Valentina Martelli

collaborators

3 papers

cond-mat.mtrl-sci2025

Two lock-in amplifiers based $3 I ¨ $ technique: a practical guide for thermal conductivity experiments in bulk samples

Alexandre Henriques, Murilo Santoma, Steffen Wirth +2

The accurate determination of thermal conductivity $I^º (T)$ in bulk materials at room temperature and above is crucial for evaluating their compatibility for specific applications.…

cond-mat.mtrl-sci2024

Role of native point defects and Hg impurities in the electronic properties of Bi $_{4}$ I $_{4}$

Gustavo H. Cassemiro, C. David Hinostroza, Leandro Rodrigues de Faria +8

We studied the effects of point defects and Hg impurities in the electronic properties of bismuth iodide (Bi $_{4}$ I $_{4}$ ). Our transport measurements after annealing at different temp…

cond-mat.mtrl-sci2024

Structural investigation of the quasi-one-dimensional topological insulator Bi $_{4}$ I $_{4}$

C. David Hinostroza, Leandro Rodrigues de Faria, Gustavo H. Cassemiro +4

The bismuth-halide Bi $_{4}$ I $_{4}$ undergoes a structural transition around $T_{P} \sim 300$ K, which separates a high-temperature $I^^{2}$ phase ( $T > T_{P}$ ) from a low-temperature $I^\pm$ phase ($…

Two lock-in amplifiers based 3I¨ technique: a practical guide for thermal conductivity experiments in bulk samples

Role of native point defects and Hg impurities in the electronic properties of Bi4​I4​

Structural investigation of the quasi-one-dimensional topological insulator Bi4​I4​

Two lock-in amplifiers based $3 I ¨ $ technique: a practical guide for thermal conductivity experiments in bulk samples

Role of native point defects and Hg impurities in the electronic properties of Bi $_{4}$ I $_{4}$

Structural investigation of the quasi-one-dimensional topological insulator Bi $_{4}$ I $_{4}$