The physics of quantum materials is dictated by many-body interactions and mathematical
concepts such as symmetry and topology that have transformed our understanding of matter …

Many quasi-one-dimensional (1D) materials are experimental approximations to the
textbook models of Peierls instabilities and collective excitations in 1D electronic systems …

Ultrafast nonequilibrium dynamics offer a route to study the microscopic interactions that
govern macroscopic behavior. In particular, photoinduced phase transitions (PIPTs) in solids …

Chiral edge states are the hallmark of two-and three-dimensional topological materials, but
their one-dimensional (1D) analog has not yet been found. We report that the 1D topological …

The structure and chemical state of a boron chain, isoelectronic to polycumulene, were
obtained with a combination of positron diffraction, photoelectron spectroscopy, and first …

The ground state property of a Au-induced atomic wire array on a stepped Si (553) surface
with interesting 1D metallic bands was investigated. Electron diffraction and scanning …

Density functional theory calculations are performed to determine the mechanism and origin
of the intensively debated (4× 1)–(8× 2) phase transition of the Si (111)-In nanowire array …

Metal monochalcogenides (MX, M= Ga, In; X= S, Se, Te) offer a large variety of electronic
properties depending on chemical composition, number of layers, and stacking order. InTe …

The In/Si (111)-(4× 1) surface is a paradigmatic example of a quasi-one-dimensional system
showing a reversible structural and electronic (metal-insulator) phase transition when the …

We used ultrafast electron diffraction and density-functional theory calculations to gain
insight into the charge density wave (CDW) formation on In/Si (111). Weak excitation by a …