45 citations · 170 across the 22 of their papers we have counts for
23 papers
Nonrelativistic and Relativistic Contributions to Spin-Momentum Locking and Spin Photogalvanic Effect in an Altermagnetic Multiferroic
Giuseppe Cuono, Subhadeep Bandyopadhyay, Amar Fakhredine +6
Altermagnetic multiferroics provide a platform where non-relativistic spin-momentum locking (SML) coexists with relativistic spin textures, yet disentangling their different origin…
Revisiting the topological properties of XMg2Bi2 (X = Ca, Sr, Ba, Yb and Eu)
Antoni Facca, Xujia Gong, Amar Fakhredine +2
Density functional theory is known to underestimate band gaps in semiconductors and to over- estimate inverted band gaps, frequently exaggerating the predicted size of the topologi…
Defect Geometry Selects Polar and Anomalous Hall Phases in Two-Dimensional Altermagnets
Xujia Gong, Amar Fakhredine, Hosein Alavi-Rad +6
Point defects in altermagnets can create phases absent in the pristine host by selectively breaking crystal symmetries. Combining symmetry analysis, first-principles calculations,…
Magnetically tunable symmetry-enforced nodal lines producing huge anomalous Hall conductivity in altermagnetic -MnTe
Mathews Benny, Xujia Gong, Amar Fakhredine +17
Altermagnetic -MnTe exhibits huge anomalous Hall conductivity (AHC) up to room-temperature together with weak ferromagnetism arising from spin and orbital polarizations. We clar…
Effect of polar distortions on the linear and nonlinear anomalous Hall conductivity of altermagnetic -MnTe
Mathews Benny, Sahar Izadi Vishkayi, Amar Fakhredine +2
Altermagnetic -MnTe with Néel vector along the -axis exhibits a finite anomalous Hall conductivity (AHC) and weak ferromagnetism along the -axis. As already demonstrated i…
Symmetry-protected nodal planes and accidental nodal surfaces in mixed odd-even wave spin-momentum locking of relativistic altermagnets
Xujia Gong, Amar Fakhredine, Sahar Izadi Vishkayi +1
Non-relativistic spin--momentum locking in altermagnets exhibits an even number of nodal planes. In the relativistic limit, the number of nodal planes can be lowered by symmetry re…
Quantum anomalous Hall conductivity in altermagnets under applied magnetic field
Meysam Bagheri Tagani, Amar Fakhredine, Carmine Autieri
We investigate the emergence of quantum anomalous Hall conductivity in a two-dimensional -wave altermagnet on a Lieb lattice under an external magnetic field. Altermagnetic orde…
Interplay between Relativistic Spin-Momentum Locking and Breaking of Inversion Symmetry: conditions for p-wave magnetism
Amar Fakhredine, Giuseppe Cuono, Jan Skolimowski +2
We investigate the interplay between relativistic spin-momentum locking arising from altermagnetism and various forms of inversion symmetry breaking. Depending on the symmetry brea…
Relativistic spin-momentum locking in ferromagnets
Xujia Gong, Amar Fakhredine, Carmine Autieri
The relativistic spin-momentum locking has been proven in time-reversal-breaking classes of materials with zero net magnetization in the non-relativistic limit, such as altermagnet…
Staggered Dzyaloshinskii-Moriya and canting angle in centrosymmetric altermagnetic and ferromagnetic phases: influence on the anomalous Hall effect and Weyl points
Mathews Benny, Xujia Gong, Kamil Jamroszczyk +5
We present a simple methodology to compute the anomalous Hall conductivity (AHC) as a function of the canting angles in ferromagnets and altermagnets, starting from a nonmagnetic H…
Competing magnetic states in a non-coplanar Kagome magnet
Xiaodong Hu, Amar Fakhredine, Roger Guzman +15
Non-collinear Kagome antiferromagnets (AFMs) Mn3X (X = Sn, Ga, Ge, Ir, Pt) can generate an anomalous Hall effect (AHE) despite vanishing net magnetization, enabled by broken time-r…
Magnetic Frustration Enforced Electronic Reconstruction in Ni intercalated NbSe: Suppression of Electronic Orders
