Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin transport with traps: dramatic narrowing of the Hanle curve   We study theoretically the spin transport in a device in which the active
layer is an organic film with numerous deep in-gap levels serving as traps. A
carrier, diffusing between magnetized injector and detector, spends a
considerable portion of time on the traps. This new feature of transport does
not affect the giant magnetoresistance, which is sensitive only to the mutual
orientation of magnetizations of the injector and detector. By contrast, the
presence of traps strongly affects the sensitivity of the spin transport to
external magnetic field perpendicular to the magnetizations of the electrodes
(the Hanle effect). Namely, the Hanle curve narrows dramatically. The origin of
such a narrowing is that the spin precession takes place during the entire time
of the carrier motion between the electrodes, while the spin relaxation takes
place only during diffusive motion between the subsequent traps. If the
resulting width of the Hanle curve is smaller than the measurement resolution,
observation of the Hanle peak becomes impossible.

32
The categories of this paper are: atom-ph
24
The categories of this paper are: dg-ga
25
The categories of this paper are: patt-sol
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
23
The categories of this paper are: solv-int
22
The categories of this paper are: chao-dyn
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
37
The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th