Our laboratory employs various types of spectroscopic
techniques to study low dimensional electronic systems and nano-systems.
The main experimental tools used are Fourier transform infrared
spectroscopy and Raman spectroscopy. Efforts
are underway to couple these spectroscopic methods with strong magnetic fields,
time-resolved studies and the intense THz synchrotron radiation at Brookhaven
National Laboratory. Currently,
there are three major areas of research:
studies of superconductors and 2D-layered cobaltates: including high temperature
superconductors and the newly discovered superconductor MgB2.
Infrared spectroscopy is ideal for the study of charge dynamics and gap
properties in superconductors.
Coupled with strong magnetic fields and synchrotron radiation, we are
developing infrared spectroscopy into one of the major tools that would shine
the light on the paring mechanisms in various kinds of superconductors.
studies of nano-systems: these include ultra-thin films, nano-wires and nano-magnets
like the single molecule magnets (SMMs).
Optical spectroscopy, particularly in the THz region, provides a unique
“contactless” probe to study these low-dimensional nano-systems, when
traditional transport measurements are difficult or sometimes impossible to be
3. Infrared and optical properties of semiconductors with applications as solid
state x-ray and g-ray detectors: systems of
particular interests are CdZnTe (CZT) and CdMgTe (CMT)
Research positions for undergraduate and graduate students are available.
If interested, please contact Professor
Tu at firstname.lastname@example.org or
come to visit the optical spectroscopy lab in Marshak J-327.