One phonon resonant Raman scattering in semiconductor quantum wires: Magnetic field effect

The resonant Raman scattering of a quantum wire in a strong magnetic field is studied, focused on the effect of long range Coulomb interaction and the spin–charge separation. The energy–momentum dispersions of charge and spin excitation obtained from Raman cross-section show the characteristc cross-over behaviour induced by inter-edge Coulomb interaction. The "SPE" peak near resonance in polarized spectra becomes broad due to the momentum dependence of charge velocity. The broad peak in the depolarized spectra is shown to originate from the disparity between charge and spin excitation velocity.

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Magnetic-field-assisted ultrasensitive immunoassay based on multi-phonon resonant raman scattering of semiconductor nanocrystals

Nanomedicine Nanotechnology Biology and Medicine ◽

10.1016/j.nano.2017.11.081 ◽

2018 ◽

Vol 14 (5) ◽

pp. 1765

Author(s):

Yadan Ding ◽

Tie Cong ◽

Xia Hong ◽

Yichun Liu

Keyword(s):

Magnetic Field ◽

Raman Scattering ◽

Semiconductor Nanocrystals ◽

Resonant Raman ◽

Resonant Raman Scattering

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New selection rules for resonant Raman scattering on quantum wires

EPL (Europhysics Letters) ◽

10.1209/epl/i2000-00137-2 ◽

2000 ◽

Vol 49 (2) ◽

pp. 224-230 ◽

Cited By ~ 6

Author(s):

E Mariani ◽

M Sassetti ◽

B Kramer

Keyword(s):

Raman Scattering ◽

Quantum Wires ◽

Selection Rules ◽

Resonant Raman ◽

Resonant Raman Scattering

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ONE-PHONON-ASSISTED ELECTRON RESONANT RAMAN SCATTERING IN FREE-STANDING QUANTUM WIRES

International Journal of Modern Physics B ◽

10.1142/s0217979207037466 ◽

2007 ◽

Vol 21 (17) ◽

pp. 2989-3000

Author(s):

XIANG-FU ZHAO ◽

CUI-HONG LIU

Keyword(s):

Raman Scattering ◽

Quantum Wire ◽

Quantum Wires ◽

Longitudinal Optical ◽

Phonon Modes ◽

Free Standing ◽

Surface Optical ◽

Resonant Raman ◽

Resonant Raman Scattering ◽

Valence Bands

The scattering intensity (SI) for an electron resonant Raman scattering (ERRS) process in a free-standing semiconductor quantum wire of cylindrical geometry associated with bulk longitudinal optical (LO) phonon modes or the surface optical (SO) phonon modes is calculated for T=0 K . The Fröhlich interaction is considered to illustrate the theory for a GaAs system. Electron states are confined within a free-standing quantum wire (FSW). Single parabolic conduction and valence bands are assumed. The selection rules are studied. Numerical results and a discussion are also presented for various radii of the cylindrical quantum wires.

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