Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Prediction of Near-Room-Temperature Quantum Anomalous Hall Effect on
  Honeycomb Materials   Recently, this long-sought quantum anomalous Hall effect was realized in the
magnetic topological insulator. However, the requirement of an extremely low
temperature (approximately 30 mK) hinders realistic applications. Based on
\textit{ab-initio} band structure calculations, we propose a quantum anomalous
Hall platform with a large energy gap of 0.34 and 0.06 eV on honeycomb lattices
comprised of Sn and Ge, respectively. The ferromagnetic order forms in one
sublattice of the honeycomb structure by controlling the surface
functionalization rather than dilute magnetic doping, which is expected to be
visualized by spin polarized STM in experiment. Strong coupling between the
inherent QSH state and ferromagnetism results in considerable exchange
splitting and consequently an FM insulator with a large energy gap. The
estimated mean-field Curie temperature is 243 and 509 K for Sn and Ge lattices,
respectively. The large energy gap and high Curie temperature indicate the
feasibility of the QAH effect in the near-room-temperature and even
room-temperature regions.

37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
33
The categories of this paper are: plasm-ph
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
13
The categories of this paper are: quant-ph
24
The categories of this paper are: dg-ga
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
1
The categories of this paper are: cs
30
The categories of this paper are: q-alg
26
The categories of this paper are: bayes-an