Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Giant atomic magnetocrystalline anisotropy from degenerate orbitals
  around Fermi level   Nano-structures with giant magnetocrystalline anisotropy energies (MAE) are
desired in designing miniaturized magnetic storage and quantum computing
devices. Through ab initio and model calculations, we propose that special
p-element dimers and single-adatom on symmetry-matched substrates possess giant
atomic MAE of 72-200 meV with room temperature structural stability. The huge
MAE originates from degenerate orbitals around Fermi level. More importantly,
we developed a simplified quantum mechanical model to understand the principle
on how to obtain giant MAE for supported magnetic structures. These discoveries
and mechanisms provide a paradigm to design giant atomic MAE in nanostructures.

22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
13
The categories of this paper are: quant-ph
23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
17
The categories of this paper are: q-fin
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph