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  Joe Poon   Joe Poon
William Barton Rogers Professor of Physics , Experimental Condensed Matter Physics
Ph.D., 1978, Caltech

sjp9x@Virginia.EDU email   924-6792 tel 303 JBL Office
  RESEARCH INTERESTS
     

My research group currently focuses on two projects. In project 1, we perform experimental and computational study of new semiconductors for heat to electrical energy conversion and cooling. The narrow-bandgap semiconductors studied by us are often in the proximity of Dirac metals and semimetals that tend to show unusual thermo-magnetic and electrical transport properties. In project 2, we perform experimental and computational study of ferrimagnetic and antiferromagnetic thin film heterostructures that show intriguing magnetic and transport properties, e.g., skyrmionic state and anomalous Hall effect. The unique magnetic spin structure and switching dynamics are ideal for low-power and ultrafast switching nanoelectronics. In our laboratory, we synthesize nano-bulk materials and thin films and perform measurement and nanoscale structural and compositional characterization. We perform computational studies using UVa High-Performance Computing Cluster.

  RESEARCH GROUP(S)
     

Metallic Glasses

  SELECTED PUBLICATIONS
     
Recent publications:
 
Google scholar: 
https://scholar.google.com/citations?user=cVHCVr8AAAAJ&hl=en
 
“Semi-metals as potential thermoelectric materials: case of HgTe”, Maxime Markov, Xixiao Hu, Han-Chun Liu, Naiming Liu, Joseph Poon, Keivan Esfarjani, and Mona Zebarjadia, Nature Scientific Reports 8, 9876 (2018). 
 
“Elastic mismatch induced reduction of the thermal conductivity of silicon with aluminum nano-inclusions”, Brian Donovan, Wade Jensen, Long Chen, Joseph Poon, Jerrold Floro, and Patrick Hopkins, Appl. Phys. Lett. 112, 213103 (2018).
 
 “High thermoelectric figure of merit by resonant dopant in Half-Heusler alloys”, Long Chen, Yamei Liu, Jian He, Terry M. Tritt, and S. Joseph Poon, AIP Advances 7, 065208 (2017).
 
“Ballistic transport of long wavelength phonons and thermal conductivity accumulation in nanograined silicon-germanium alloys”, Long Chen, Jeffrey L. Braun, Brian F. Donovan, Patrick E. Hopkins, and S. Joseph Poon, Appl. Phys. Lett. 111, 131902 (2017).
 
“Micromagnetic simulation of ferrimagnetic TbFeCo films with exchange coupled nanophases”, T. C. Chung, X. P. Li, and S. J. Poon, J. Magn. Magn. Mater. 417, 197 (2016).
 
 
 
  NEWS ITEMS
     
Brad Cox's work on the discovery of the Higgs boson and Joe Poon's work on amorphous "super steel" is celebrated in a UVAToday story on UVA's top twelve notable ......More >
From UVAToday: In a case of “smaller is better,” a team of University of Virginia researchers has received a $3.4 million grant from Defense Advanced ......More >
From UVaToday:"A panel of U.Va. faculty members and a Human Resources consultant experienced in faculty searches shared a range of recruiting strategies. Dr. Sim Galazka, professor of family ......More >
Researchers in the US, including U.Va., have unveiled a new high-temperature material that is 60% better at converting heat to electricity than comparable "thermoelectrics". The material, which is ......More >