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Altermagnetism has been proposed as a new type of magnetism, simultaneously exhibiting compensated spin moments in real space and spin-split electronic bands in reciprocal space. Alternating chiral magnon splitting is considered a unique…

Materials Science · Physics 2025-03-18 Yi-Fan Zhang , Xiao-Sheng Ni , Ke Chen , Kun Cao

Altermagnetism is a newly discovered magnetic class named after the alternating spin polarizations in both real and reciprocal spaces. Like the spin-splitting of electronic bands, the magnon bands in altermagnets are predicted to exhibit…

Strongly Correlated Electrons · Physics 2024-10-16 Zheyuan Liu , Makoto Ozeki , Shinichiro Asai , Shinichi Itoh , Takatsugu Masuda

Altermagnetism (AM), a newly discovered magnetic state, ingeniously integrates the properties of ferromagnetism and antiferromagnetism, representing a significant breakthrough in the field of magnetic materials. Despite experimental…

We investigate the two-dimensional (2D) highly spin-polarized electron accumulation layers commonly appearing near the surface of n-type polar semiconductors BiTeX (X = I, Br, and Cl) by angular-resolved photoemission spectroscopy. Due to…

Antiferromagnetic hexagonal MnTe is a promising material for spintronic devices relying on the control of antiferromagnetic domain orientations. Here we report on neutron diffraction, magnetotransport, and magnetometry experiments on…

Altermagnets (AMs) constitute a novel class of spin-compensated materials in which opposite-spin sublattices are connected by a crystal rotation, causing their electronic iso-energy surfaces to be spin-split. While cubic and tetragonal…

The control of the electron spin by external means is a key issue for spintronic devices. Using spin- and angle-resolved photoemission spectroscopy (SARPES) with three-dimensional spin detection, we demonstrate operando electrostatic spin…

We report ab initio calculations of the electronic band structure and the phonon dispersion relations of the zincblende-type mercury chalcogenides (beta-HgS, HgSe, and HgTe). The latter have been used to evaluate the temperature dependence…

Materials Science · Physics 2009-08-26 M. Cardona , R. K. Kremer , R. Lauck , G. Siegle , A. Munoz , A. H. Romero

We have used polarized-neutron inelastic scattering to resolve the spin fluctuations in superconducting FeSe0.5Te0.5 into components parallel and perpendicular to the layers. A spin resonance at an energy of 6.5 meV is observed to develop…

Unconventional superconductors are often characterized by numerous competing and even intertwined orders in their phase diagrams. In particular, the electronic nematic phases, which spontaneously break rotational symmetry and often…

Magnon band structures in altermagnets are characterized by an energy splitting of modes with opposite chirality, even in the absence of applied external fields and relativistic effects, due to an anisotropy in the Heisenberg exchange…

Materials Science · Physics 2024-06-03 Markus Weißenhofer , Alberto Marmodoro

We show that the efficiency of manipulating electron spin in semiconductor quantum wells can be enhanced by tuning the strain strength. The effect combining intrinsic and strain-induced spin splitting varies for different systems, which…

Mesoscale and Nanoscale Physics · Physics 2008-07-16 Yuan Li , You-Quan Li

It is shown that the flow of electric current in an altermagnet results in the formation of a homogeneous electron spin orientation in the sample. The spin of the conduction electrons generated in altermagnets with $d$-wave spin-momentum…

Mesoscale and Nanoscale Physics · Physics 2025-03-18 L. E. Golub , L. Šmejkal

We have investigated the nonreciprocal electrical transport, that is a nonlinear resistance effect depending on the current direction, in multiferroic Rashba semiconductor (Ge,Mn)Te. Due to coexistence of ferromagnetic and ferroelectric…

We have studied the effects of Mn concentration on the ballistic spin-polarized transport through diluted magnetic semiconductor heterostructures with a single paramagnetic layer. Using a fitted function for zero-field conduction band…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Alireza Saffarzadeh

The magnetization dynamics in diluted magnetic semiconductor heterostructures based on (Zn,Mn)Se and (Cd,Mn)Te has been studied experimentally by optical methods and simulated numerically. In the samples with nonhomogeneous magnetic ion…

Mesoscale and Nanoscale Physics · Physics 2015-05-19 A. A. Maksimov , D. R. Yakovlev , J. Debus , I. I. Tartakovskii , A. Waag , G. Karczewski , T. Wojtowicz , J. Kossut , M. Bayer

Altermagnetism is an unconventional form of antiferromagnetism characterized by momentum-dependent spin polarization of electronic states and zero net magnetization, arising from specific crystalline symmetries. In the presence of…

Materials Science · Physics 2026-02-03 Chao Chen Ye , Karma Tenzin , Jagoda Sławińska , Carmine Autieri

Altermagnets host spin-split electronic bands despite zero net magnetization, opening new routes for spintronics beyond conventional ferromagnets. Going beyond symmetry-based classifications, which specify allowed terms but not their…

Materials Science · Physics 2026-05-21 Luigi Camerano , Federico Bisti , Gianni Profeta

We generalize the spin Meissner effect for exciton-polariton condensate confined in annular geometries to the case of non-trivial topology of the condensate wavefunction. In contrast to the conventional spin Meissner state, topological spin…

Mesoscale and Nanoscale Physics · Physics 2016-09-07 D. R. Gulevich , D. V. Skryabin , A. P. Alodjants , I. A. Shelykh

We demonstrate how the Rashba spin-orbit coupling in semiconductor heterostructures can produce and control a spin-polarized current without ferromagnetic leads. Key idea is to use spin-double refraction of an electronic beam with a nonzero…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 V. Marigliano Ramaglia , D. Bercioux , V. Cataudella , G. De Filippis , C. A. Perroni