Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Interaction induced staggered spin-orbit order in two-dimensional
  electron gas   We propose and formulate an interaction induced staggered spin-orbit order as
a new emergent phase of two-dimensional Fermi gases. We show that when some
form of inherent spin-splitting via Rashba-type spin-orbit coupling renders two
helical Fermi surfaces to become significantly `nested', a Fermi surface
instability arises. To lift this degeneracy, a spontaneous symmetry breaking
spin-orbit density wave develops, causing a surprisingly large quasiparticle
gapping with chiral electronic states. Since the staggered spin-orbit order is
associated with a condensation energy, quantified by the gap value, destroying
such spin-orbit interaction costs sufficiently large perturbation field or
temperature or de-phasing time. BiAg$_2$ surface state is shown to be a
representative system for realizing such novel spin-orbit interaction with
tunable and large strength, and the spin-splitting is decoupled from charge
excitations. These functional properties are relevant for spin-electronics,
spin-caloritronics, and spin-Hall effect applications.

35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph
10
The categories of this paper are: q-bio
24
The categories of this paper are: dg-ga
5
The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
37
The categories of this paper are: supr-con
3
The categories of this paper are: physics
6
The categories of this paper are: astro-ph
14
The categories of this paper are: math-ph
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
19
The categories of this paper are: eess