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Magnetic properties of strained single-walled carbon nanotubes
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View: Figures


Image of FIG. 1.
FIG. 1.

DOS near the Fermi level of a (21, 0) SWCNT at different fluxes obtained from the method of Green’s function (solid lines) and the theory from Ref. 19 (dot lines). Values on the right side are stretching strains, and the energy interval between the lowest VHS positions is the gap.

Image of FIG. 2.
FIG. 2.

Critical flux for semiconductor-metal transition as functions of strains and the asymmetrical effects caused by negative and positive strains. The slopes of the critical magnetic flux vs strain as functions of the chirality angle for SWCNTs with . (a) and (c) show the case of uniaxial strain, while (c) and (d) represent the case of torsion ( for net bond stretching and for net bond compression). The “abs” represents the absolute value, and .

Image of FIG. 3.
FIG. 3.

Susceptibility per nanometer of the strained SWCNTs and the susceptibility peak caused by the strains. (a) The effects of uniaxial strain on the susceptibility of three types of SWCNTs at temperature of , where triangles represent the case of (60, 0) SWCNT at temperature of for comparison. (b) The effects of torsion on the susceptibility at temperature of , where triangles exhibit the case of (20, 10) SWCNT at temperature of . . The first peak of each curve is denoted by a square. The dot lines denote the value of zero susceptibility, and the numbers which denote the peak values are in unit of .


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Magnetic properties of strained single-walled carbon nanotubes