Pascal Puphal

collaborators

9 papers

cond-mat.str-el2026

Topochemical Fluorination of La $_{2}$ NiO $_{4 + I^´}$ Single Crystals

Hasan Yilmaz, Masahiko Isobe, Oliver Clemens +1

Topochemical fluorination offers a low--temperature route for modifying the anion chemistry and electronic ground states of layered transition-metal oxides, providing access to met…

cond-mat.str-el2026

Spinon mediation of witness spin dynamics in herbertsmithite

Hiroto Takahashi, Jack Murphy, Mitikorn Wood-Thanan +12

The kagome lattice of spin-1/2 copper atoms in herbertsmithite is conjectured to sustain a quantum spin liquid state with spinon quasiparticles. Ideally, the kagome crystal planes…

cond-mat.supr-con2025

Magnetism of the alternating monolayer-trilayer phase of La $_{3}$ Ni $_{2}$ O $_{7}$

Rustem Khasanov, Thomas J. Hicken, Hubertus Luetkens +9

Understanding the magnetic ground state of Ruddlesden-Popper nickelates is crucial, as these materials exhibit superconductivity under high pressure and host competing electronic o…

cond-mat.str-el2025

Comparative Raman study of Ruddlesden-Popper nickelates and the monolayer-trilayer polymorph

Vignesh Sundaramurthy, Abhi Suthar, Pascal Puphal +12

Ruddlesden-Popper (RP) nickelates have attracted intense interest following the discovery of superconductivity in several members of the series, including bilayer (BL) La $_{3}$ Ni $_{2}$ …

cond-mat.mtrl-sci2025

Terahertz light driven coherent excitation of a zone-folded Raman-active phonon mode in the Spin-Ladder System $I^\pm^{'}$ -NaV $_{2}$ O $_{5}$

Flavio Giorgianni, Martina Romani, Pascal Puphal +5

We investigate the out-of-equilibrium lattice dynamics in the spin-ladder system $I^\pm^{'}$ -NaV $_{2}$ O $_{5}$ using intense terahertz (THz) pump and near-infrared (NIR) probe spectroscopy. W…

cond-mat.str-el2025

Lattice dynamics of the infinite-layer nickelate LaNiO $_{2}$

Shohei Hayashida, Vignesh Sundaramurthy, Wenfeng Wu +8

Infinite-layer (IL) nickelates have rapidly emerged as a new class of superconductors. However, due to the technical challenges of their topotactic synthesis, they have so far been…

Topochemical Fluorination of La2​NiO4+I^´​ Single Crystals

Spinon mediation of witness spin dynamics in herbertsmithite

Magnetism of the alternating monolayer-trilayer phase of La3​Ni2​O7​

Comparative Raman study of Ruddlesden-Popper nickelates and the monolayer-trilayer polymorph

Terahertz light driven coherent excitation of a zone-folded Raman-active phonon mode in the Spin-Ladder System I^±′-NaV2​O5​

Lattice dynamics of the infinite-layer nickelate LaNiO2​

Topochemical Fluorination of La $_{2}$ NiO $_{4 + I^´}$ Single Crystals

Magnetism of the alternating monolayer-trilayer phase of La $_{3}$ Ni $_{2}$ O $_{7}$

Terahertz light driven coherent excitation of a zone-folded Raman-active phonon mode in the Spin-Ladder System $I^\pm^{'}$ -NaV $_{2}$ O $_{5}$

Lattice dynamics of the infinite-layer nickelate LaNiO $_{2}$