14 papers
Magnetically tunable symmetry-enforced nodal lines producing huge anomalous Hall conductivity in altermagnetic -MnTe
Mathews Benny, Xujia Gong, Amar Fakhredine +21
Altermagnetic -MnTe exhibits huge anomalous Hall conductivity (AHC) up to room-temperature together with weak ferromagnetism arising from spin and orbital polarizations. We clar…
Robust Signatures of Fragile Topology
Viktor Könye, Ihor Nimyi, Oleg Janson +3
Some topological phases of matter are called fragile. They do not generically host protected gapless boundary states and they can be trivialized by adding additional valence bands.…
Phonon-driven nodal surface superconductivity of Fermi arcs
Francesco Buccheri, Alessandro de Martino, Jeroen van den Brink
According to recent observations, the topological surface states of Weyl semimetals may develop a superconducting gap, while bulk superconductivity remains absent. What drives the…
Fermi energy Weyl nodes in Te (=Ta, Nb, =Ir, Rh)
Shivam Parasar, Jeroen van den Brink, Rajyavardhan Ray
Key aspects of the quantum oscillations and magnetoresistance in Weyl semimetals Te (=Nb,Ta, =Rh, Ir) persist as open questions, obscuring the link between their topo…
Sign control of photocurrents by spin-group-symmetry breaking in altermagnetic insulators
Gastón Blatter, Xiao Zhang, Jeroen van den Brink +2
Controlling physical responses through symmetry breaking is a central paradigm in quantum materials, enabling novel functionalities. Here we determine the effects of spin-group-sym…
Fermi surface and topology of multiband superconductor BeAu
Riccardo Vocaturo, Klaus Koepernik, Dániel Varjas +3
The chiral material BeAu was recently identified as a multiband type-I superconductor with a critical temperature of 3.2 K. As a member of the B20 crystal family (space group $P2_1…