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IOP North America Alumni Association Visits MIT

Date:14-03-2019 Print

IOP North America Alumni Association (IOP NAAA) organized a visit to Massachusetts Institute of Technology (MIT) on the afternoon of March 6, 2019 (local time). Near 40 IOP alumni and friends from home and abroad participated in this activity.

On that day, a cold spell just struck Boston after heavy snow. But the enthusiasm of the visiting group was not dampened at all. Guided by campus volunteers, they walked through the most representative academic buildings and student centers of this world-renowned university, got to know the advantages and features of its academic atmosphere and scientific research, and experienced the rich extracurricular life of students.

The highlight of this visit was having conversations with local scientists. The group, led by Lyu Baiqing, alumnus of IOP and postdoctoral researcher of MIT, first visited materials research labs of Prof. Joseph Checkelsky and Prof. Nuh Gedik.

The Checkelsky lab, founded in 2014, focuses on the study of exotic electronic states of matters through synthesis, measurement and control of solid state materials. The lab has observed extremely large anomalous Hall resistance in Half-Heusler anti-ferromagnet GdPtBi, indicating that Berry phase can be decided by spin-orbital coupling and spin distribution in symmetry breaking materials. Meanwhile, the lab has discovered qualitative Dirac fermions in ferromagnetic Kagome metal Fe3Sn2, thus confirming topological electronic behaviors in correlated electron systems, and providing a way for realizing fractional topological quantum states. Of particular interests are studies of correlated behaviors in topologically non-trivial materials; the role of geometrical phases in electronic systems; and novel types of geometric frustration. These studies aim to uncover new physical phenomena that expand the boundaries of understanding of quantum mechanical condensed matter systems, and to open doorways to new technologies by realizing emergent electronic and magnetic functionalities.

The Gedik lab, established in 2008, focuses on the study of quantum materials through advanced optical and electronic spectrum techniques. The research team has developed a novel time-resolving technique that selectively detects electric charge, spin and excited-state lattice dynamics with an unprecedented amount of time, momentum and energy resolution. Meanwhile, this team employs powerful means for materials analyses, including time-resolved ARPES, ultrafast electron diffraction, pump-probe spectroscopy, transient grating spectroscopy, second harmonic generation and time-resolved terahertz spectroscopy.

Next, the group paid a visit to the Jing Kong lab that studies nanomaterials and electronics. This lab, set up in 2004, focuses on the growth of graphene, MoS2, h-BN and other new two-dimensional materials with excellent physicochemical properties mainly by chemical vapor deposition. After the obtainment of these 2D materials, various electronic and optoelectronic devices are fabricated by micro/nano processing techniques. New devices for high-performance electronics and energy conversion are developed thanks to an in-depth understanding of the growth and processing of 2D materials.

Researchers at these labs gave a warm reception to the group, comprehensively demonstrated the research condition of their labs and highlights of their work, answered questions and exchanged ideas on professional issues. The visiting group used their smartphones to take pictures or shoot videos so as to record valuable information. Many alumni remark that this visit is highly fruitful and they are looking forward to more such activities in the future.

President Gao Li planned and organized this activity, Deputy Secretary General Ou Yunbo coordinated and contacted the alumni, and Lyu Baiqing accompanied the reception.

Visiting Joseph Checkelsky’s lab

Visiting Nuh Gedik’s lab

Visiting Jing Kong’s lab

Visiting MIT campus 

Group photo