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Enhancing Chemoselectivity of On-Surface Reactions on Reconstructed Au(110): The Case of a Pentalene-Bridged Polyacene Analogue.
J Am Chem Soc
January 2025
Nanotech@surfaces Laboratory, Empa - Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland.
Polyacene analogues, consisting of short acene segments separated by nonbenzenoid rings, offer intriguing electronic properties and magnetic interactions. Pentalene-bridged polyacenes (PPs), in particular, hold promise for enhancing the electrical conductivity and potential open-shell ground states. However, PPs have remained elusive in solution chemistry due to poor solubility and limited synthetic protocols.
View Article and Find Full Text PDFCoalescence of multiple topological orders in quasi-one-dimensional bismuth halide chains.
Nat Commun
January 2025
School of Physics, Beihang University, Haidian District, Beijing, China.
Topology is being widely adopted to understand and to categorize quantum matter in modern physics. The nexus of topology orders, which engenders distinct quantum phases with benefits to both fundamental research and practical applications for future quantum devices, can be driven by topological phase transition through modulating intrinsic or extrinsic ordering parameters. The conjoined topology, however, is still elusive in experiments due to the lack of suitable material platforms.
View Article and Find Full Text PDFDetecting Multipartite Entanglement Patterns Using Single-Particle Green's Functions.
Phys Rev Lett
December 2024
Brookhaven National Laboratory, Condensed Matter Physics and Materials Science Division, Upton, New York 11973, USA.
We present a protocol for detecting multipartite entanglement in itinerant many-body electronic systems using single-particle Green's functions. To achieve this, we first establish a connection between the quantum Fisher information and single-particle Green's functions by constructing a set of witness operators built out of single electron creation and destruction operators in a doubled system. This set of witness operators is indexed by a momentum k.
View Article and Find Full Text PDF2D Surface Optical Reflectance for use in Harsh Reactive Environments.
J Phys Condens Matter
January 2025
Department of Physics, Lund University, BOX 118, Lund, 221 00, SWEDEN.
In recent years, studies of surfaces at more realistic conditions has advanced significantly, leading to an increased understanding of surface dynamics under reaction conditions. The development has mainly been due to the development of new experimental techniques or new experimental approaches. Techniques such as High Pressure Scanning Tunneling/Force Microscopy (HPSTM/HPAFM), Ambient Pressure X-ray Photo emission Spectroscopy (APXPS), Surface X-Ray Diffraction (SXRD), Polarization-Modulation InfraRed Reflection Absorption Spectroscopy (PMIRRAS) and Planar Laser Induced Fluorescence (PLIF) at semi-realistic conditions has been used to study planar model catalysts or industrial materials under operating conditions.
View Article and Find Full Text PDFFractional Spinon Quasiparticles in Open-Shell Triangulene Spin-1/2 Chains.
J Am Chem Soc
January 2025
Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai 201210, China.
The emergence of spinon quasiparticles, which carry spin but lack charge, is a hallmark of collective quantum phenomena in low-dimensional quantum spin systems. While the existence of spinons has been demonstrated through scattering spectroscopy in ensemble samples, real-space imaging of these quasiparticles within individual spin chains has remained elusive. In this study, we construct individual Heisenberg antiferromagnetic spin-1/2 chains using open-shell [2]triangulene molecules as building blocks.
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