Local suppression of the hidden order phase by impurities in URu2Si2
Maria E. Pezzoli, Matthias J. Graf, Kristjan Haule, Gabriel Kotliar, and Alexander V. Balatsky
TL;DR
This paper investigates how Rh impurities locally suppress the hidden order in URu2Si2, leading to emergent antiferromagnetic regions, and compares the model with experimental NMR data.
Contribution
It introduces a lattice free energy model capturing local impurity effects on hidden order and antiferromagnetic competition in URu2Si2.
Findings
Local HO suppression near Rh impurities creates AFM droplets.
Model predictions agree with recent NMR experimental results.
Impurities induce a 'Swiss cheese' pattern of HO suppression and AFM emergence.
Abstract
We consider the effects of impurities on the enigmatic hidden order (HO) state of the heavy-fermion material URu2Si2. In particular, we focus on local effects of Rh impurities as a tool to probe the suppression of the HO state. To study local properties we introduce a lattice free energy, where the time invariant HO order parameter "psi" and local antiferromagnetic (AFM) order parameter M are competing orders. Near each Rh atom the HO order parameter is suppressed, creating a hole in which local AFM order emerges as a result of competition. These local holes are created in the fabric of the HO state like in a Swiss cheese and "filled" with droplets of AFM order. We compare our analysis with recent NMR results on URu2Si2 doped with Rh and find good agreement with the data.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.