4 papers
Real-space formulation of the Chern invariant and topological phases in a disordered Chern insulator
Kiminori Hattori, Shinji Nakata
In this paper, we formulate the real-space Chern number in a supercell framework. In this framework, the overlap matrix between two corners of the Brillouin zone (BZ) is derived fr…
Enhanced coherent terahertz emission from critical superconducting fluctuations in YBaCuO
D. Nicoletti, M. Rosenberg, M. Buzzi +10
Coherent terahertz (THz) emission is emerging as a powerful new tool to probe symmetry breakings in quantum materials. This method relies on second order optical nonlinearities and…
Coincident onset of charge order and pseudogap in a homogeneous high-temperature superconductor
D. Betto, S. Nakata, F. Pisani +10
Understanding high-temperature superconductivity in cuprates requires knowledge of the metallic phase it evolves from, particularly the pseudogap profoundly affecting the electroni…
Resonant x-ray scattering study of charge-density wave correlations in YBaCuO under uniaxial stress
S. Nakata, D. Betto, E. Schierle +13
We report a comprehensive study of the uniaxial stress response of charge-density-wave (CDW) correlations in detwinned single crystals of the high temperature superconductor YBa$_2…