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12/5 물리학과 특별세미나 안내

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2016.12.02 / 957

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물리학과 특별세미나 개최 안내

 

물리학과에서는 응집물리실험-광학분야 특별세미나를 아래와 같이 개최하오니 관심있는 분들의 많은 참석을 바랍니다.

 

1. 연사: 이길호 박사 (Department of Physics, Harvard University)

2. 일시: 2016. 12. 5(월), 오후 2시 30분

3. 장소: 공학3동 201호 (세미나실)

4. 제목: Topological Superconductivity in Quantum Hall-Superconductor

Hybrid Structure

 

 

Understanding interplay between the superconductor (SC) and the quantum Hall (QH) phase has been a long-sought theoretical and experimental problem in condensed matter physics. Particularly, QH-SC hybrid structure has been suggested as a new kind of platform to study emergent excitations of non-Abelian anyons. We achieved to induce superconducting correlations into QH edge states by adopting the in-situ etching technique for highly transparent NbN superconducting contacts to the graphene channel encapsulated by h-BN. The high critical field of NbN electrodes (Hc2~25T) and the high quality of the graphene allow us to experimentally access a wide range of magnetic field and temperature where superconductivity and (fractional) QH effect coexist. I will discuss the experimental observation and various properties of such QH-SC hybrid system, in terms of a unique platform for realizing universal and scalable to pological quantum computers.

 

 

2016. 12. 3

물리학과 주임교수

 

 

 

Announcement on Physics Special Seminar

The Department of Physics will hold a Special Seminar as follows. The Special Seminar is open to all POSTECH members. Your participation will be greatly appreciated.1. Speaker: Dr. Gil-Ho Lee (Department of Physics, Harvard University)

2. Date(Time): Monday, December 5, 2016 (2:30 p.m.)3. Place: Science Bldg. III, Room 2014. Title: Topological Superconductivity in Quantum Hall-Superconductor

Hybrid Structure

 

 

Understanding interplay between the superconductor (SC) and the quantum Hall (QH) phase has been a long-sought theoretical and experimental problem in condensed matter physics. Particularly, QH-SC hybrid structure has been suggested as a new kind of platform to study emergent excitations of non-Abelian anyons. We achieved to induce superconducting correlations into QH edge states by adopting the in-situ etching technique for highly transparent NbN superconducting contacts to the graphene channel encapsulated by h-BN. The high critical field of NbN electrodes (Hc2~25T) and the high quality of the graphene allow us to experimentally access a wide range of magnetic field and temperature where superconductivity and (fractional) QH effect coexist. I will discuss the experimental observation and various properties of such QH-SC hybrid system, in terms of a unique platform for realizing universal and scalable to pological quantum computers.

 

 

December 3, 2016Head, Dept. of Physics

 

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