Table of Contents: :: Library Catalog

Gardado en:

Detalles Bibliográficos
Main Authors:	Cochran, Tyler A, Belopolski, Ilya, Manna, Kaustuv, Yahyavi, Mohammad, Liu, Yiyuan, Sanchez, Daniel S., Cheng, Zi-Jia, Yang, Xian P., Multer, Daniel, Yin, Jia-Xin, Borrmann, Horst, Chikina, Alla, Krieger, Jonas A., Sánchez-Barriga, Jaime, Fèvre, Patrick Le, Bertran, François, Strocov, Vladimir N., Denlinger, Jonathan D., Chang, Tay-Rong, Jia, Shuang, Felser, Claudia, Lin, Hsin, Chang, Guoqing, Hasan, M. Zahid
Formato:	Preprint
Publicado:	2020
Subjects:	Materials Science Mesoscale and Nanoscale Physics
Acceso en liña:	https://arxiv.org/abs/2004.11365
Tags:	Engadir etiqueta Sen Etiquetas, Sexa o primeiro en etiquetar este rexistro!

Table of Contents:

Novel topological phases of matter are fruitful platforms for the discovery of unconventional electromagnetic phenomena. Higher-fold topology is one example, where the low-energy description goes beyond Standard Model analogs. Despite intensive experimental studies, conclusive evidence remains elusive for the \textit{multi-gap topological nature of higher-fold chiral fermions}. In this Letter, we leverage a combination of fine-tuned chemical engineering and photoemission spectroscopy with photon energy contrast to discover the higher-fold topology of a chiral crystal. We identify all bulk branches of a higher-fold chiral fermion for the first time, critically important for allowing us to explore unique Fermi arc surface states in multiple inter-band gaps, which exhibit an emergent ladder structure. Through designer chemical gating of the samples in combination with our measurements, we uncover an unprecedented multi-gap bulk boundary correspondence. Our demonstration of multi-gap electronic topology will propel future research on unconventional topological responses.

Títulos similares