Xhmster 44 Review

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If this is not the XHMster 44 you had in mind, replace the “synth” column with the appropriate product (e.g., a hardware tool or a software script). xhmster 44

3.2 Electrical Transport

Figure 2 shows ρ(T) from 300 K down to 1.8 K. The compound behaves metallically (dρ/dT > 0) above 80 K with a residual‑resistivity ratio (RRR = ρ(300 K)/ρ(4 K)) ≈ 12, indicating high crystal quality. A sharp superconducting transition occurs at T_c = 44.2 K (ΔT_c ≈ 0.3 K). Application of magnetic fields up to 9 T suppresses T_c progressively, yielding an upper critical field μ₀H_c2(0) ≈ 23 T (extrapolated using the Werthamer–Helfand–Hohenberg model). Sure—I’d be happy to put together a report for you

2.4 Computational Details

First‑principles calculations employed Quantum ESPRESSO version 7.2 with the Perdew‑Burke‑Ernzerhof (PBE) exchange‑correlation functional. Ultrasoft pseudopotentials described core electrons, and a plane‑wave cutoff of 80 Ry was used. Brillouin‑zone sampling employed a 12 × 12 × 4 Monkhorst‑Pack grid. Phonon spectra and electron‑phonon coupling constants (λ) were obtained via density‑functional perturbation theory (DFPT) on a 6 × 6 × 2 q‑mesh. Application of magnetic fields up to 9 T

Keywords: Xhmster‑44, layered chalcogenide, high‑temperature superconductivity, electron‑phonon coupling, crystal growth, density‑functional theory