Axion physics in condensed-matter systems

DM Nenno, CAC Garcia, J Gooth, C Felser… - Nature Reviews …, 2020 - nature.com
Axions are hypothetical particles that were proposed to solve the strong charge–parity
problem in high-energy physics. Although they have long been known in quantum field …

Intrinsic magnetic topological materials

Y Wang, F Zhang, M Zeng, H Sun, Z Hao, Y Cai… - Frontiers of …, 2023 - Springer
Topological states of matter possess bulk electronic structures categorized by topological
invariants and edge/surface states due to the bulk-boundary correspondence. Topological …

High-throughput calculations of magnetic topological materials

Y Xu, L Elcoro, ZD Song, BJ Wieder, MG Vergniory… - Nature, 2020 - nature.com
The discoveries of intrinsically magnetic topological materials, including semimetals with a
large anomalous Hall effect and axion insulators,–, have directed fundamental research in …

Light control with Weyl semimetals

C Guo, VS Asadchy, B Zhao, S Fan - Elight, 2023 - Springer
Weyl semimetals are topological materials whose electron quasiparticles obey the Weyl
equation. They possess many unusual properties that may lead to new applications. This is …

Axion-field-enabled nonreciprocal thermal radiation in Weyl semimetals

B Zhao, C Guo, CAC Garcia, P Narang, S Fan - Nano letters, 2020 - ACS Publications
Objects around us constantly emit and absorb thermal radiation. The emission and
absorption processes are governed by two fundamental radiative properties: emissivity and …

Anomalous Hall Conductivity and Nernst Effect of the Ideal Weyl Semimetallic Ferromagnet EuCd2As2

S Roychowdhury, M Yao, K Samanta, S Bae… - Advanced …, 2023 - Wiley Online Library
Weyl semimetal is a unique topological phase with topologically protected band crossings in
the bulk and robust surface states called Fermi arcs. Weyl nodes always appear in pairs with …

Ab initio overestimation of the topological region in Eu-based compounds

G Cuono, RM Sattigeri, C Autieri, T Dietl - Physical Review B, 2023 - APS
An underestimation of the fundamental band gap values by the density functional theory
within the local density approximation and associated approaches is a well-known …

Quantum transport evidence of Weyl fermions in an epitaxial ferromagnetic oxide

K Takiguchi, YK Wakabayashi, H Irie… - Nature …, 2020 - nature.com
Magnetic Weyl semimetals have novel transport phenomena related to pairs of Weyl nodes
in the band structure. Although the existence of Weyl fermions is expected in various oxides …

Sub‐wavelength passive optical isolators using photonic structures based on Weyl semimetals

VS Asadchy, C Guo, B Zhao… - Advanced Optical Materials, 2020 - Wiley Online Library
The paper presents the design of sub‐wavelength high‐performing nonreciprocal optical
devices using recently discovered magnetic Weyl semimetals. These passive bulk …

Optical Tellegen metamaterial with spontaneous magnetization

S Safaei Jazi, I Faniayeu, R Cichelero… - Nature …, 2024 - nature.com
The nonreciprocal magnetoelectric effect, also known as the Tellegen effect, promises a
number of groundbreaking phenomena connected to fundamental (eg, electrodynamics of …