55 citations · 232 across the 10 of their papers we have counts for
10 papers
Evolution of the cyclotron mass with doping in LaSrCuO
A. Legros, K. W. Post, Prashant Chauhan +7
The recent observation of cyclotron resonance in optimally-doped LaSrCuO using time-domain THz spectroscopy in high magnetic field has given new possibilities for t…
Observation of cyclotron resonance and measurement of the hole mass in optimally-doped LaSrCuO
K. W. Post, A. Legros, D. G. Rickel +8
Using time-domain terahertz spectroscopy in pulsed magnetic fields up to 31 T, we measure the terahertz optical conductivity in an optimally-doped thin film of the high temperature…
Faraday rotation due to surface states in the topological insulator (BiSb)Te
Yinming Shao, Kirk W. Post, Jhih-Sheng Wu +9
Using magneto-infrared spectroscopy, we have explored the charge dynamics of (Bi,Sb)Te thin films on InP substrates. From the magneto-transmission data we extracted three d…
Weak-coupling superconductivity in a strongly correlated iron pnictide
A. Charnukha, K. W. Post, S. Thirupathaiah +9
Iron-based superconductors have been found to exhibit an intimate interplay of orbital, spin, and lattice degrees of freedom, dramatically affecting their low-energy electronic pro…
From Hunds insulator to Fermi liquid: Optical spectroscopy study of K doping in BaMnAs
D. E. McNally, S. Zellman, Z. P. Yin +7
We present optical transmission measurements that reveal a charge gap of 0.86 eV in the local moment antiferromagnetic insulator BaMnAs, an order of magnitude larger than p…
Infrared electrodynamics and ferromagnetism in the topological semiconductors BiTe and Mn-doped BiTe
B. C. Chapler, K. W. Post, A. R. Richardella +4
We report on infrared (IR) optical experiments on BiTe and Mn-doped BiTe epitaxial thin films. In the latter film, dilute Mn doping (4.5\%) of the topologically non…
Antiferromagnetic Exchange, Hund's Coupling and the Origin of the Charge Gap in LaMnPO
D. E. McNally, J. W. Simonson, K. W. Post +12
We present inelastic neutron scattering and magnetization measurements of the antiferromagnetic insulator LaMnPO that are well described by a Heisenberg spin model. These measureme…
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…
From antiferromagnetic insulator to correlated metal in pressurized and doped LaMnPO
J. W. Simonson, Z. P. Yin, M. Pezzoli +17
Widespread adoption of superconducting technologies requires the discovery of new materials with enhanced properties, especially higher superconducting transition temperatures T$_{…
Gap states in insulating LaMnPOF (x = 0 - 0.3)
J. W. Simonson, K. Post, C. Marques +4
Infrared transmission and electrical resistivity measurements reveal that single crystals of LaMnPOF (x 0.28) are insulating. The optical gap obtained from tra…