Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A new relation between the hot electron power loss and acoustic phonon
  limited mobility in Bloch-Gr\"uneisen regime   Expressions for the electron power loss F(T) and mobility {\mu}_p due to
acoustic phonon scattering are given in the Bloch-Gr\"uneisen (BG) regime for
three- and two- dimensional electron gas in semiconductors and Dirac-fermions.
We obtain a simple relation F(T) {\mu}_p = {\eta}ev_s^2, where {\eta} (~1) is a
constant, e is the electron charge and v_s is acoustic phonon velocity. It is
found to be independent of temperature and electron concentration. This
relation is applied to GaAs heterojucntions and graphene, to obtain {\mu}_p
from the measured F(T). We propose that, using this relation, the measurements
of F(T), in BG regime, which depends exclusively upon acoustic phonons
coupling, could serve as a tool to determine the low temperature {\mu}_p, which
is otherwise difficult to measure due to the contributions from disorders

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The categories of this paper are: alg-geom
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The categories of this paper are: math-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: chao-dyn
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The categories of this paper are: atom-ph
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The categories of this paper are: supr-con
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The categories of this paper are: mtrl-th
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The categories of this paper are: astro-ph
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The categories of this paper are: solv-int
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The categories of this paper are: chem-ph
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The categories of this paper are: q-alg
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The categories of this paper are: acc-phys
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The categories of this paper are: physics
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The categories of this paper are: ao-sci
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The categories of this paper are: cmp-lg
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The categories of this paper are: econ