Topological surface states in dense solid hydrogen

Abstract

It has recently been established that two-dimensional massless graphene-like systems and three-dimensional line-node topological semimetals comprise a special class of centrosymmetric materials where edge/surface states of topological nature inevitably appear in some k-regions. We show that the phases of solid hydrogen produced at megabar pressures can be line-node topological semimetals. In such phases, the material exhibits topological surface states and therefore can be a poor bulk metal but good surface conductor. The results may help to explain discrepant high-pressure experimental data reported for dense hydrogen as well as provide predictions for future measurements, including possible surface superconductivity in hydrogen. Related topological behavior may be expected in high-pressure phases formed in other elements including simple metals.

15 pages, 5 figures

References in corpus (8)

• Universal dynamical conductance in graphite
• Surface Impedance and Bulk Band Geometric Phases in One-Dimensional Systems
• Density functional theory study of phase IV of solid hydrogen
• Dissociation of high-pressure solid molecular hydrogen: Quantum Monte Carlo and anharmonic vibrational study
• Intrinsic conduction through topological surface states of insulating Bi${}_2$Te${}_3$ epitaxial thin films
• Room-Temperature Structures of Solid Hydrogen at High Pressures
• Quantum Monte Carlo Study of High Pressure Solid Molecular Hydrogen
• Fractionally Quantized Berry Phase, Adiabatic Continuation, and Edge States

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• Topological Electride Phase of Sodium at High Pressures and Temperatures
• Topological electronic properties of silicon