Observation of a Soft Surface-Phonon Mode in the Reconstruction of Clean W(100)

AbstractHigh-quality GaP, GaP@GaN and GaN@GaP nanowires were grown by a convenient vapor deposition technique. The wire-like and two-layers structures of GaP@GaN and GaN@GaP core-shell nanowires were clearly resolved using X-ray powder diffraction and high-resolution transmission electron microscopy (HRTEM) and their growth directions were identified. Photoluminescence intensity of GaP@GaN nanowires increased as temperature increased. The result was interpreted by the piezoelectric effect induced from lattice mismatch between two semiconductor layers. An unexpected peak at 386 cm-1 was found in the Raman spectra of GaN@GaP and assigned to a surface phonon mode due to the interface. Detailed synthetic conditions and possible growth mechanisms of those nanowires were proposed.

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QUANTUM CONFINEMENT OF EMBEDDED COPPER CLUSTER SANDWICHED BY LITHIUM FLUORIDE

Surface Review and Letters ◽

10.1142/s0218625x96002047 ◽

1996 ◽

Vol 03 (01) ◽

pp. 1143-1146 ◽

Cited By ~ 1

Author(s):

G.H. WANG ◽

H.Q. ZHANG ◽

J.X. MA ◽

M. HAN ◽

Q. WANG ◽

...

Keyword(s):

Lithium Fluoride ◽

Quantum Confinement ◽

Phonon Mode ◽

Metal Clusters ◽

Vibrational Modes ◽

Laser Raman ◽

Copper Clusters ◽

Longitudinal Phonon ◽

Surface Phonon Mode ◽

Fcc Structure

Optical absorption and laser Raman scattering spectroscopies as well as EXAFS are used to investigate the copper clusters embedded in the lithium fluoride, and the results indicate that (i) the metal clusters of about 2 nm in diameter have the bulk-like fcc structure with a contracted interatomic distance and lower mean coordination number, (ii) the embedded metal clusters show a surface-plasmon resonance, (iii) for clusters smaller than certain size the surface-phonon mode becomes important, and the high-order longitudinal phonon vibrational modes emerge.

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PROVING SURFACE PHONON POLARITONS CONTRIBUTION TO THERMAL CONDUCTIVITY IN SIN SUBMICRON FILMS

10.1615/ihtc16.hte.024037 ◽

2018 ◽

Author(s):

Yunhui Wu ◽

Roman Anufriev ◽

Sergei Gluchko ◽

Ryoto Yanagisawa ◽

Laurent Tranchant ◽

...

Keyword(s):

Thermal Conductivity ◽

Surface Phonon ◽

Surface Phonon Polaritons ◽

Phonon Polaritons

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EXPERIMENTAL STUDY OF THE IN-PLANE THERMAL CONDUCTIVITY ENHANCEMENT OF SUSPENDED GLASS THIN FILMS DUE TO LONG RANGE SURFACE PHONON-POLARITONS

10.1615/ihtc16.cip.023810 ◽

2018 ◽

Author(s):

Laurent Tranchant ◽

S. Hamamura ◽

Jose Ordonez-Miranda ◽

Sebastian Volz ◽

Koji Miyazaki

Keyword(s):

Thin Films ◽

Thermal Conductivity ◽

Experimental Study ◽

Long Range ◽

Thermal Conductivity Enhancement ◽

Conductivity Enhancement ◽

Surface Phonon ◽

Surface Phonon Polaritons ◽

Phonon Polaritons

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Tight-binding investigation of the structural and vibrational properties of graphene–single wall carbon nanotube junctions

Nanoscale Advances ◽

10.1039/d0na00881h ◽

2021 ◽

Author(s):

Juhi Srivastava ◽

Anshu Gaur

Keyword(s):

Charge Transfer ◽

Carbon Nanotube ◽

Phonon Mode ◽

Tight Binding ◽

Hybrid Nanostructures ◽

Structural Deformation ◽

Vibrational Properties ◽

Single Wall Carbon Nanotube ◽

Single Wall Carbon ◽

Carbon Nanotube Junctions

The phonon mode frequencies of SWNT and SLG in hybrid nanostructures are sensitive to various interactions, such as vdW forces, structural deformation and/or charge transfer between SWNT and SLG.

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