Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Signatures of exchange correlations in the thermopower of quantum dots   We use a many-body rate-equation approach to calculate the thermopower of a
quantum dot in the presence of an exchange interaction. At temperatures much
smaller than the single-particle level spacing, the known quantum jumps
(discontinuities) in the thermopower are split by the exchange interaction. The
origin and nature of the splitting are elucidated with a simple physical
argument based on the nature of the intermediate excited state in the
sequential tunneling approach. We show that this splitting is sensitive to the
number parity of electrons in the dot and the dot's ground-state spin. These
effects are suppressed when cotunneling dominates the electrical and thermal
conductances. We calculate the thermopower in the presence of elastic
cotunneling, and show that some signatures of exchange correlations should
still be observed with current experimental methods. In particular, we propose
a method to determine the strength of the exchange interaction from
measurements of the thermopower.

9
The categories of this paper are: nlin
20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
3
The categories of this paper are: physics
23
The categories of this paper are: solv-int
27
The categories of this paper are: comp-gas
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
7
The categories of this paper are: hep-th
21
The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg
11
The categories of this paper are: hep-lat
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The categories of this paper are: eess
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
22
The categories of this paper are: chao-dyn