole wavefunction lies above that of the electron, in disagreement with the predictions of all recent calculations. Comparison with a theoretical model demonstrates that the experimentally determined alignment of the electron and hole can only be explained if the dots contain a nonzero and non-uniform Ga content. The role of two different carrier escape mechanisms, tunneling and thermal excitation, is studied.

Stark Effect and Electric Dipole Moment of D2Se

1969 ◽  
Vol 50 (9) ◽  
pp. 4118-4118 ◽  
Author(s):  
A. M. Mirri ◽  
G. Corbelli ◽  
P. Forti
Keyword(s):  
Dipole Moment ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Stark Effect
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