Triplet Resonating Valence Bond State and Superconductivity in Hund’s Metals
Piers Coleman, Yashar Komijani, Elio J. König
DOI 10.1103/PhysRevLett.125.077001 · Physical Review Letters
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
A central idea in strongly correlated systems is that doping a Mott insulator leads to a superconductor by transforming the resonating valence bonds (RVBs) into spin-singlet Cooper pairs. Here, we argue that a spin-triplet RVB (tRVB) state, driven by spatially, or orbitally anisotropic ferromagnetic interactions can provide the parent state for triplet superconductivity. We apply this idea to the iron-based superconductors, arguing that strong on site Hund’s interactions develop intra-atomic tRVBs between the t2g orbitals. On doping, the presence of two iron atoms per unit cell allows these interorbital triplets to coherently delocalize onto the Fermi surface, forming a fully gapped triplet superconductor. This mechanism gives rise to a unique staggered structure of on site pair correlations, detectable as an alternating π phase shift in a scanning Josephson tunneling microscope.
Similar papers
The Triplet Resonating Valence Bond State and Superconductivity in Hund's Metals
similarity 0.92Piers Coleman et al. · 2019 · arXiv:1910.03168
Source status unknown — claims are unverified
Orbital coupling and superconductivity in the iron pnictides
similarity 0.89Junhua Zhang et al.
Source status unknown — claims are unverified
Pure odd-frequency superconductivity at the cores of proximity vortices
similarity 0.89Mohammad Alidoust et al.
Source status unknown — claims are unverified
Even-parity spin-triplet superconductivity in disordered electronic systems
similarity 0.89D. Belitz & T. R. Kirkpatrick
Source status unknown — claims are unverified
Magnetic field dependence of the proximity-induced triplet superconductivity at ferromagnet/superconductor interfaces
similarity 0.88Yoav Kalcheim et al.
Source status unknown — claims are unverified
Principles of the Field Theory of High Temperature Superconductivity in Underdoped Copper-Oxides
similarity 0.88Moshe Dayan · 2012 · arXiv:1201.6494
Source status unknown — claims are unverified