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Electron orbital valves made of multiply connected carbon nanotubes | | Gunn Kim
; Sang Bong Lee
; Hoon-Kyung Lee
; Jisoon Ihm
; | | Date: |
27 Jun 2006 | | Subject: | Other | | Abstract: | Using the tight-binding method and the Landauer-B"{u}ttiker conductance formalism, we demonstrate that a multiply connected carbon nanotube system with a mirror-reflection symmetry can sustain an electron current of the $pi$-bonding orbital while suppress that of the $pi$-antibonding orbital over a certain energy range. Accordingly, the system behaves like an electron orbital valve and may be used as a scanning tunneling microscope to probe the orbital characters of d-wave superconductors or even orbital ordering in solids which is believed to occur in some transition-metal oxides. | | Source: | arXiv, cond-mat/0606668 | | Services: | Forum | Review | PDF | Favorites | |
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