53 citations · 173 across the 11 of their papers we have counts for
4 papers · 1 filter
An Electronic Nematic Liquid in BaNiAs
Yi Yao, Roland Willa, Tom Lacmann +10
Understanding the organizing principles of interacting electrons and the emergence of novel electronic phases is a central endeavor of condensed matter physics. Electronic nematici…
Symmetry-mixed bound-state order: extended degeneracy of -superconductivity in
Roland Willa
We report a fluctuation-driven state of matter that develops near an accidental degeneracy point of two symmetry-distinct primary phases. Due to symmetry mixing, this bound-state o…
Phase transition preceding magnetic long-range order in the double perovskite Ba2NaOsO6
Kristin Willa, Roland Willa, Ulrich Welp +4
Recent theoretical studies [Chen et al., Phys. Rev. B 82, 174440 (2010), Ishizuka et al., Phys. Rev. B 90, 184422 (2014)] for the magnetic Mott insulator Ba2NaOsO6 have proposed a…
Strain tuning and anisotropic spin correlations in iron-based systems
Roland Willa, Max Fritz, Jörg Schmalian
Nematic order in the iron-based superconductors is closely tied to a lattice distortion and a structural transition from tetragonal to orthorhombic symmetry. External stress of the…