Q. Meier

activity

20242026

collaborators

9 papers

cond-mat.supr-con2026

Structural stability, electronic structure, and magnetism of the $d^{9}$ double infinite-layer La $_{3}$ Ni $_{2}$ O $_{5}$ F under chemical pressure and epitaxial strain

K. Madani, Q. N. Meier, A. Cano

Nickelate materials exhibit rich electronic properties that can be engineered toward cuprate-like regimes through topotactic and mixed-anion chemistry. Using first-principles calcu…

cond-mat.str-el2026

Phonon dynamics in Chromium under pressure: absence of phonon criticality at the approach of the quantum critical point

P. RodiÃ¨re, P. Rodière, J. E. Lorenzo +3

Fermi surface nesting is key to understanding the origin of the itinerant antiferromagnetic spin density wave in chromium. This magnetic order is accompanied by a charge-density wa…

physics.optics2025

Coherent phonon control beyond amplitude saturation in a sliding ferroelectric

Jan Gerrit Horstmann, Christoph Emeis, Andrin Caviezel +5

The breakdown of Hooke's law marks the onset of nonlinear behaviour: when displacements become large, restoring forces weaken and conventional proportionality fails. In quantum mat…

cond-mat.mtrl-sci2025

(Anti-)Altermagnetism from Orbital Ordering in the Ruddlesden-Popper Chromates Sr $_{n + 1}$ Cr $_{n}$ O $_{3 n + 1}$

Quintin N. Meier, Alberto Carta, Claude Ederer +1

Altermagnets are collinear antiferromagnets with spin-split electronic states. We introduce Ruddlesden-Popper chromates Sr $_{n + 1}$ Cr $_{n}$ O $_{3 n + 1}$ (including SrCrO $_{3}$ ) as candidat…

cond-mat.supr-con2025

Pressure and doping effects on the electronic structure and magnetism of the single-layer nickelate La $_{2}$ NiO $_{4}$

J. B. de Vaulx, F. Bernardini, V. Olevano +2

La $_{2}$ NiO $_{4}$ is a prototypical member of the Ruddlesden-Popper nickelate series that offers a valuable reference point for elucidating the key ingredients behind the intriguing pr…

cond-mat.supr-con2025

Pressure and strain effects on the $ab initio$ $G W$ electronic structure of La $_{3}$ Ni $_{2}$ O $_{7}$

Jean-Baptiste de Vaulx, Quintin N. Meier, Pierre Toulemonde +2

The recent discovery of superconductivity in La $_{3}$ Ni $_{2}$ O $_{7}$ at a critical temperature above 80~K points to a non-conventional pairing mechanism in nickelates as in cuprates, pos…

Structural stability, electronic structure, and magnetism of the d9 double infinite-layer La3​Ni2​O5​F under chemical pressure and epitaxial strain

Phonon dynamics in Chromium under pressure: absence of phonon criticality at the approach of the quantum critical point

Coherent phonon control beyond amplitude saturation in a sliding ferroelectric

(Anti-)Altermagnetism from Orbital Ordering in the Ruddlesden-Popper Chromates Srn+1​Crn​O3n+1​

Pressure and doping effects on the electronic structure and magnetism of the single-layer nickelate La2​NiO4​

Pressure and strain effects on the ab initio GW electronic structure of La3​Ni2​O7​

Structural stability, electronic structure, and magnetism of the $d^{9}$ double infinite-layer La $_{3}$ Ni $_{2}$ O $_{5}$ F under chemical pressure and epitaxial strain

(Anti-)Altermagnetism from Orbital Ordering in the Ruddlesden-Popper Chromates Sr $_{n + 1}$ Cr $_{n}$ O $_{3 n + 1}$

Pressure and doping effects on the electronic structure and magnetism of the single-layer nickelate La $_{2}$ NiO $_{4}$

Pressure and strain effects on the $ab initio$ $G W$ electronic structure of La $_{3}$ Ni $_{2}$ O $_{7}$