917 citations · 3.7k across the 40 of their papers we have counts for
27 papers · 1 filter
Coexistence of d-Wave Altermagnetism and Topological States in Janus FeSeX (X = S, Te) Monolayers
Alvaro Gonzalez-Garcia, William Lopez-Perez, Paola Pacheco +2
The interplay between unconventional magnetism and band topology in two-dimensional materials has emerged as an important theme in condensed matter physics. Here, we present first-…
Twist-engineering of a robust Quantum Spin Hall phase in -/flat bismuthene bilayer from first principles
Umberto Pelliccia, Alberto M. Ruiz, Diego López-Alcalá +3
Twist-engineering of topological phases in two-dimensional materials offers a powerful route to modulate electronic structure beyond conventional strain or chemical control. In par…
Emergent -wave altermagnetism in orthogonally twisted bilayer CrPS
Alberto M. Ruiz, Diego López-Alcalá, Rafael González-Hernández +1
Twistronics is a powerful strategy to engineer novel quantum states by controlling the relative orientation between layered materials. Here, we demonstrate that an orthogonally twi…
Twist-induced altermagnetism in a metallic van der Waals antiferromagnet
Alberto M. Ruiz, Andrei Shumilin, Rafael González-Hernández +1
Altermagnetism -a magnetic state characterized by spin-polarized electronic bands at zero net magnetization- offers a promising route for next-generation spintronic devices. In two…
Fermi-surface studies of altermagnetic CrSb from Shubnikov-de Haas oscillations
Sajal Naduvile Thadathil, Beat Valentin Schwarze, Jaafar Ansari +14
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…
Fermi Surface Reconstruction and Anisotropic Linear Magnetoresistance in the Charge Density Wave Topological Semimetal TaTe4
D. Silvera-Vega, J. Rojas-Castillo, E. Herrera-Vasco +7
Understanding the interplay between topology and correlated electron states is central to the study of quantum materials. TaTe is a quasi-one-dimensional charge density wave (C…
Tuning the Topological Properties of the Antiferromagnetic V(BiSb)Te via Sb concentration
D. A-León, D. A. Landínez Téllez, J. Roa-Rojas +1
The investigation of topological materials has uncovered groundbreaking phases of matter with significant implications for quantum technologies. Here, we explore the antiferromagne…
Eightfold Degenerate Dirac Nodal Line in Collinear Antiferromagnet MnSi
Victor Mendoza-Estrada, Rafael González-Hernández, Bernardo Uribe +1
We study the electronic, magnetic, and spin transport properties of the orthorhombic MnSi compound in the phase using symmetry analysis and ab-initio calculations…
Spin Chern number in altermagnets
Rafael Gonzalez-Hernandez, Higinio Serrano, Bernardo Uribe
This work explores the topological properties of altermagnets, a novel class of collinear magnetic materials. We employ equivariant K-theory of magnetic groups and Hamiltonian mode…
Observation of the anomalous Nernst effect in altermagnetic candidate Mn5Si3
Antonin Badura, Warlley H. Campos, Venkata K. Bharadwaj +20
The anomalous Nernst effect generates transverse voltage to the applied thermal gradient in magnetically ordered systems. The effect was previously considered excluded in compensat…
Non-relativistic torque and Edelstein effect in noncollinear magnets
Rafael González-Hernández, Philipp Ritzinger, Karel Výborný +2
The Edelstein effect is the origin of the spin-orbit torque: a current-induced torque that is used for the electrical control of ferromagnetic and antiferromagnetic materials. This…
Revealing the Altermagnetism in Hematite via XMCD Imaging and Anomalous Hall Electrical Transport
Edgar Galindez-Ruales, Rafael Gonzalez-Hernandez, Christin Schmitt +16
Altermagnets are a class of magnetic materials that exhibit unconventional transport properties, such as an anomalous Hall effect, despite having compensated sublattice magnetic mo…
Spin Weyl Topological Insulators
Rafael Gonzalez-Hernandez, Bernardo Uribe
The quantum nature of electron spin is crucial for establishing topological invariants in real materials. Since the spin does not in general commute with the Hamiltonian, some of t…
Observation of the anomalous Hall effect in a layered polar semiconductor
Seo-Jin Kim, Jihang Zhu, Mario M. Piva +10
Progress in magnetoelectric materials is hindered by apparently contradictory requirements for time-reversal symmetry broken and polar ferroelectric electronic structure in common…
Fermi surface of magnetic kagome compound GdV6Sn6 investigated using de Haas van Alphen Oscillations
C. Dhital, G. Pokharel, B. Wilson +6
The shape of the Fermi surface, and the cyclotron effective mass of the kagome magnet GdV6Sn6 charge carriers are investigated using de Haas van Alphen (dHvA) oscillations measurem…
Multi-k magnetic structure and large anomalous Hall effect in candidate magnetic Weyl semimetal NdAlGe
C. Dhital, R. L. Dally, R. Ruvalcaba +15
The magnetic structure, magnetoresistance, and Hall effect of non-centrosymmetric magnetic semimetal NdAlGe are investigated revealing an unusual magnetic state and anomalous trans…
Axion insulators protected by C2T and their K-theory invariants and material realization
Rafael Gonzalez-Hernandez, Carlos Pinilla, Bernardo Uribe
Axion insulators are generally understood as magnetic topological insulators whose Chern-Simons axion coupling term is quantized and equal to . Inversion and time reversal, or t…
On quasi-nodal spheres and the spin Hall effect: the case of YH3 and CaTe
Rafael Gonzalez-Hernandez, Carlos Pinilla, Bernardo Uribe
Band inversion is a known feature in a wide range of topological insulators characterized by a change of orbital type around a high-symmetry point close to the Fermi level. In some…
Spontaneous anomalous Hall effect arising from an unconventional compensated magnetic phase in a semiconductor
R. D. Gonzalez Betancourt, J. Zubáč, R. J. Gonzalez-Hernandez +12
The anomalous Hall effect, commonly observed in metallic magnets, has been established to originate from the time-reversal symmetry breaking by an internal macroscopic magnetizatio…
Quasi-nodal lines in rhombohedral magnetic materials
Rafael González-Hernández, Erick Tuirán, Bernardo Uribe
A well-established result in condensed matter physics states that materials crystallizing in symmetry groups containing glide reflection symmetries possess nodal lines on the energ…
Prediction of unconventional magnetism in doped FeSb2
I. I. Mazin, K. Koepernik, M. D. Johannes +2
It is commonly believed that in typical collinear antiferromagnets, with no net magnetization, the energy bands are spin-(Kramers-degenerate. The opposite case is usually associate…
Chiralities of nodal points along high symmetry lines with screw rotation symmetry
Rafael González-Hernández, Erick Tuiran, Bernardo Uribe
Screw rotations in nonsymmorphic space group symmetries induce the presence of hourglass and accordion shape band structures along screw invariant lines whenever spin-orbit couplin…
Topological electronic structure and Weyl points in nonsymmorphic hexagonal materials
Rafael González-Hernández, Erick Tuiran, Bernardo Uribe
Using topological band theory analysis we show that the nonsymmorphic symmetry operations in hexagonal lattices enforce Weyl points at the screw-invariant high-symmetry lines of th…
Observation of the Anomalous Hall Effect in a Collinear Antiferromagnet
Zexin Feng, Xiaorong Zhou, Libor Šmejkal +16
Time-reversal symmetry breaking is the basic physics concept underpinning many magnetic topological phenomena such as the anomalous Hall effect (AHE) and its quantized variant. The…