Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Thermally-Limited Current Carrying Ability of Graphene Nanoribbons   We investigate high-field transport in graphene nanoribbons (GNRs) on SiO2,
up to breakdown. The maximum current density is limited by self-heating, but
can reach >3 mA/um for GNRs ~15 nm wide. Comparison with larger, micron-sized
graphene devices reveals that narrow GNRs benefit from 3D heat spreading into
the SiO2, which enables their higher current density. GNRs also benefit from
lateral heat flow to the contacts in short devices (< ~0.3 um), which allows
extraction of a median GNR thermal conductivity (TC), ~80 W/m/K at 20 C across
our samples, dominated by phonons. The TC of GNRs is an order of magnitude
lower than that of micron-sized graphene on SiO2, suggesting strong roles of
edge and defect scattering, and the importance of thermal dissipation in small
GNR devices.

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The categories of this paper are: hep-th
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The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
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The categories of this paper are: eess
20
The categories of this paper are: acc-phys
2
The categories of this paper are: math
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
29
The categories of this paper are: funct-an
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
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The categories of this paper are: q-bio
23
The categories of this paper are: solv-int