Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Shot noise of spin current   We report an exact solution for the noise spectrum of spin-current without
charge-current in a spin field effect transistor (SFET). For the SFET with two
leads, it is found that both auto- and cross-correlation functions are needed
to characterize the noise of spin-current. A shot noise is also generated for
the charge-current even though the net charge-current is identically zero. The
noise spectra of spin-current and charge-current depends on the coupling
strength between the SFET and the leads, and they may behave qualitatively
differently. We also present results of noise spectra in the adiabatic regime.

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The categories of this paper are: hep-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: physics
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The categories of this paper are: chao-dyn
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The categories of this paper are: q-fin
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The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
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The categories of this paper are: nlin
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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: astro-ph
30
The categories of this paper are: q-alg
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The categories of this paper are: patt-sol
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The categories of this paper are: gr-qc
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The categories of this paper are: acc-phys
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The categories of this paper are: funct-an