Ashutosh S. Wadge, Alexander Kazakov, Xujia Gong +14
We investigate the single crystals of NiNbSe, revealing that Ni intercalation profoundly alters the physical properties of NbSe. Magnetic measurements clearly show…
Relativistic Spin-momentum locking in altermagnets
Carmine Autieri, Amar Fakhredine
Spin-momentum locking in altermagnets has been deeply explored in the non-relativistic limit. Including spin-orbit coupling, altermagnets exhibit antisymmetric exchange interaction…
Inducing ferromagnetism by structural engineering in a strongly spin-orbit coupled oxide
Ji Soo Lim, Carmine Autieri, Merit Spring +17
Magnetic materials with strong spin-orbit coupling (SOC) are essential for the advancement of spin-orbitronic devices, as they enable efficient spin-charge conversion, complex magn…
Dirac edge states as signature of two-dimensional altermagnetic topological crystalline phase
Raghottam M. Sattigeri, Xujia Gong, Amar Fakhredine +2
Two-dimensional (2D) metallic altermagnets present exciting opportunities for both fundamental research and practical innovations. Their ability to enhance tunneling magnetoresista…
Coexistence of Rashba and Dirac dispersions on the surface of centrosymmetric topological insulator decorated with transition metals
Giuseppe Cuono, Rajibul Islam, Amar Fakhredine +1
The Dirac cone originates from the bulk topology, yet its primary contribution comes from the surface since spatially, the Dirac state emerges at the boundary between the trivial a…
Tunability of the magnetic properties in Ni intercalated transition metal dichalcogenide NbSe
Xujia Gong, Amar Fakhredine, Carmine Autieri
We study the magnetic and electronic properties of Ni-intercalated NbSe.We calculate the magnetic exchanges of NiNbSe ( and ) and find that the out-of…
Staggered Dzyaloshinskii-Moriya inducing weak ferromagnetism in centrosymmetric altermagnets and weak ferrimagnetism in noncentrosymmetric altermagnets
Carmine Autieri, Raghottam M Sattigeri, Giuseppe Cuono +1
The Dzyaloshinskii-Moriya interaction (DMI) has explained successfully the weak ferromagnetism in {\it some} centrosymmetric antiferromagnets. However, in the last years, it was ge…
Huge Dzyaloshinskii-Moriya interactions in Re_Co_Pt thin films
Amar Fakhredine, Andrzej Wawro, Carmine Autieri
We investigate the magnetization and the Dzyaloshinskii-Moriya interactions (DMI) in Pt/Co/Re thin films in the case of perfect interfaces and upon the introduction of intermixing…
Interplay between altermagnetism and nonsymmorphic symmetries generating large anomalous Hall conductivity by semi-Dirac points induced anticrossings
Amar Fakhredine, Raghottam M. Sattigeri, Giuseppe Cuono +1
We investigate the interplay between altermagnetic spin-splitting and nonsymmorphic symmetries using the space group no. 62 as a testbed. Studying different magnetic orders by mean…
Correlation-driven topological transition in Janus VSiGeP2As2
Ghulam Hussain, Amar Fakhredine, Rajibul Islam +3
The appearance of intrinsic ferromagnetism in 2D materials opens the possibility of investigating the interplay between magnetism and topology. The magnetic anisotropy energy (MAE)…
Topological phase diagram of Pb1-xSnxSe1-yTey
Giuseppe Cuono, Ghulam Hussain, Amar Fakhredine +1
We reproduce the mirror Chern number phase diagram for the quaternary compound Pb1-xSnxSe1-yTey combining accurate density functional theory and tight-biding model. The tight bindi…
Sign change of the anomalous Hall effect and the anomalous Nernst effect in Weyl semimetal CeAlSi
Md Shahin Alam, Amar Fakhredine, Mujeeb Ahmed +9
We report the anomalous Hall effect (AHE) and the anomalous Nernst effect (ANE) data for the non-collinear Weyl semimetal CeAlSi. The anomalous Hall conductivity (σ_ij^A) was measu…