Fysikermøtet 2025 NTNU Trondheim

Session

Parallell A4

18 Jun 2025, 11:00

EL5 (Gamle Elektro)

141. Quantum criticality of altermagnetism

18/06/2025, 11:00

Oral presentation

The term altermagnetism has recently been introduced to describe the Néel order of a class of materials whose magnetic sublattices are neither related by translation nor inversion. These materials have so far mostly been studied using non-interacting electron models. While technically appealing, this approach fails to capture the inherently correlated nature of the magnetic order as well as...

144. Phonon-mediated spin-polarized superconductivity in altermagnets

18/06/2025, 11:15

Oral presentation

We have considered the possibility of phonon-mediated unconventional superconductivity in a recently discovered new class of antiferromagnets, dubbed altermagnets. Within a weak-coupling approach, and using a minimal band model for altermagnets [1], we have found a dominant superconducting instability odd in momentum and even in spin with fully spin-polarized Cooper pair [2]. We discuss the...

146. Antiferromagnetic thin films grown via MBE

18/06/2025, 11:30

Oral presentation

I will present our recent results on the growth of the Kagome metals Mn$_3$Sn and FeSn. We have successfully developed the thin film growth via molecular beam epitaxy for both materials.
Both FeSn and Mn$_3$Sn are antiferromagnets with a non-collinear spin structure arranging in the Kagome lattice. Kagome materials are of particular interest due to their frustrated spin texture and...

149. Magnon and photon blockade magnetic cavities

18/06/2025, 11:45

Oral presentation

Insulating magnets hold great promise for quantum technology due to the long lifetime of magnetic excitations and easy interoperability with other systems. Due to the large number of spins in a magnet, they couple strongly to photons confined in a cavity, making magnetic cavities a useful tool to study the quantum behavior of magnets. Among these is the generation of single magnons or...