Dynamical Approach to Realize Room-Temperature Superconductivity in LaH${}_{10}$

Abstract

Metallic hydrogen and hydride materials stand as promising avenues to achieve room-temperature superconductivity. Characterized by their high phonon frequencies and moderate coupling strengths, several high-pressure hydrides were theoretically predicted to exhibit transition temperatures ($T_c$) exceeding 250\,K, a claim further substantiated by experimental evidence. In an effort to push $T_c$ beyond room temperature, we introduce a dynamical method that involves stimulating hydrides with mid-infrared lasers. Employing Floquet first-principles simulations, we observe that in a nonequilibrium state induced by light, both the electronic density of states and the coupling to high-energy phonons see notable enhancements. These simultaneous improvements collectively result in an estimated 20\%-30\% rise in $T_c$ in practical pump conditions. Our theoretical investigation, therefore, offers a novel strategy to potentially raise the $T_c$ of hydrides above room temperature.

11 pages, 6 figures

References in corpus (48)

• Advanced capabilities for materials modelling with Quantum ESPRESSO
• Optimized norm-conserving Vanderbilt pseudopotentials
• Conventional superconductivity at 203 K at high pressures
• Time-dependent transport in interacting and non-interacting mesoscopic systems
• Wannier90 as a community code: new features and applications
• Superconductivity at 250 K in lanthanum hydride under high pressures
• Evidence for superconductivity above 260 K in lanthanum superhydride at megabar pressures
• Photovoltaic Hall effect in graphene
• Observation of Floquet-Bloch states on the surface of a topological insulator
• Superconductive "sodalite"-like clathrate calcium hydride at high pressures
• Light-induced anomalous Hall effect in graphene
• An optically stimulated superconducting-like phase in K3C60 far above equilibrium Tc
• Driven quantum transport on the nanoscale
• The metallization and superconductivity of dense hydrogen sulfide
• Observation of the Wigner-Huntington Transition to Solid Metallic Hydrogen
• A Perspective on Conventional High-Temperature Superconductors at High Pressure: Methods and Materials
• Nonlinear lattice dynamics as a basis for enhanced superconductivity in YBa2Cu3O6.5
• Nonthermal pathways to ultrafast control in quantum materials
• Floquet scattering theory of quantum pumps
• Optically enhanced coherent transport in YBa2Cu3O6.5 by ultrafast redistribution of interlayer coupling
• Selective scattering between Floquet-Bloch and Volkov states in a topological insulator
• Quantum Crystal Structure in the 250 K Superconducting Lanthanum Hydride
• Pseudospin-selective Floquet band engineering in black phosphorus
• Transient superconductivity from electronic squeezing of optically pumped phonons
• Evidence for metastable photo-induced superconductivity in K${}_3$C${}_{60}$
• Dynamical Cooper pairing in non-equilibrium electron-phonon systems
• Theory of light-enhanced phonon-mediated superconductivity
• Hydrogen "penta-graphene-like" structure stabilized by hafnium: a high-temperature conventional superconductor
• Nonequilibrium steady states and transient dynamics of conventional superconductors under phonon driving
• The theory of parametrically amplified electron-phonon superconductivity
• High-Temperature Superconductivity in Th-H System at Pressure Conditions
• Optically induced superconductivity in striped La2-xBaxCuO4 by polarization-selective excitation in the near infrared
• Actinium hydrides $Ac{H}_{10}$, $Ac{H}_{12}$, $Ac{H}_{16}$ as high-temperature conventional superconductors
• Buildup and dephasing of Floquet-Bloch bands on subcycle time scales
• Giant modulation of optical nonlinearity by Floquet engineering
• Breakdown of Migdal-Eliashberg theory; a determinant quantum Monte Carlo study
• Pressure tuning of light-induced superconductivity in K3C60
• Proposed parametric cooling of bilayer cuprate superconductors by terahertz excitation
• How Compressed Hydrides Produce Room Temperature Superconductivity
• Cooling quasiparticles in A${}_3$C${}_{60}$ fullerides by excitonic mid-infrared absorption
• Nonequilibrium enhancement of high-temperature superconductivity in a 3D model of cuprates
• A bound on superconducting $T_c$'s
• Light induced enhancement of superconductivity via melting of competing bond-density wave order in underdoped cuprates
• Parametric resonance of Josephson plasma waves: A theory for optically amplified interlayer superconductivity in YBa${}_2$Cu${}_3$O${}_{6+x}$
• Pressure dependence of the superconducting transition temperature of compressed LaH${}_{10}$
• Light-induced d-wave superconductivity through Floquet-engineered Fermi surfaces in cuprates
• Fluctuating Nature of Light-Enhanced $d$-Wave Superconductivity: A Time-Dependent Variational Non-Gaussian Exact Diagonalization Study
• Diffusion Driven Transient Hydrogenation in Metal Superhydrides at Extreme Conditions