Magnetoplasmons and persistent currents in cylindrical tubules

Journal Article · Sun Aug 15 00:00:00 EDT 1993 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.48.5567· OSTI ID:6241749

Lin, M F ^[1]; Shung, K W ^[2]

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1. Physics Department, National Tsing Hua University, Hsinchu, Taiwan 30043 (Taiwan, Province of China)
2. Physics Department, National Tsing Hua University, Hsinchu, Taiwan 30043 (Taiwan, Province of China) Department of Physics and Astronomy, The University of Tennessee, Knoxville, Tennessee 37996 (United States) Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)

The quasi-one-dimensional (1D) magnetoplasmons of a graphene tubule threaded by a magnetic field ([ital B]) have been evaluated exactly within the random-phase approximation. The plasmon frequency [ital w][sub [ital p]] exhibits a very rich structure as a function of the magnetic flux through the tubule ([phi])---including many cusps. The [phi]-dependent part of [ital w][sub [ital p]] is shown to be proportional to the induced persistent-current density ([ital J]) in the tubule. Measurements on [ital w][sub [ital p]] and [ital J] are expected to reveal insights regarding the band properties of the quasi-1D system. The structure near the cusps has been examined and is found to be related to important band parameters (e.g., the effective mass of the electrons). The results of this study may be easily generalized to systems composed of several coaxial tubules. The importance of the spin-[ital B] interaction in graphene tubules is indicated.

• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6241749
• Journal Information: Physical Review, B: Condensed Matter; (United States), Vol. 48:8; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CARBON
TUBES
CURRENT DENSITY
CYLINDERS
EFFECTIVE MASS
MAGNETIC FIELDS
ONE-DIMENSIONAL CALCULATIONS
PLASMONS
RANDOM PHASE APPROXIMATION
ELEMENTS
MASS
NONMETALS
QUASI PARTICLES
665430* - Other Topics in Quantum Fluids & Solids- (1992-)