Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Valley blockade and multielectron spin-valley Kondo effect in silicon   We report on the valley blockade and the multielectron Kondo effect generated
by an impurity atom in a silicon nano field effect device. According to the
spin-valley nature of tunnelling processes, and consistently with those allowed
by the valley blockade regime, the manifestation of Kondo effect obeys to the
periodicity 4 of the electron filling sequence typical of silicon emerging at
occupation N=1, 2, 3. The spin-valley Kondo effect emerges under different
kinds of screening depending on the electron filling. By exploiting the valley
blockade regime, valley index conservation in the Kondo SU(4) is deduced
without the employment of an external magnetic field. Microwave irradiation
suppresses the Kondo effect at occupancies up to three electrons.

23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
18
The categories of this paper are: econ
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
15
The categories of this paper are: nucl-ex
27
The categories of this paper are: comp-gas
19
The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
13
The categories of this paper are: quant-ph
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc