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49 papers
Probing the quantum metric of 3D topological insulators
Giacomo Sala, Emanuele Longo, Maria Teresa Mercaldo +5
The surface states of 3D topological insulators possess geometric structures that imprint distinctive signatures on electronic transport. A prime example is the Berry curvature, wh…
Electric field control of superconducting fluctuations and quasiparticle interference at oxide interfaces
Graham Kimbell, Ulderico Filippozzi, Stefano Gariglio +4
We investigate tunable superconducting transitions in (111) field-effect devices. Large increases in conductivity, associated with superconducting…
Curvature-Controlled Polarization in Adaptive Ferroelectric Membranes
Greta Segantini, Ludovica Tovaglieri, Chang Jae Roh +12
In this study, we explore the ferroelectric domain structure and mechanical properties of PbTiO-based membranes, which develops a well-ordered and crystallographic-oriented rip…
Disentangling pre-transitional fluctuations in metallic VO2
Javier del Valle, Carl Willem Rischau, Artem Korshunov +8
VO2 features concomitant structural and metal-insulator transitions. This poses a challenge for understanding the underlying mechanism: is the transition triggered by a structural…
High-field superconductivity from atomic-scale confinement and spin-orbit coupling at (111) interfaces
Ulderico Filippozzi, Graham Kimbell, Davide Pizzirani +6
We study the superconducting critical fields of two-dimensional electron systems at (111) interfaces as a function of electrostatic back-gating. Our work r…
The quantum metric of electrons with spin-momentum locking
Giacomo Sala, Maria Teresa Mercaldo, Klevis Domi +4
Quantum materials are characterized by electromagnetic responses intrinsically linked to the geometry and topology of electronic wavefunctions, encoded in the quantum metric and Be…