Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A facile approach to calculating superconducting transition temperatures
  in the bismuth solid phases   All solid phases of bismuth under pressure, but one, have been experimentally
found to superconduct. From Bi-I to Bi-V, avoiding Bi-IV, they become
superconductors and perhaps Bi-IV may also become superconductive. To
investigate the influence of the electronic properties N(E) and the vibrational
properties F({\omega}) on their superconductivity we have ab initio calculated
them for the corresponding experimental crystalline structures, and using a BCS
approach have been able to determine their critical temperatures Tc obtaining
results close to experiment: For Bi-I (The Wyckoff Phase) we predicted a
transition temperature of less than 1.3 mK and a year later a Tc of 0.5 mK was
measured; for Bi-II Tc is 3.9 K measured and 3.6 K calculated; Bi-III has a
measured Tc of 7 K and 6.5 K calculated for the structure reported by Chen et
al., and for Bi-V Tc ~ 8 K measured and 6.8 K calculated. Bi-IV has not been
found to be a superconductor but we have recently predicted a Tc of 4.25 K.

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The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga
3
The categories of this paper are: physics
20
The categories of this paper are: acc-phys
23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
17
The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph