Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The specific heat and magnetic properties of a spin-1/2 ladder including
  butterfly-shaped unit blocks   The specific heat, structural characterization, and magnetic property studies
of a new spin ladder with the geometry of butterfly-shaped configuration are
reported. The model introduced here is an infinite spin ladder-type including
spin-1/2 particle for which unit blocks consist of two butterflies connected
together through their bodies (Body-Body bridges). Localized spins on the wings
of butterflies have XXZ Heisenberg interaction with two extra spin-1/2
particles assumed in the center of each cage (unit block), while they have pure
Ising-type interaction with those spins that are localized on the bodies.
Hence, there are six interstitial spins and four nodal spins (Body-Body
interaction) per block. To obtain the partition function of this model, we use
the transfer matrix approach, then we examine the magnetization process, as
well as, the specific heat of the model. Interestingly, we see a wide plateau
at $\frac{5}{6}$ of the saturation magnetization that is strongly dependent on
the magnetic field and anisotropy variations. Moreover, some unexpected
phenomena are observed in the low-temperature limit, such as anomalous
triple-peak in the specific heat function which gradually turns to a
double-peak upon increasing the magnetic field and/or anisotropic Heisenberg
coupling, due to the ferromagnetic phase predomination.

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The categories of this paper are: supr-con
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The categories of this paper are: acc-phys
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The categories of this paper are: cmp-lg
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The categories of this paper are: comp-gas
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The categories of this paper are: adap-org
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The categories of this paper are: hep-th
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The categories of this paper are: plasm-ph
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The categories of this paper are: math-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-lat
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The categories of this paper are: hep-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: patt-sol
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The categories of this paper are: q-alg
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The categories of this paper are: dg-ga