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이번 학기 콜로퀴움은 코로나19 오미크론 변이 급속 확산 및 정부 지침에 따라 온-오프 하이브리드(오프라인+Real Time Streaming)으로 운영될 예정입니다.

열번째 강연에는 DGIST의 박기성 교수님을 모시고 콜로퀴움을 개최하오니, 학과 구성원 여러분의 많은 참여를 부탁 드립니다.

코로나19 확산방지를 위해 다과는 제공하지 않습니다.


                                       아            래


1. Title: Magnetoresistance and Hall effects of Fe5Sn3 single crystals 


2. Speaker: 박  기  성  교수님 (DGIST 화학물리학과)


3. Date & Time: May 18(Wed.) 2022.  4:30 PM

 
4. Place: Natural Science 1,  Room No. 31214


5. Abstract: Fe5Sn3 is considered as a new topological material candidate since it has three times larger hole conductivity than Fe3sn2, a well-known topological material. Fe5Sn3 has a P63/mmc atomic structure where 1/3 of Fe(II) vacancy is randomly distributed. We have synthesized Fe5Sn3 single crystals with various residual resistivity ratios (RRRs). The sample with a large RRR shows large magnetoresistance and a metal-to-insulator transition with a bandgap of 1.8 meV. I will share the related results and possible interpretations.

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