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cond-mat.str-el2026

Room-temperature multistage metastability in a moiré superstructure

B. Q. Lv, Yifan Su, Alfred Zong +16

Metastability is fundamental not only to phase ordering and transitions, but also to a broad range of modern technologies, from memory devices to metallic glasses. In condensed-mat…

cond-mat.str-el2026

Superradiant Charge Density Waves in a Driven Cavity-Matter Hybrid

Luka Skolc, Sambuddha Chattopadhyay, Filip Marijanović +4

Optical cavities enable strong, long-range, light-matter interactions that can drive collective ordering phenomena, such as superradiant self-organization in ultracold atomic gases…

cond-mat.str-el2026

Competing states in the triangular-lattice - Heisenberg model: a dynamical density-matrix renormalization group study

Shengtao Jiang, Steven R. White, Steven A. Kivelson +1

Previous studies of the triangular-lattice -- Heisenberg antiferromagnet have inferred the existence of a non-magnetic ground-state phase for an intermediate rang…

cond-mat.str-el2026

Exactly Solvable Topological Phase Transition in a Quantum Dimer Model

Laura Shou, Jeet Shah, Matthew Lerner-Brecher +3

We consider a family of generalized Rokhsar-Kivelson (RK) Hamiltonians, which are reverse-engineered to have an arbitrary edge-weighted superposition of dimer coverings as their ex…

cond-mat.str-el2025

Uncovering surface states of the Dirac semimetal BaMg2Bi2

A. De Vita, J. Bakkelund, H. Świątek +13

BaMg2Bi2 is a Dirac semimetal characterized by a simple Dirac cone crossing the Fermi level at the center of the Brillouin zone, protected by C3 rotational symmetry. Together with…

cond-mat.str-el2025

Evolution of charge-density-wave soft phonon modes in

Avishek Maity, Stephan Rosenkranz, Raymond Osborn +8

We investigated the lattice dynamics of quasi-two-dimensional Pd-intercalated in relation to its charge-density-wave (CDW) transitions by means of x-ray diffuse a…