Rafael González‐Hernández

Quantization of Galilean Electrodynamics: a non-trivially trivial theory

Rafael González‐Hernández, Juan Miguel Nieto García, Ander Urtiaga

We consider the quantization of the non-relativistic limit of electrodynamics called Galilean electrodynamics. To that end, we apply the Dirac bracket formalism to understand the constraints and dynamics of the theory and analyze its gauge structure. We show that the theory is …

Fermi surface studies of altermagnetic CrSb from Shubnikov–de Haas oscillations

Anonymous, B. V. Schwarze, Jaafar N. Ansari, Tommy Kotte et autres

Within the family of altermagnets, CrSb is a metallic, collinearly ordered material that exhibits particularly strong symmetry-induced spin splitting in its band structure. In this study, we combine electrical magnetotransport measurements up to 68 T on microfabricated single-crystalline CrSb with first-principles calculations …

de, cz, gr (code pays fourni par la source)

Emergent d -Wave Altermagnetism in Orthogonally Twisted Bilayer CrPS4

Alberto M. Ruiz, Diego López‐Alcalá, Rafael González‐Hernández, José J. Baldoví

Abstract Twistronics is a powerful strategy to engineer novel quantum states by controlling the relative orientation between layered materials. Here, we demonstrate that an orthogonally twisted bilayer CrPS4 shows d-wave altermagnetism driven purely by structural rotation. Symmetry analysis reveals that the 90° …

es, co (code pays fourni par la source)

Twist-Induced Altermagnetism in a Metallic van der Waals Antiferromagnet

Alberto M. Ruiz, Andrei Shumilin, Rafael González‐Hernández, José J. Baldoví

High Resolution Image Download MS PowerPoint Slide Altermagnetism offers a promising route for next-generation spintronic devices. In two-dimensional (2D) magnets, twist engineering enables its realization by breaking the combined inversion and time-reversal symmetry ( P T ). Here, by first-principles calculations and …

es (code pays fourni par la source)

Evolution of structural and electronic properties in the Janus-Kagome system Nb3-xTaxTeI7

José Gutiérrez-Londoño, R. Ponce‐Pérez, Rafael González‐Hernández, J. Guerrero-Sánchez

Emergent Altermagnetism and Topological Response In Janus MnPSX Monolayers

J. Guerrero-Sánchez, R. Ponce‐Pérez, D.M. Hoat, Rafael González‐Hernández

mx, vn (code pays fourni par la source)

Spin and pair density waves in two-dimensional altermagnetic metals

Nikolaos Parthenios, Pietro M. Bonetti, Rafael González‐Hernández, Warlley H. Campos et autres

Altermagnetism, a recently proposed and experimentally confirmed class of magnetic order, features collinear compensated magnetism with unconventional spin-split bands. Here, we show that in a metallic 2D d -wave altermagnet with [ C 2 | | C 4 ] symmetry, secondary instabilities …

de, us, co, cz (code pays fourni par la source)

Model Hamiltonian for altermagnetic topological insulators

Rafael González‐Hernández, Bernardo Uribe

We present models of topological insulating Hamiltonians exhibiting intrinsic altermagnetic features, protected by combined threefold or fourfold rotational symmetries with time-reversal. We demonstrate that the spin Chern number serves as a robust topological invariant in two-dimensional systems, while for three-dimensional structures, the …

Canted magnetism, spin interactions, and anisotropic magnetodielectric response in CoTeMo O 6

Chetan Dhital, Chaebin Kim, Brady Wilson, Ram Rai et autres

We investigate the chiral magnet $\mathrm{CoTeMo}{\mathrm{O}}_{6}$ (CTMO), an orthorhombic $\mathrm{P}{2}_{1}{2}_{1}2$ system with a canted antiferromagnetic structure and weak ferromagnetism along the $a$ axis. Despite lacking a unique polar axis in its crystal structure, CTMO exhibits significant magnetodielectric coupling, which is consistent with …

us, es (code pays fourni par la source)

Model Hamiltonian for Altermagnetic Topological Insulators

Rafael González‐Hernández, Bernardo Uribe

We present models of topological insulating Hamiltonians exhibiting intrinsic altermagnetic features, protected by combined three-fold or four-fold rotational symmetries with time-reversal. We demonstrate that the spin Chern number serves as a robust topological invariant in two-dimensional systems, while for three-dimensional structures, the …

Revealing the Altermagnetism in Hematite via XMCD Imaging and Anomalous Hall Electrical Transport

Edgar Galindez‐Ruales, Rafael González‐Hernández, Christin Schmitt, Shubhankar Das et autres

Abstract Altermagnets are a class of magnetic materials that exhibit unconventional transport properties, such as an anomalous Hall effect (AHE), despite having compensated sublattice magnetic moments. In this study, fundamental experimental evidence of the altermagnetic nature of hematite (α‐Fe2O3), is reported combining …

de, co, se, kr, cn, cz, il, no (code pays fourni par la source)

Chiral symmetry and magnetism in a three-dimensional kagome lattice: R Pt 2 B prototype crystals ( R = La and Nd)

D. Torres-Amaris, Rafael González‐Hernández, A. Romero, A. C. Garcia‐Castro

Chirality in crystals arises from the exclusive presence of proper symmetry operations, such as rotations and screw axes, while lacking improper operations like inversion, mirror planes, and roto-inversions. Crystallographic chirality is expected to be coupled with magnetic responses in magnetically active chiral …

co, us (code pays fourni par la source)