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16 papers · 2 filters
Large Kohn anomaly and phonon collapse induced by charge density wave in UPtSi
Jooseop Lee, Greta L. Chappell, Ryan E. Baumbach +2
Using high-energy-resolution inelastic x-ray scattering, we observe anomalous softening and damping of the transverse acoustic phonon in UPtSi as the system is cooled towar…
Magnetic field control over the axialness of Higgs modes in charge-density wave compounds
Dirk Wulferding, Jongho Park, Takami Tohyama +2
Understanding how symmetry-breaking processes generate order out of disorder is among the most fundamental problems of nature. The scalar Higgs mode - a massive (quasi-) particle -…
Instability of metals with respect to strong electron-phonon interaction
Emil A. Yuzbashyan, Boris L. Altshuler, Aniket Patra
We show that thermal equilibrium between conduction electrons and phonons becomes kinetically unstable when the renormalized electron-phonon coupling exceeds a certain threshold. W…
Emergence of Meron Kekulé lattices in twisted Néel antiferromagnets
Kyoung-Min Kim, Se Kwon Kim
A Kekulé lattice is an exotic, distorted lattice structure exhibiting alternating bond lengths, distinguished from naturally formed atomic crystals. Despite its evident applicabili…
Successive electron-vortex binding in quantum Hall bilayers at
Glenn Wagner, Dung X. Nguyen
Electrons in a quantum Hall fluid can bind with an integer number of vortices to form composite fermions and composite bosons. We show that the quantum Hall bilayer at filling $ν=\…
Gapless dynamic magnetic ground state in the charge-gapped trimer iridate BaNbIrO
Abhisek Bandyopadhyay, S. Lee, D. T. Adroja +18
We present an experimental investigation of the magnetic ground state in BaNbIrO, a fractional valent trimer iridate. X-ray absorption and photoemission spectroscopy…