Grainger College of Engineering, All Events

View Full Calendar

Materials Science and Engineering - Special Seminar - "Designing quantum properties and functionalities in heterostructures"

Event Type
Materials Science and Engineering Department
Room 190 Engineering Science Building, 1101 W. Springfield Ave., Urbana
Mar 3, 2023   1:00 pm  
Kenji Yasuda, Department of Physics, Massachusetts Institute of Technology
Originating Calendar
MatSE Special Seminar Calendar

 "Designing quantum properties and functionalities in heterostructures"

Interfaces in heterostructures often exhibit emergent physical properties that are absent in the constituent layers. Recent advances in fabricating atomically-defined interfaces have enabled us to design unique quantum properties through symmetry and electronic structure engineering. These heterostructures, together with their compatibility with nanofabrication, are promising for constructing functional quantum devices. I will illustrate the capability of such heterostructure engineering by taking two examples. First, I will explain our discovery of a versatile method for synthesizing ferroelectric materials from non-ferroelectric two-dimensional (2D) materials: by physically stacking two monolayer boron nitrides at controlled angles, novel types of ferroelectricity emerge at the interface. I will demonstrate its functionality as one of the world’s thinnest ferroelectric non-volatile memories at room temperature. As another example, I will demonstrate the versatile spintronic functionalities of topological insulator heterostructures synthesized by a thin film growth method. Finally, I will conclude by discussing how we can overcome the limits of existing heterostructure engineering for the future design of quantum materials and functionalities.

link for robots only