Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Striped Electron Fluid on (111) KTaO$_3$   A recent study has revealed that the low carrier density electron gas (2DEG)
induced at the interface of EuO and (111) KTaO$_3$ exhibits a broken symmetry
phase with a strong in-plane anisotropy of the resistivity. We present a
minimal tight binding model of this (111) 2DEG, including the large spin-orbit
coupling from the Ta ions, which reveals a hexagonal Fermi surface with a
highly enhanced 2$k_F$ electronic susceptibility. We argue that repulsive
electronic interactions, together with a ferromagnetic EuO substrate, favor a
magnetic stripe instability leading to a partially gapped Fermi surface. Such a
stripe state, or its vestigial nematicity, could explain the observed transport
anisotropy. We propose a $k\cdot p$ theory for the low energy $j=3/2$ states,
which captures the key results from our tight-binding study, and further
reveals the intertwined dipolar and octupolar modulations underlying this
magnetic stripe order. We conclude by speculating on the relation of this
stripe order to the superconductivity seen in this material.

14
The categories of this paper are: math-ph
37
The categories of this paper are: supr-con
32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
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The categories of this paper are: dg-ga
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The categories of this paper are: nucl-th
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The categories of this paper are: hep-ex