Electron-phonon contribution in aluminene: Superconductive and transport properties

Electron–Phonon Superconductivity in Boron‐Based Chalcogenide (X= S, Se) Monolayers

“…Acoustic phonons exhibit a small phonon linewidth as expected and inferred from other systems like aluminene and stanene. [ 37,46 ] In compound $$B_{3}S$$, the linewidth associated with the out‐of‐plane transverse and longitudinal optical modes (ZO, TO, LO) significantly exceed the maximum phonon linewidth in $$BN$$ monolayer [ 73 ] and $$MoS_{2}$$. [ 74 ] Also, $$B_{3}Se$$ compound exhibits much higher phonon linewidth compared to the tungsten diselenide $$WSe_{2}$$.…”

“…The main indicator on superconductivity is the critical temperature, which separates the behavior of the material between superconductivity and the normal state by using the Allen–Dynes formula under the Coulomb screened constant $$\mu ^{\ast }=0.10$$ used mainly in the literature. [ 46,89 ] The critical temperature for B 3 S is 20 K while it is 10.5 K for B 3 Se. Therefore, the $$T_{C}$$ of $$B_{3}S$$ is twice bigger than that of $$B_{3}Se$$ and is higher than the 13.2 K reported for the calcium‐decorated hexagonal boron nitride monolayer, [ 90 ] Li‐decorated graphene showing a $$T_{C}=5.9$$ K, [ 91 ] Ca‐intercalated bilayer graphene exhibiting phonon‐mediated superconductivity with a $$T_{C}$$ in the range [6.8 − 8.1] K, [ 92 ] and GaB 6 presenting 14.5 K .…”

“…[45] Moreover, it has been reported in ref. [46] that aluminene can superconduct with temperatures below 8.8, and 10 K for strained silicene. [47] Due to its metallic character, borophene in a rectangular buckled configuration presents a high anisotropy with a critical temperature up to 22 K. [48] This breakthrough spearheaded the discovery of superconductivity in many binary compounds such as MgB 2 with the deposition of a few layers, which get 30 K [49] and hexagonal MB 6 (M = Mg, Ca, Sc, Ti).…”

“…[ 45 ] Moreover, it has been reported in ref. [46] that aluminene can superconduct with temperatures below 8.8, and 10 K for strained silicene. [ 47 ] Due to its metallic character, borophene in a rectangular buckled configuration presents a high anisotropy with a critical temperature up to 22 K .…”

Single-Element 2D Materials beyond Graphene: Methods of Epitaxial Synthesis

“…Aluminene and antimonene are proposed as materials for creating nanocapacitors due to their high ability to accumulate the charge [129]. In addition, superconducting states are also predicted for aluminene and gallenene [130,131]. Possible spheres of single-element 2D materials applications are summarized in Table 5.…”