Argonne National Laboratory

Wai-Kwong Kwok

Senior Physicist & Group Leader

Education

Ph.D. in Condensed Matter Physics, Purdue University

B.A. in Physics and Mathematics, Kenyon College

Professional Experience

Aug 2007 - Present Senior Physicist, Materials Science Division

Oct  2001 - Present Group Leader, Superconductivity & Magnetism Group

May 1994 - Jul 2007 Physicist, Materials Science Division

Dec 1988 - Apr 1994 Assistant Physicist, Materials Science Division

Sep 1988 - Dec 1988 Term Assistant Physicist, Argonne National Laboratory

Dec 1987 - Sep 1988 Postdoctoral Research Fellow, Argonne National Laboratory

Selected Awards

Fellow of the American Physical Society, 1999

University of Chicago Outstanding Accomplishment Award, 1998

Department of Energy Award for Outstanding Accomplishment in Materials Science, 1997

Department of Energy Award for Outstanding Accomplishment in Materials Science, 1990

Selected Professional Activities

Co-Associate Director and co-Theme Leader for the EFRC on Center for Emergent Superconductivity (Aug. 2014 - present)

Theme Leader of Vortex/Critical Current for the EFRC on Center for Emergent Superconductivity (Aug. 2009-2014)

Contributor to Report on DoE-BES Basic Research Needs Report on Quantum Materials (Feb 2016)

Co-Chair on DoE-BES Workshop on Basic Research Needs for Superconductivity (May 2006)

Editor, Physica C, 2003- 2015

Research Interests

Materials science

Nanoscale superconductors and magnets

Vortex matter in superconductors

Highly correlated electrons in metals

Physics of granular matter

Research Supervision

12 Ph.d, diplome students and postdocs supervised since 1990

Supervised over 25 undergraduate science majors in the Science and Engineering Research Semester (SERS) program supported by the DOE-Division of Educational Programs since 1985.

Selected Recent Publications

of ~360 in print. Over 14300 career citations,  h-index = 60 (IS), 64 (Google); i10-index=204.

Rewritable artificial magnetic charge ice
Yong-Lei Wang, Zhi-Li Xiao, Alexey Snezhko, Jing Xu, Leonidas E. Ocola, Ralu Divan, John E. Pearson, George W. Crabtree and Wai-Kwong Kwok
Science 352, 962 (MAY 2016)

Toward superconducting critical current by design
Ivan A. Sadovskyy, Ying Jia, Maxime Leroux, Jihwan Kwon, Hefei Hu , Lei Fang, Carlos Chaparro, Shaofei Zhu, Ulrich Welp, Jian-Min Zuo, Yifei Zhang, Ryusuke Nakasaki, Venkat Selvamanickam, George W. Crabtree, Alexei E. Koshelev, Andreas Glatz, and Wai-Kwong Kwok
Advanced Materials 28, 4593–4600 (2016)

Rayleigh instability of confined vortex droplets in critical superconductors
I. Lukyanchuk, V. M. Vinokur, A. Rydh, R. Xie, M. V. Milošević, U. Welp, M. Zach, Z. L. Xiao, G. W. Crabtree, S. J. Bending, F. M. Peeters and W. K. Kwok 
Nature Physics 11(1), 21  (JAN 2015)

Temperature-dependent three-dimensional anisotropy of the magnetoresistance in WTe2
L. R. Thoutam, Y. L. Wang, Z. L. Xiao, S. Das, A. Luican-Mayer, R. Divan, G. W. Crabtree, and W. K. Kwok
Physical Review Letters 115, 046602  (July 24, 2015)

Triode for Magnetic Flux Quanta
V. K. Vlasko-Vlasov, F. Colauto, T. Benseman, D. Rosenmann, W. -K. Kwok
Scientific Reports 6, 36847 (NOV 2016)

Vortices in High-Performance High-Temperature Superconductors
W. -K. Kwok, U. Welp, A. Glatz, A. E. Koshelev, K. J. Kihlstrom, G. W. Crabtree
Report on Progress in Physics
79 116501 (Sept 21, 2016)- Review Article

Rapid doubling of the critical current of YBa2Cu3O7-d coated conductors for viable high speed industrial processing
M. Leroux, K. J. Kihlstrom, S. Holleis, M. W. Rupich, S.Sathyamurthy, S. Fleshler, H. P. Sheng, D. J. Miller, S. Eley, L. Civale, A. Kayani, P. M. Niraula, U. Welp, W. –K. Kwok,
Applied Physics Letters 107(19), 192601 (NOV 2015)

Enhancing superconducting critical current by randomness
Y. L. Wang, L. R. Thoutam,  Z. L. Xiao, B. Shen, J. E. Pearson, R. Divan, L. E. Ocola, G. W. Crabtree, W. –K. Kwok
Phys. Rev. B 93(4), 045111(JAN 2016)

Selected Recent Invited Talks

Vortex Studies on a Hybrid Superconducting/Magnetic Spin Ice System, W. K. Kwok, 29th International Superconductivity Symposium (ISS2016), December 13-15, 2016

Towards Critical Current by Design in HTS, W. –K. Kwok, The 4th CAS-DOE/BES Collaboration Workshop on Novel Superconductors, Shanghai China, May 6-8, 2016

“rradiation Enhanced Critical Current in High Performance High Temperature Superconductors, Wai –K. Kwok, 11th International Conference on Ceramic Materials Components for Energy and Environmental Applications (CMCEE-11), Vancouver, Canada, (June 14-19, 2015)

Enhancing Superconducting Critical Current by Randomness, Wai -K. Kwok, 15th International Workshop on Vortex Matter in Superconductors, El Escorial, Spain (May 10 – 15, 2015)

Irradiation Effects of Vortex Pinning in High Performance High Temperature Superconductors, Wai –K. Kwok, 27th International Symposium on Superconductivity (ISS2014), Funabori, Tokyo, Japan (Nov. 25-27, 2014)

Irradiation Induced Vortex Pinning in Iron-based Superconductors, W. K. Kwok,  Physics and Applications of Superconducting Hybrid Nano-Engineered Devices 2014, Aug. 31 – Sept. 4, 2014, Santa Maria Castellabate, Italy

Tailored Large Critical Currents in Iron-based Superconductors”, W. K. Kwok, American Physical Society March Meeting, March 2-7, 2014, Denver, Colorado.

Breaking the Glass Ceiling on Superconducting Critical Currents”, Wai Kwok,  2013 MRS Spring Meeting, April 1-5, 2013, San Francisco, CA