거대자기저항효과, 거대 자기전기성 및 거대 자기유전성 효과, 중시계에서 나타나는 복잡한 물질의 자기조직화

1989~1991 AT&T 벨 연구소 Postdoctoral Member
1991~1996 AT&T 벨 연구소 Member of Technical Staff
1997∼2001 벨연구소 Member of Technical Staff
1997∼2001 Rutgers Univ. 물리학과 영년직 교수
2000 American Physical Society Fellow
2002∼ Rutgers Univ. 물리학과 특훈교수
2004~ Foreign Research Fellow, Graduate School of Frontier Sciences, U. of Tokyo, Japan
2005∼ Director, Rutgers Center for Emergent Materials
2007∼ Director, Laboratory of Pohang Emergent Materials, Postech, S. Korea
2006∼2008 Donald H. Jacobs Chair in Applied Physics, Rutgers
2011∼ Board of Governors Professor, Rutgers
2014∼ Distinguished visiting professor, Nanjing University, China

2007 Hoam Prize in Science, Samsung.
2009 KBS Korean Global Award (해외동포상)
2010 James C. McGroddy Prize for New Materials, American Physical Society