Charge density wave with anomalous temperature dependence in UPt2Si2

Abstract

Using single crystal neutron and x-ray diffraction, we discovered a charge density wave (CDW) below 320 K, which accounts for the long-sought origin of the heat capacity and resistivity anomalies in UPt2Si2. The modulation wavevector, Qmod, is intriguingly similar to the Fermi surface nesting wavevector of URu2Si2. Qmod shows an unusual temperature dependence, shifting from commensurate to incommensurate position upon cooling and becoming locked at ~ (0.42 0 0) near 180 K. Bulk measurements indicate a cross-over toward a correlated coherent state around the same temperature, suggesting an interplay between the CDW and Kondo-lattice-like coherence before coexisting antiferromagnetic order sets in at TN = 35 K.

arXiv comment6 pages, 4 figures

References in corpus (13)

• Colloquium: Hidden Order, Superconductivity, and Magnetism -- The Unsolved Case of URu2Si2
• Effect of Pressure on Tiny Antiferromagnetic Moment in the Heavy-Electron Compound URu_2Si_2
• Gapped itinerant spin excitations account for missing entropy in the hidden order state of URu${}_2$Si${}_2$
• Signatures of the Kondo effect in VSe2
• Formation of Incommensurate Charge Density Waves in Cuprates
• Spin-entropy driven melting of the charge order in La1.5Sr0.5CoO4
• Field-induced spin-density wave beyond hidden order in URu2Si2
• The coexistence of charge density wave and superconductivity in Pt-based layered superconductors : SrPt${}_2$As${}_2$ and LaPt${}_2$Si${}_2$
• Metallic ground state and glassy transport in single crystalline URh${}_2$Ge${}_2$: Enhancement of disorder effects in a strongly correlated electron system
• The dual nature of magnetism in a uranium heavy fermion system
• Field induced Lifshitz transition in UPt${}_2$Si${}_2$: Fermi surface under extreme conditions
• Field induced phases in UPt2Si2
• Magneto-thermal evidence of a partial gap at the Fermi surface of UPt_2Si_2

Cited by in corpus (7)

• Torsional Periodic Lattice Distortions and Diffraction of Twisted 2D Materials
• Direct Observation of an Incommensurate Charge Density Wave in the BiS2-based Superconductor NdO1-xFxBiS2
• Large moiré superstructure of stacked incommensurate charge density waves
• Tuning the structural and antiferromagnetic phase transitions in UCr${}_2$Si${}_2$: hydrostatic pressure and chemical substitution
• One-dimensional moire charge density wave in the hidden order state of URu2Si2 induced by fracture
• Polarized Neutron Diffraction Study on UPt${}_2$Si${}_2$
• Large Kohn anomaly and phonon collapse induced by charge density wave in UPt${}_2$Si${}_2$