Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum interference of surface states in bismuth nanowires probed by
  the Aharonov-Bohm oscillatory behavior of the magnetoresistance   We report the observation of a dependence of the low temperature resistance
of individual single-crystal bismuth nanowires on the Aharonov-Bohm phase of
the magnetic flux threading the wire. 55 and 75-nm wires were investigated in
magnetic fields of up to 14 T. For 55 nm nanowires, longitudinal
magnetoresistance periods of 0.8 and 1.6 T that were observed at magnetic
fields over 4 T are assigned to h/2e to h/e magnetic flux modulation. The same
modes of oscillation were observed in 75-nm wires. The observed effects are
consistent with models of the Bi surface where surface states give rise to a
significant population of charge carriers of high effective mass that form a
highly conducting tube around the nanowire. In the 55-nm nanowires, the Fermi
energy of the surface band is estimated to be 15 meV. An interpretation of the
magnetoresistance oscillations in terms of a subband structure in the surface
states band due to quantum interference in the tube is presented.

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The categories of this paper are: alg-geom
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The categories of this paper are: nucl-th
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The categories of this paper are: cmp-lg
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The categories of this paper are: stat
0
The categories of this paper are: hep-ph
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The categories of this paper are: econ
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The categories of this paper are: math-ph
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The categories of this paper are: funct-an
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The categories of this paper are: eess
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The categories of this paper are: cs
3
The categories of this paper are: physics
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The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
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The categories of this paper are: math
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The categories of this paper are: solv-int
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The categories of this paper are: acc-phys