Last 22 July 2024 Martin Gutierrez-Amigo successfully defended his thesis entitled “Lattice effects and phase transitions in topological materials”
In his PhD thesis, Martin investigated lattice effects and phase transitions in topological materials, focusing on the interaction between topology, phonons, and phase transitions. He conducted a topological analysis of the buckled honeycomb lattice, predicting nine potential phases, though further modeling suggested these are rare in nature. He also explored the stability of Sn₄P₃ and its monolayers, identifying dynamical instabilities that could lead to a metal-insulator transition and possible topological phases. His final project focused on the topological superconductor CsV₃Sb₅, where he determined the CDW transition is driven by L phonon softening, forming a 2x2x2 supercell due to strong electron-phonon coupling.
Martin presented these impressive findings in a well-received defense, engaging in a lively discussion with his committee formed by Aritz Leonardo, Giorgia Fugallo and Juan José Palacios. He displayed remarkable insight and a deep understanding of the field throughout the presentation.
To celebrate, Martin’s family, colleagues, and committee members enjoyed a meal together at Kalaberri restaurant. He now continues his academic career as a postdoctoral researcher at Aalto University under the supervision of Päivi Törma.
You can read Martin’s thesis here.