activity
20192022
most citedLocal orbital degeneracy lifting as a precursor to an orbital-selective Peierls transition

63 citations · 221 across the 9 of their papers we have counts for

collaborators

9 papers

cond-mat.supr-con2022★ 8 cited

Role of Local Ru Hexamers in Superconductivity of Ruthenium Phosphide

Robert J. Koch, Niraj Aryal, Oleh Ivashko +7

Superconductivity in binary ruthenium pnictides occurs proximal to and upon suppression of a mysterious non-magnetic ground state, preceded by a pseudogap phase associated with Fer…

cond-mat.supr-con2022★ 29 cited

Strongly-overdoped LaSrCuO: Evidence for Josephson-coupled grains of strongly-correlated superconductor

Yangmu Li, A. Sapkota, P. M. Lozano +20

The interpretation of how superconductivity disappears in cuprates at large hole doping has been controversial. To address this issue, we present an experimental study of single-cr…

cond-mat.str-el2020★ 16 cited

Dual Orbital Degeneracy Lifting in a Strongly Correlated Electron System

R. J. Koch, R. Sinclair, M. T. McDonnell +8

The local structure of NaTiSiO is examined across its Ti-dimerization orbital-assisted Peierls transition at 210 K. An atomic pair distribution function approach eviden…

cond-mat.mtrl-sci2020★ 18 cited

Two-orbital degeneracy lifted state as a local precursor to a metal-insulator transition

Long Yang, Robert J. Koch, Hong Zheng +5

The recent discovery of a local fluctuating t2g orbital-degeneracy-lifted (ODL) state in CuIr2S4 as a high temperature precursor to the metal-insulator transition (MIT) opens the d…

cond-mat.str-el2020★ 18 cited

Three-dimensional Ising Ferrimagnetism of Cr-Fe-Cr trimers in FeCr2Te4

Yu Liu, R. J. Koch, Zhixiang Hu +7

We carried out a comprehensive study of magnetic critical behavior in single crystals of ternary chalcogenide FeCrTe that undergoes a ferrimagnetic transition below $…

cond-mat.supr-con2019★ 21 cited

Photoinduced ultrafast dynamics of local nematicity and lattice distortions in FeSe crystals

T. Konstantinova, L. Wu, M. Abeykoon +12

Formation of electronic nematicity is a common thread of unconventional superconductors. In iron-based materials, the long-range nematic order is revealed by the orthorhombic latti…