275 citations · 803 across the 12 of their papers we have counts for
12 papers
On infrared pseudogap in cuprate and pnictide high-temperature superconductors
S. J. Moon, Y. S. Lee, A. A. Schafgans +15
We investigate infrared manifestations of the pseudogap in the prototypical cuprate and pnictide superconductors: YBa2Cu3Oy and BaFe2As2 (Ba122) systems. We find remarkable similar…
Infrared Measurement of the Pseudogap in P-Doped and Co-Doped BaFe2As2 High-Temperature Superconductors
S. J. Moon, A. A. Schafgans, S. Kasahara +10
We report on infrared studies of charge dynamics in a prototypical pnictide system: the BaFe2As2 family. Our experiments have identified hallmarks of the pseudogap state in the BaF…
Landau level spectroscopy of surface states in the topological insulator BiSb via magneto-optics
A. A. Schafgans, A. A. Taskin, Yoichi Ando +4
We have performed broad-band zero-field and magneto-infrared spectroscopy of the three dimensional topological insulator BiSb. The zero-field results allow us to…
Nanoscale imaging of the electronic and structural transitions in vanadium dioxide
M. M. Qazilbash, A. Tripathi, A. A. Schafgans +8
We investigate the electronic and structural changes at the nanoscale in vanadium dioxide (VO2) in the vicinity of its thermally driven phase transition. Both electronic and struct…
Phonon splitting and anomalous enhancement of infrared-active modes in BaFeAs
A. A. Schafgans, B. C. Pursley, A. D. LaForge +3
We present a comprehensive infrared spectroscopic study of lattice dynamics in the pnictide parent compound BaFeAs. In the tetragonal structural phase, we observe the two d…
Electronic correlations and unconventional spectral weight transfer in BaFeCoAs
A. A. Schafgans, S. J. Moon, B. C. Pursley +7
We report an infrared optical study of the pnictide high-temperature superconductor BaFeCoAs and its parent compound BaFeAs. We demonstrate that…