Renormalization of spin excitations and Kondo effect in open-shell nanographenes

D Jacob, R Ortiz, J Fernández-Rossier - Physical Review B, 2021 - APS
We study spin excitations and the Kondo effect in open-shell nanographenes, motivated by
recent scanning tunneling inelastic spectroscopy experiments. Specifically, we consider …

Global phase diagram of a spin-orbital Kondo impurity model and the suppression of Fermi-liquid scale

Y Wang, E Walter, SSB Lee, KM Stadler, J Von Delft… - Physical review …, 2020 - APS
Many correlated metallic materials are described by Landau Fermi-liquid theory at low
energies, but for Hund metals the Fermi-liquid coherence scale T FL is found to be …

Extended dissipaton-equation-of-motion approach to study the electronic migration in adatom-graphene composite

Y Su, Y Wang, ZF Zhu, Y Kong, RX Xu, YJ Yan… - arXiv preprint arXiv …, 2024 - arxiv.org
Graphene has garnered significant attention due to its unique properties. Among its many
intriguing characteristics, the tuning effects induced by adsorbed atoms (adatoms) provide …

Activation of magnetic moments by annealing in chemical vapor deposited graphene

H Shin, E Sajadi, A Khademi, S Lüscher, JA Folk - Physical Review B, 2022 - APS
The effects of annealing on chemical vapor deposited graphene are investigated via a weak
localization magnetoresistance measurement. Annealing at 300∘ C in inert gases, a …

Poor man's scaling: XYZ Coqblin–Schrieffer model revisited

E Kogan, Z Shi - Journal of Statistical Mechanics: Theory and …, 2021 - iopscience.iop.org
We derive the third-order poor man's scaling equation for a generic Hamiltonian describing
a quantum impurity embedded into an itinerant electron gas. We show that the XYZ Coqblin …

Activation of magnetic moments in CVD-grown graphene by annealing

H Shin, E Sajadi, A Khademi, S Lüscher… - arXiv preprint arXiv …, 2021 - arxiv.org
Effects of annealing on chemical vapor deposited graphene are investigated via a weak
localization magnetoresistance measurement. Annealing at\SI {300}{\celsius} in inert gases …

Large RKKY coupling from multiple scattering in armchair graphene nanoribbons

VM Nguyen, CS Chu - Physical Review B, 2020 - APS
We consider the Ruderman-Kittel-Kasuya-Yosida (RKKY) type coupling between two
magnetic impurities on metallic armchair graphene nanoribbons (AGNR). Our key findings …

A Study of Kondo Physics and Unconventional Superconductivity in Inhomogeneous Electronic Systems

J Sidhu - 2020 - search.proquest.com
Graphene is a two-dimensional material that is an excellent candidate for a wide range of
applications. There is much interest in possible magnetism induced by point defects. For …