Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Anomalous orbital structure in a spinel-perovskite interface
  $\gamma$-Al$_2$O$_3$/SrTiO$_3$   In all archetypical reported (001)-oriented perovskite heterostructures, it
has been deduced that the preferential occupation of two-dimensional electron
gases is in-plane $d_\textrm{xy}$ state. In sharp contrast to this, the
investigated electronic structure of a spinel-perovskite heterostructure
$\gamma$-Al$_2$O$_3$/SrTiO$_3$ by resonant soft X-ray linear dichroism,
demonstrates that the preferential occupation is out-of-plane
$d_\textrm{xz}$/$d_\textrm{yz}$ states for interfacial electrons. Moreover, the
impact of strain further corroborates that this anomalous orbital structure can
be linked to the altered crystal field at the interface and symmetry breaking
of the interfacial structural units. Our findings provide another interesting
route to engineer emergent quantum states with deterministic orbital symmetry.

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The categories of this paper are: math-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: q-fin
31
The categories of this paper are: ao-sci
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The categories of this paper are: alg-geom
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
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The categories of this paper are: acc-phys
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The categories of this paper are: solv-int
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The categories of this paper are: chao-dyn
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The categories of this paper are: nlin
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The categories of this paper are: mtrl-th
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The categories of this paper are: bayes-an
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The categories of this paper are: eess
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The categories of this paper are: quant-ph
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The categories of this paper are: patt-sol