Claudia Felser

Jan 3, 2025 | nature.com | Claudia Felser

AbstractHigh thermoelectric performance is generally achieved by synergistically optimizing two or even three of the contradictorily coupled thermoelectric parameters. Here we demonstrate magneto-thermoelectric correlation as a strategy to achieve simultaneous gain in an enhanced Seebeck coefficient and reduced thermal conductivity in topological materials.

Oct 20, 2024 | nature.com | Martin Gutierrez-Amigo |Chunyu Guo |Claudia Felser |Maia G. Vergniory

AbstractThe charge-density wave (CDW) mechanism and resulting structure of the AV3Sb5 family of kagome metals has posed a puzzling challenge since their discovery four years ago. In fact, the lack of consensus on the origin and structure of the CDW hinders the understanding of the emerging phenomena.

Sep 30, 2024 | nature.com | Yun Yen |Jonas A. Krieger |Mengyu Yao |Kaustuv Manna |Emily C. McFarlane |Chandra Shekhar | +6 more

AbstractThe emerging field of orbitronics aims to generate and control orbital angular momentum for information processing. Chiral crystals are promising orbitronic materials because they have been predicted to host monopole-like orbital textures, where the orbital angular momentum aligns isotropically with the electron’s crystal momentum. However, such monopoles have not yet been directly observed in chiral crystals.

Jul 29, 2024 | link.aps.org | Yang Zhang |Claudia Felser

The search for highly efficient and low-cost catalysts based on earth abundant elements is one of the main driving forces in organic and inorganic chemistry. In this work, we introduce the concept of moiré metal for hydrogen evolution reaction (HER). Using twisted NbS2 as an example, we show that the spatially varying interlayer coupling leads to a corresponding variation of Gibbs free energy for hydrogen absorption at different sites on the moiré superlattice.

May 2, 2024 | nature.com | Jonas A. Krieger |Kaustuv Manna |Emily C. McFarlane |Mihir Date |J. Hugo Dil |Chandra Shekhar | +10 more

AbstractSpin-orbit coupling in noncentrosymmetric crystals leads to spin-momentum locking – a directional relationship between an electron’s spin angular momentum and its linear momentum. Isotropic orthogonal Rashba spin-momentum locking has been studied for decades, while its counterpart, isotropic parallel Weyl spin-momentum locking has remained elusive in experiments.