Hour: From 14:30h to 16:00h
Place: ICFO Auditorium
SERGIO VALENZUELA
"PROXIMITY PHENOMENA IN VAN DER WAALS MATERIALS"
By Sergio Valenzuela (ICN2)
BIOGRAPHY:
Sergio O. Valenzuela is an ICREA Prof. at the Catalan Institute of Nanoscience and Nanotechnology (ICN2). He leads the Physics and Engineering of Nanodevices group, which focuses on quantum transport, spintronics, and thermoelectricity in materials such as graphene and topological insulators. He has pioneered the use of nonlocal devices to study the spin Hall effect, thermopiles to isolate the magnon drag in ferromagnetic materials, and implemented novel qubit control and spectroscopy methods. Prof. Valenzuela received a PhD in Physics at the University of Buenos Aires and held research positions at Harvard University and MIT. He is recipient of the Giambiagi prize, the IUPAP Young Scientist Prize, a ERC Consolidator Grant and is Member of the Academia Europaea. He is also Principal Investigator of the Graphene Flagship, Grantor of the ICN2 “Severo Ochoa” Centre of Excellence Project and Coordinator of the FET-PROACTIVE Project "TOCHA".
ABSTRACT:
The large variety of 2D materials and their co-integration in van der Waals heterostructures enable innovative device engineering. In particular, their atomically thin nature promotes the creation of artificial quantum materials by proximity effects that originate from short-range interactions [1]. In this talk, I will highlight recent advances in this rapidly evolving field, which has initiated a new paradigm for material design. I will show that this designer approach is especially compelling for spintronic devices, which usually harness their functionalities from thin layers of magnetic and non-magnetic materials and the interfaces between them [2]. I will further introduce novel ways to investigate proximity phenomena by means of spin transport dynamics, as reflected in spin relaxation anisotropy [3] and charge to spin interconversion [4,5].
[1] J. F. Sierra et al., Nature Nano. 16, 856–868 (2021)
[2] H. Yang, S O. Valenzuela et al., Nature 606, 663 (2022)
[3] L. A. Benítez et al., Nature Phys. 14 (2018); APL Materials 7, 120701 (2019)
[4] L. A. Benítez et al., Nature Mater. 19, 170 (2020)
[5] L. Camosi et al., 2D Mater. 9, 035014 (2022)
Hour: From 14:30h to 16:00h
Place: ICFO Auditorium
SERGIO VALENZUELA
"PROXIMITY PHENOMENA IN VAN DER WAALS MATERIALS"
By Sergio Valenzuela (ICN2)
BIOGRAPHY:
Sergio O. Valenzuela is an ICREA Prof. at the Catalan Institute of Nanoscience and Nanotechnology (ICN2). He leads the Physics and Engineering of Nanodevices group, which focuses on quantum transport, spintronics, and thermoelectricity in materials such as graphene and topological insulators. He has pioneered the use of nonlocal devices to study the spin Hall effect, thermopiles to isolate the magnon drag in ferromagnetic materials, and implemented novel qubit control and spectroscopy methods. Prof. Valenzuela received a PhD in Physics at the University of Buenos Aires and held research positions at Harvard University and MIT. He is recipient of the Giambiagi prize, the IUPAP Young Scientist Prize, a ERC Consolidator Grant and is Member of the Academia Europaea. He is also Principal Investigator of the Graphene Flagship, Grantor of the ICN2 “Severo Ochoa” Centre of Excellence Project and Coordinator of the FET-PROACTIVE Project "TOCHA".
ABSTRACT:
The large variety of 2D materials and their co-integration in van der Waals heterostructures enable innovative device engineering. In particular, their atomically thin nature promotes the creation of artificial quantum materials by proximity effects that originate from short-range interactions [1]. In this talk, I will highlight recent advances in this rapidly evolving field, which has initiated a new paradigm for material design. I will show that this designer approach is especially compelling for spintronic devices, which usually harness their functionalities from thin layers of magnetic and non-magnetic materials and the interfaces between them [2]. I will further introduce novel ways to investigate proximity phenomena by means of spin transport dynamics, as reflected in spin relaxation anisotropy [3] and charge to spin interconversion [4,5].
[1] J. F. Sierra et al., Nature Nano. 16, 856–868 (2021)
[2] H. Yang, S O. Valenzuela et al., Nature 606, 663 (2022)
[3] L. A. Benítez et al., Nature Phys. 14 (2018); APL Materials 7, 120701 (2019)
[4] L. A. Benítez et al., Nature Mater. 19, 170 (2020)
[5] L. Camosi et al., 2D Mater. 9, 035014 (2022)