This content will become publicly available on March 1, 2027

Title: A metastable tetragonal phase in two-dimensional halide perovskite lattices driven by a coherent Higgs mode
Award ID(s):
2404059
PAR ID:
10686312
Author(s) / Creator(s):
; ; ; ; ;
Publisher / Repository:
Nature Materials
Date Published:
Journal Name:
Nature Materials
Volume:
25
Issue:
3
ISSN:
1476-1122
Page Range / eLocation ID:
405 to 411
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
More Like this
  1. We consider a (very) simple version of the restricted three body problem in general relativity. The background geometry is given by a Schwarzschild solution governing the motion of two bodies of masses $$m_1$$ and $$m_2$$. We assume that corrections to the trajectory of the body of mass $$m_1$$ due to the presence of the mass $$m_2$$ are given by a Newtonian approximation where Poisson's equation is solved with respect to the Schwarzschild background geometry. Under these assumptions, we derive approximate equations of motion for the corrections to the trajectory of the body of mass $$m_1$$. 
    more » « less
  2. null (Ed.)
  3. Abstract Taking a representation-theoretic viewpoint, we construct a continuous associahedron motivated by the realization of the generalized associahedron in the physical setting. We show that our associahedron shares important properties with the generalized associahedron of typeA. Our continuous associahedron is convex and manifests a cluster theory: the points which correspond to the clusters are on its boundary, and the edges that correspond to mutations are given by intersections of hyperplanes. This requires development of several methods that are continuous analogues of discrete methods. We conclude the paper by showing that there is a sequence of embeddings of typeAgeneralized associahedra into our continuous associahedron. 
    more » « less