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- Surface_phonon abstract "In solid state physics, a surface phonon is the quantum of a lattice vibration mode associated with a solid surface. Similar to the ordinary lattice vibrations in a bulk solid (whose quanta are simply called phonons), the nature of surface vibrations depends on details of periodicity and symmetry of a crystal structure. Surface vibrations are however distinct from the bulk vibrations, as they arise from the abrupt termination of a crystal structure at the surface of a solid. Knowledge of surface phonon dispersion gives important information related to the amount of surface relaxation, the existence and distance between an adsorbate and the surface, and information regarding presence, quantity, and type of defects existing on the surface.In modern semiconductor research, surface vibrations are of interest as they can couple with electrons and thereby affect the electrical and optical properties of semiconductor devices. They are most relevant for devices where the electronic active area is near a surface, as is the case in two-dimensional electron systems and in quantum dots. As a specific example, the decreasing size of CdSe quantum dots was found to result in increasing frequency of the surface vibration resonance, which can couple with electrons and affect their properties.Two methods are used for modeling surface phonons. One is the "slab method", which approaches the problem using lattice dynamics for a solid with parallel surfaces, and the other is based on Green’s functions. Which of these approaches is employed is based upon what type of information is required from the computation. For broad surface phonon phenomena, the conventional lattice dynamics method can be used; for the study of lattice defects, resonances, or phonon state density, the Green’s function method yields more useful results.".
- Surface_phonon thumbnail Lattice_wave.svg?width=300.
- Surface_phonon wikiPageID "14558397".
- Surface_phonon wikiPageRevisionID "581313527".
- Surface_phonon hasPhotoCollection Surface_phonon.
- Surface_phonon subject Category:Bosons.
- Surface_phonon subject Category:Condensed_matter_physics.
- Surface_phonon type Body109224911.
- Surface_phonon type Boson109226997.
- Surface_phonon type Bosons.
- Surface_phonon type NaturalObject100019128.
- Surface_phonon type Object100002684.
- Surface_phonon type Particle109386422.
- Surface_phonon type PhysicalEntity100001930.
- Surface_phonon type Whole100003553.
- Surface_phonon comment "In solid state physics, a surface phonon is the quantum of a lattice vibration mode associated with a solid surface. Similar to the ordinary lattice vibrations in a bulk solid (whose quanta are simply called phonons), the nature of surface vibrations depends on details of periodicity and symmetry of a crystal structure. Surface vibrations are however distinct from the bulk vibrations, as they arise from the abrupt termination of a crystal structure at the surface of a solid.".
- Surface_phonon label "Surface phonon".
- Surface_phonon sameAs m.03d7wry.
- Surface_phonon sameAs Q7646004.
- Surface_phonon sameAs Q7646004.
- Surface_phonon sameAs Surface_phonon.
- Surface_phonon wasDerivedFrom Surface_phonon?oldid=581313527.
- Surface_phonon depiction Lattice_wave.svg.
- Surface_phonon isPrimaryTopicOf Surface_phonon.
