A5020300844- Magnetic properties of thin films
- Topological Materials and Phenomena
- Advanced Condensed Matter Physics
- Magnetic and transport properties of perovskites and related materials
- Multiferroics and related materials
- Iron-based superconductors research
- Heusler alloys: electronic and magnetic properties
- Quantum and electron transport phenomena
- Physics of Superconductivity and Magnetism
- Quantum, superfluid, helium dynamics
- Chemical and Physical Properties of Materials
- Metallurgical and Alloy Processes
- Magneto-Optical Properties and Applications
- Superconducting Materials and Applications
- Advanced Mathematical Theories and Applications
- Advanced NMR Techniques and Applications
- Atomic and Subatomic Physics Research
- Geomagnetism and Paleomagnetism Studies
- Magnetic Field Sensors Techniques
- Phase-change materials and chalcogenides
Johannes Gutenberg University Mainz
2022-2024
Giant or tunneling magnetoresistance are physical phenomena used for reading information in commercial spintronic devices. The effects rely on a conserved spin current passing between reference and sensing ferromagnetic electrode multilayer structure. Recently, we have proposed that these fundamental can be realized collinear antiferromagnets with staggered spin-momentum exchange interaction, which generates currents the absence of net equilibrium magnetization. Here elaborate proposal by...
Lifted Kramers spin degeneracy (LKSD) has been among the central topics of condensed-matter physics since dawn band theory solids
Altermagnets are an emerging elementary class of collinear magnets. Unlike ferromagnets, their distinct crystal symmetries inhibit magnetization while, unlike antiferromagnets, they promote strong spin polarization in the band structure. The corresponding unconventional mechanism time-reversal symmetry breaking without electronic spectra has been regarded as a primary signature altermagnetism but not experimentally visualized to date. We directly observe structure altermagnetic RuO 2 by...
Phases with spontaneous time-reversal (
Two-terminal conductance spectroscopy of superconducting devices is a common tool for probing Andreev and Majorana bound states. Here, we study theoretically three-terminal setup, with two normal leads coupled to grounded terminal. Using single-electron scattering matrix, derive the subgap matrix discuss its symmetries. In particular, show that local nonlocal elements have pairwise identical antisymmetric components. Moreover, find are directly related BCS charges states close probes how...
Abstract Investigating the off-diagonal components of conductivity and thermoelectric tensor materials hosting complex antiferromagnetic structures has become a viable method to reveal effects topology chirality on electronic transport in these systems. In this respect, Mn 5 Si 3 is an interesting metallic compound that exhibits several phases below 100 K with different collinear noncollinear arrangements magnetic moments determined from neutron scattering. Previous measurements have shown...
Investigating the off-diagonal components of conductivity and thermoelectric tensor materials hosting complex antiferromagnetic structures has become a viable method to reveal effects topology chirality on electronic transport in these systems. In this respect, Mn$_5$Si$_3$ is an interesting metallic compound that exhibits several phases below 100 K with different collinear noncollinear arrangements Mn magnetic moments. Previous investigations have shown transitions between various give rise...
Altermagnetism represents an emergent collinear magnetic phase with compensated order and unconventional alternating even-parity wave spin in the non-relativistic band structure. We investigate directly this splitting near Fermi energy through spinintegrated soft X-ray angular resolved photoemission spectroscopy. The experimentally obtained angle-dependent intensity, acquired from epitaxial thin films of predicted altermagnet CrSb, demonstrates robust agreement corresponding structure...
Lifted Kramers spin-degeneracy has been among the central topics of condensed-matter physics since dawn band theory solids. It underpins established practical applications as well current frontier research, ranging from magnetic-memory technology to topological quantum matter. Traditionally, lifted considered originate two possible internal symmetry-breaking mechanisms. The first one refers time-reversal symmetry breaking by magnetization ferromagnets, and tends be strong due...
The electronic structure of atoms is organized into even and odd-parity-wave s, p, d, ... orbitals. An analogous classification condensed matter phases emerged with the discovery conventional s-wave superconductivity in mercury, followed by discoveries unconventional p-wave superfluidity $^{3}$He d-wave cuprates. To date, known counterparts magnetism have been ferromagnets spin polarization structure, recently discovered altermagnets[1-3] higher even-parity wave polarization[1,2,4-7]. Here...
The origin and efficiency of charge-to-spin conversion, known as the Edelstein effect (EE), has been typically linked to spin-orbit coupling mechanisms, which require materials with heavy elements within a non-centrosymmetric environment. Here we demonstrate that high spin-charge conversion can be achieved even without in recently identified coplanar p-wave magnets. non-relativistic (NREE) these magnets exhibits distinct phenomenology compared relativistic EE, characterized by strongly...