PHYSICS/BK21 SEMINAR (08/07/08)

"Investigation of electronic and magnetic properties at the interface of the oxide multilayers


연사: Dr. Heon-Jung Kim[Max Planck Institute for Solid State Research Heisenbergstra]

일시: 2008 년 7 월 8 일  10:00 ~ 11:00 am

장소: 물리학과 세미나실(공학3동 201호)

ABSTRACT:

Physics at low dimension is very interesting because spatial dimension strongly modifies the interaction strength between constituting particles. Interface of electronically different transition metal oxides (TMO) is a two-dimensional system where charge, spin, and orbital play important roles as in the bulk TMO. The heterogeneous two-dimensional environment makes this system particularly unique and therefore, this system is attractive for observing new quantum states of matter. Recent advances in thin film technology have made it possible to construct such heterostructures or superlattices with atomic precision and open the door to exploring structural, electronic, and magnetic properties of interfaces in detail. In this talk, I will present our investigation on electronic and magnetic properties at the interface of YBa2Cu3O7/La1-xCaxMnO3 heterostructures and of LaNiO3/LaAlO3 multilayers. I will show experimental evidences about charge, spin, or orbital reconstructions in these systems. Special emphasis will be put on the synthesis of new functional oxide heterostructures by pulsed laser deposition and the characterization of these systems by spectroscopic techniques.

문의처: 이기봉(054-279-2068, kibong@postech.ac.kr)
"