Direct observation of Tomonaga-Luttinger-liquid state in carbon nanotubes at low temperatures
Article Abstract:
Metallic single-walled carbon nanotubes (SWNTs) are considered to be ideal one-dimensional systems for realizing Tomonaga-Luttinger-liquid (TLL) states. Angle-integrated photoemission measurements of SWNTs are reported. Results revealed an oscillation in the pie-electron density of states owing to one-dimensional van Hove singularities, confirming the one-dimensional nature of the valence band.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2003
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Experimental observation of symmetry-breaking nonlinear modes in an active ring
Article Abstract:
Modes consisting of one or several solitons rotate around the ring, the topology of which imposes additional constraints on their allowed frequencies and phases. The mode spectrum of spin-wave solitons is measured in a nonlinear active ring constructed from a magnetic ferrite film.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2003
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Observation of rare-earth segregation in silicon nitride ceramics at subnanometre dimensions
Article Abstract:
The principles of micrometre-scale structural design are used to improve the mechanical properties of ceramics, which represents a step towards the atomic-level structural engineering. The direct images of dopant atoms (La) within the nanometre-scale are shown.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2004
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