Carbon nanotubes for coherent spintronics
نویسندگان
چکیده
منابع مشابه
Carbon nanotubes for coherent spintronics
Carbon nanotubes (NTs) have been studied by material scientists since 19521, but became a worldwide research focus only after fullerenes were discovered and after single-walled carbon nanotubes (SWNTs) were introduced to the research community in 19932. The simplicity of their synthesis and the diversity of their properties3 quickly propelled NTs into electronics, optics, nanoand biotechnology ...
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With the end of Moore's law in sight, researchers are in search of an alternative approach to manipulate information. Spintronics or spin-based electronics, which uses the spin state of electrons to store, process and communicate information, offers exciting opportunities to sustain the current growth in the information industry. For example, the discovery of the giant magneto resistance (GMR) ...
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We review recent studies of coherent phonons (CPs) corresponding to the radial breathing mode (RBM) and G-mode in single-wall carbon nanotubes (SWCNTs) and graphene. Because of the bandgap-diameter relationship, RBM-CPs cause bandgap oscillations in SWCNTs, modulating interband transitions at terahertz frequencies. Interband resonances enhance CP signals, allowing for chirality determination. U...
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We have generated and detected coherent lattice vibrations in single-walled carbon nanotubes corresponding to the radial breathing mode (RBM) using ultrashort laser pulses. Because the band gap is a function of diameter, these RBM-induced diameter oscillations cause ultrafast band gap oscillations, thereby modulating the interband excitonic resonances at the phonon frequencies (3-9 THz). Excita...
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ژورنال
عنوان ژورنال: Materials Today
سال: 2010
ISSN: 1369-7021
DOI: 10.1016/s1369-7021(10)70030-4