Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Electrical properties of inhomogeneous tungsten carbide Schottky barrier
  on 4H-SiC   In this paper, the electrical behavior of tungsten carbide (WC) Schottky
barrier on 4H-SiC was investigated. First, a statistical current-voltage (I-V)
analysis in forward bias, performed on a set of equivalent diodes, showed a
symmetric Gaussian-like distribution of the barrier heights after annealing at
700{\deg}C, where a low Schottky barrier height ($\Phi$B=1.05 eV) and an
ideality factor n=1.06 were measured. The low value of the barrier height makes
such a WC contact an interesting candidate to reduce the conduction losses in
4H-SiC Schottky diodes. A deeper characterization has been carried out, by
monitoring the temperature dependence of the I-V characteristics and the
behavior of the relevant parameters $\Phi$B and n. The increase of the barrier
height and decrease of the ideality factor with increasing temperature
indicated a lateral inhomogeneity of the WC/4H-SiC Schottky contact, which was
described by invoking the Tung's model. Interestingly, the temperature
dependence of the leakage current under reverse bias could be described by
considering in the thermionic field emission model the temperature dependent
barrier height related to the inhomogeneity. These results can be useful to
predict the behavior of WC/4H-SiC Schottky diodes under operative conditions.

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The categories of this paper are: math
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The categories of this paper are: q-bio
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The categories of this paper are: eess
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The categories of this paper are: nucl-th
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The categories of this paper are: hep-lat
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The categories of this paper are: bayes-an
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The categories of this paper are: atom-ph
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The categories of this paper are: stat
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The categories of this paper are: ao-sci
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The categories of this paper are: econ
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The categories of this paper are: supr-con
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The categories of this paper are: adap-org
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The categories of this paper are: cs
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The categories of this paper are: quant-ph
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The categories of this paper are: hep-ph
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The categories of this paper are: chao-dyn