Office: S2- G67; SN 2042
Phone: 607 777 4627
Pegor Aynajian joined 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.
"Ubiquitous Interplay between Charge Ordering and High-Temperature Superconductivity
Eduardo H. da Silva Neto, Pegor Aynajian, Alex Frano, Riccardo Comin, Enrico Schierle, Eugen Weschke, András Gyenis, Jinsheng Wen, John Schneeloch, Zhijun Xu, Shimpei Ono, Genda Gu, Mathieu Le Tacon, Ali Yazdani,
Science 343, 393 (2014)
"Visualizing nodal heavy fermion superconductivity in CeCoIn5"
Brian B. Zhou, Shashank Misra, Eduardo H. da Silva Neto, Pegor Aynajian, Ryan E. Baumbach, J. D. Thompson, Eric D. Bauer, and Ali Yazdani,
Nature Physics 9, 474 (2013)
"Visualizing heavy fermions emerging in a quantum critical Kondo lattice"
Pegor Aynajian, Eduardo da Silva Neto, András Gyenis, Ryan E. Baumbach, J. D. Thompson, Zachary Fisk, Eric D. Bauer, and Ali Yazdani,
Nature 486, 201 (2012)
"Fluctuating stripes at the onset of the pseudogap in the high-Tc superconductor Bi2Sr2CaCu2O8+x"
Colin V. Parker, Pegor Aynajian, Eduardo H. da Silva Neto, Aakash Pushp, Shimpei Ono, Jinsheng Wen, Zhijun Xu, Genda Gu, and Ali Yazdani,
Nature 468, 677 (2010)
"Visualizing the formation of the Kondo lattice and the hidden order in URu2Si2"
Pegor Aynajian, Eduardo da Silva Neto, Colin V. Parker, Yingkai Huang, Abhay Pasupathy, John Mydosh, and Ali Yazdani,
Proc. Nat'l. Acad. Sci USA 107, 10383 (2010)
"Energy gaps and Kohn anomalies in elemental superconductors"
Pegor Aynajian, T. Keller, L. Boeri, S. M. Shapiro, K. Habicht, B. Keimer,
Science 319, 1509 (2008)