Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin Current Generation and Detection in the Presence of AC Gate   We predict that in a narrow gap III-V semiconductor quantum well or a wire an
observable spin current can be generated with a time dependent gate to modify
the Rashba spin-orbit coupling constant. Methods to rectify the so generated AC
current are discussed. An all-electric method of spin current detection is
suggested, which measures the voltage on the gate in the vicinity of a 2D
electron gas carrying a time dependent spin current. Both the generation and
detection do not involve any optical or magnetic mediators.

23
The categories of this paper are: solv-int
16
The categories of this paper are: stat
6
The categories of this paper are: astro-ph
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
7
The categories of this paper are: hep-th
17
The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph
2
The categories of this paper are: math
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
32
The categories of this paper are: atom-ph