BROSYNANO: EXPERIMENTAL STUDY OF TUNABLE SPIN AND VALLEY DEGENERACY IN BROKEN-SYMMETRY NANOSYSTEMS (PID2019-106820RB-C22)

We will focus on graphene and heterostructures of 2D materials as well as topological insulators and chiral molecular systems, where charge, spin transport and spin-light interactions are prominent and controllable. Essential ingredients of the underlying physics are broken-symmetry, chirality and topology. Nevertheless, the theoretical underpinning of topological and chiral spintronic materials is still being developed and understood. The project includes both experimental and theoretical aspects, closely linked as we will describe in this proposal.  Besides their undoubted fundamental interest, our scientific advances can pave the way for future breakthroughs in quantum technologies.

Furthermore, both nanodevice fabrication for transport studies and measurement of optoelectronic properties of nanostructures are needed to elucidate the underlying science of topological and chiral spintronics. All of these factors together make the field a particularly challenging one, requiring a grasp of diverse expertise. We believe that the best scientific work is based on research at the cutting edge and all of the interlinked projects tackle problems at the forefront of topological and chiral spintronics research, both theoretical and experimental. The structure of the present proposal is built around extensive cross-linking, which will allow us to develop a broad view alongside their specialty work.



Abstract:
We will focus on graphene and heterostructures of 2D materials as well as topological insulators and chiral molecular systems, where charge, spin transport and spin-light interactions are prominent and controllable. Essential ingredients of the underlying physics are broken-symmetry, chirality and topology. Nevertheless, the theoretical underpinning of topological and chiral spintronic materials is still being developed and understood. The project includes both experimental and theoretical aspects, closely linked as we will describe in this proposal.  Besides their undoubted fundamental interest, our scientific advances can pave the way for future breakthroughs in quantum technologies.Furthermore, both nanodevice fabrication for transport studies and measurement of optoelectronic properties of nanostructures are needed to elucidate the underlying science of topological and chiral spintronics. All of these factors together make the field a particularly challenging one, requiring a grasp of diverse expertise. We believe that the best scientific work is based on research at the cutting edge and all of the interlinked projects tackle problems at the forefront of topological and chiral spintronics research, both theoretical and experimental. The structure of the present proposal is built around extensive cross-linking, which will allow us to develop a broad view alongside their specialty work.

Funding_entity: MINISTERIO DE CIENCIA, INNOVACIÓN Y UNIVERSIDADES

Period: 2020-2022

Principal investigator and Coordinator: MARIO AMADO MONTERO Y ENRIQUE DIEZ FERNÁNDEZ

Participants: Mario Amado Montero, Enrique Diez Fernández, Pilar García Estévez, Jorge Quereda Bernabeu, Ana Perez Muñoz, Vito Clericó, Daniel Vaquero Monte, Juan Domingo Lejarreta Gonzalez, Cristina Hernández Fuentevilla, Sanaz Mehdipour, Paz Albares Vicente

Publications:

Raman response of topologically protected surface states in sub-micrometric Pb0.77Sn0.23Se flakes
S. Mehdipour, D. López-Díaz, M. M. Velázquez, P. Hidalgo, B. Méndez, M. Luna, V. Bellani, M. Amado, G. Balakrishnan & E. Diez
Journal of Raman Spectrosopy. 2020;1–7. https://doi.org/10.1002/jrs. 5998 (2020)

Excitons, trions and Rydberg states in monolayer MoS2 revealed by low-temperature photocurrent spectroscopy
Daniel Vaquero, Vito Clericò, Juan Salvador-Sánchez, Adrián Martín-Ramos, Elena Díaz, Francisco Domínguez-Adame, Yahya M. Meziani, Enrique Diez y Jorge Quereda
Communications Physics volume 3, 194 (2020) (2020)

Asymmetric dual-grating gates graphene FET for detection of terahertz radiations
J. A. Delgado-Notario, V. Clericò, E. Diez, J. E. Velázquez-Pérez, T. Taniguchi, K. Watanabe, T. Otsuji, and Y. M. Meziani
APL Photonics 5, 066102 (2020) (2020)