Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Identification of Magnetic Interactions and High-field Quantum Spin
  Liquid in $\alpha$-RuCl$_3$   The frustrated magnet $\alpha$-RuCl$_3$ constitutes a fascinating quantum
material platform that harbors the intriguing Kitaev physics. However, a
consensus on its intricate spin interactions and field-induced quantum phases
has not been reached yet. Here we exploit multiple state-of-the-art many-body
methods and determine the microscopic spin model that quantitatively explains
major observations in $\alpha$-RuCl$_3$, including the zigzag order,
double-peak specific heat, magnetic anisotropy, and the characteristic M-star
dynamical spin structure, etc. According to our model simulations, the in-plane
field drives the system into the polarized phase at about 7 T and a thermal
fractionalization occurs at finite temperature, reconciling observations in
different experiments. Under out-of-plane fields, the zigzag order is
suppressed at 35 T, above which, and below a polarization field of 100 T level,
there emerges a field-induced quantum spin liquid. The fractional entropy and
algebraic low-temperature specific heat unveil the nature of a gapless spin
liquid, which can be explored in high-field measurements on $\alpha$-RuCl$_3$.

18
The categories of this paper are: econ
32
The categories of this paper are: atom-ph
2
The categories of this paper are: math
13
The categories of this paper are: quant-ph
10
The categories of this paper are: q-bio
23
The categories of this paper are: solv-int
14
The categories of this paper are: math-ph
3
The categories of this paper are: physics
6
The categories of this paper are: astro-ph
1
The categories of this paper are: cs
12
The categories of this paper are: nucl-th
19
The categories of this paper are: eess
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex
34
The categories of this paper are: chem-ph