Physics Colloquium - Extraordinary Physics in Semiconductor-Metal Hybrid Structures

Event Date: 

Tuesday, May 10, 2016 - 4:00pm

Event Location: 

  • Broida 1640

Speaker:

Stuart Solin

Charles M. Hohenberg Professor, Washington University in St. Louis

 

Abstract:

"EXX" phenomena in macroscopic, microscopic and nanoscopic metal-semiconductor hybrid structures will be described. Here E = extraordinary and XX = magnetoresistance (EMR), piezoconductance (EPC), optoconductance (EOC), and electroconductance (EEC). The underlying physics of EXX phenomena will be elucidated with particular emphasis on both analytic and finite element analysis methods to quantitatively account for the observed EXX enhancement. Surprising new aspects of the mesoscopic physics of the nano-hybrid structures will be addressed including the recently discovered inverse-EOC or I-EOC effect. So too will new 3-dimensional EMR phenomena. Time permitting, it will also be shown how multifunctional EXX and related nanosensors can be employed for several applications ranging from ultra-high density magnetic recording to the study of the properties of cancer cells with ultra-high spatial resolution.