2D materials/Devices

Atomically thin sheets of 2D crystals exhibit entirely different properties than their 3D counterparts. We are interested in devices based on 2D materials, with outstanding electronic and optical properties for practical applications. Besides, their atomically flat surface makes it possible to stack them together and form heterostructures. We explore devices, such as memory and mechanical resonators, based on 2D materials/heterostructure to solve challenges in information recording and sensing. Our 2D crystal toolbox includes Weyl semimetal, topological insulators, ferroelectric materials, 2D magnets et al.

Information technology and quantum material

Fast-growing data-driven society drives information technology development, aiming for better efficiency, faster operation speed, and safer transportation. Quantum materials with exotic orders exhibit great potential by providing ultra-stable and high-efficient information carriers. We are interested in (a) engineering and optimizing nano-devices based on interesting orders such as domain walls, filaments and defects for information recording. (b) exploring new information carriers, such as magnon and its hybrids for efficient information processing.

Experimental Techniques

To address challenges in creating, understanding, and utilizing emergent quantum phenomena at the device level, we employ and develop a series of experimental tools, covering from fabrication to characterization. (a) 2D materials fabrication: assembling 2D heterostructures in both ambient and inert-gas environment for optical, mechanical and transport measurements.  (b) Material properties and device performance are characterized by a multi-dimensional characterization platform, combining quantum transport (DC to RF range) with optical spectroscopies under extreme conditions, such as cryogenic temperature, high magnetic field and large strain.