Magnetoelectronic states of carbon toroids

F. L. Shyu; C. C. Tsai; C. P. Chang; R. B. Chen; M. F. Lin

doi:10.1016/j.carbon.2004.06.032

Magnetoelectronic states of carbon toroids

F. L. Shyu, C. C. Tsai, C. P. Chang, R. B. Chen, M. F. Lin

Department of Physics

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

Magnetoelectronic states of carbon toroids have been studied within the tight-binding model. These states are mainly determined by the magnitude and the direction of the magnetic field, and the toroid geometry (chiral angle, height, and radius). The magnetic field can make the angular momentum (L) along the longitudinal direction undergo both a large shift and strong coupling. This effect leads to the destruction of state degeneracy, the change of energy spacing, the alternation of quantization of wave function, the vanishing of periodic Aharonov-Bohm oscillations, and the semiconductor-metal transition (SMT). Armchair carbon toroids are quite different from zigzag carbon toroids in features such as state degeneracy, energy gap, existence of the SMT, and dependence on the magnetic field.

Original language	English
Pages (from-to)	2879-2885
Number of pages	7
Journal	Carbon
Volume	42
Issue number	14
DOIs	https://doi.org/10.1016/j.carbon.2004.06.032
Publication status	Published - 2004

All Science Journal Classification (ASJC) codes

Chemistry(all)
Materials Science(all)

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10.1016/j.carbon.2004.06.032

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title = "Magnetoelectronic states of carbon toroids",

abstract = "Magnetoelectronic states of carbon toroids have been studied within the tight-binding model. These states are mainly determined by the magnitude and the direction of the magnetic field, and the toroid geometry (chiral angle, height, and radius). The magnetic field can make the angular momentum (L) along the longitudinal direction undergo both a large shift and strong coupling. This effect leads to the destruction of state degeneracy, the change of energy spacing, the alternation of quantization of wave function, the vanishing of periodic Aharonov-Bohm oscillations, and the semiconductor-metal transition (SMT). Armchair carbon toroids are quite different from zigzag carbon toroids in features such as state degeneracy, energy gap, existence of the SMT, and dependence on the magnetic field.",

author = "Shyu, {F. L.} and Tsai, {C. C.} and Chang, {C. P.} and Chen, {R. B.} and Lin, {M. F.}",

note = "Funding Information: This work was supported in part by the National Science Council of Taiwan, the Republic of China under Grant Nos. NSC 92-2112-M-145-001, NSC 92-2112-M-006-014; NSC 92-2112-M-165-001.",

year = "2004",

doi = "10.1016/j.carbon.2004.06.032",

language = "English",

volume = "42",

pages = "2879--2885",

journal = "Carbon",

issn = "0008-6223",

publisher = "Elsevier Limited",

number = "14",

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TY - JOUR

T1 - Magnetoelectronic states of carbon toroids

AU - Shyu, F. L.

AU - Tsai, C. C.

AU - Chang, C. P.

AU - Chen, R. B.

AU - Lin, M. F.

N1 - Funding Information: This work was supported in part by the National Science Council of Taiwan, the Republic of China under Grant Nos. NSC 92-2112-M-145-001, NSC 92-2112-M-006-014; NSC 92-2112-M-165-001.

PY - 2004

Y1 - 2004

N2 - Magnetoelectronic states of carbon toroids have been studied within the tight-binding model. These states are mainly determined by the magnitude and the direction of the magnetic field, and the toroid geometry (chiral angle, height, and radius). The magnetic field can make the angular momentum (L) along the longitudinal direction undergo both a large shift and strong coupling. This effect leads to the destruction of state degeneracy, the change of energy spacing, the alternation of quantization of wave function, the vanishing of periodic Aharonov-Bohm oscillations, and the semiconductor-metal transition (SMT). Armchair carbon toroids are quite different from zigzag carbon toroids in features such as state degeneracy, energy gap, existence of the SMT, and dependence on the magnetic field.

AB - Magnetoelectronic states of carbon toroids have been studied within the tight-binding model. These states are mainly determined by the magnitude and the direction of the magnetic field, and the toroid geometry (chiral angle, height, and radius). The magnetic field can make the angular momentum (L) along the longitudinal direction undergo both a large shift and strong coupling. This effect leads to the destruction of state degeneracy, the change of energy spacing, the alternation of quantization of wave function, the vanishing of periodic Aharonov-Bohm oscillations, and the semiconductor-metal transition (SMT). Armchair carbon toroids are quite different from zigzag carbon toroids in features such as state degeneracy, energy gap, existence of the SMT, and dependence on the magnetic field.

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SN - 0008-6223

VL - 42

SP - 2879

EP - 2885

JO - Carbon

JF - Carbon

IS - 14

ER -

Magnetoelectronic states of carbon toroids

Abstract

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