Office: S2- G67
Phone: 607 777 4627
Pegor Aynajian is joining Binghamton University's Department of Physics as an Assistant Professor in the fall of 2013. He received his Ph.D. in physics in 2009 from the Max Planck Institute for Solid State Research in conjunction with the University of Stuttgart, Germany. His Ph.D. research was focused on the study of electron-phonon interaction in conventional and unconventional superconductors using neutron resonance spin-echo and triple-axis spectroscopy. In 2009, he joined the Physics Department of Princeton University as a MRSEC postdoctoral fellow to pursue research on unconventional superconductivity and strongly correlated electron systems using scanning tunneling microscopy and spectroscopy.
My research interests focus on the physics of strongly correlated electrons systems, where electronic properties hinge on the collective interplay between charge, spin, and orbital degrees of freedom. In many of these material systems, electronic correlations are tuned by chemical doping. In proximity to local dopants, various electronic phases and ordering phenomena compete at the nanoscale, resulting in a rich phase diagram with emerging quantum states of matter. Consequently, spatial electronic inhomogeneity becomes an intrinsic property of correlated electron systems, whose detailed understanding demands the use of local spectroscopic probes.
My experimental approach is to bring together the power of local and bulk probes to visualize electrons and their correlations. At Binghamton University, we are building a variable-temperature, ultra-high-vacuum, scanning tunneling microscope (STM), which is a prevailing technique to locally access the electronic density of states of a material, its band structure, and collective charge (and spin) orders at the nanoscale. Complementary to the STM, we use neutron and x-ray spectroscopy, at dedicated research facilities around the world, to gain insight of the bulk electronic properties and their excitations.
Research areas include:
Figure: (Left) STM topograph of a cleaved CeCoIn5 sample revealing single atomic steps to the different atomic layers within the unit cell. (Center) Design of the variable temperature STM at the Department of Physics at Binghamton University. (Right) Real- and momentum- space electronic structure of heavy fermions revealed by scanning tunneling spectroscopy, providing insight to the local electronic correlations and the band structure in CeCoIn5.
Last Updated: 3/18/14