At present there is no consensus as to the nature of the metallic state.

But keeping it in the metallic state can be tricky.

The third step is the reduction of valuable metals to the metallic state.

Above a certain pressure, hydrogen may be converted from a gas into a solid metallic state at room temperature.

In particular we address the question of whether you can have a metallic state in a 2D semiconductor.

The metallic state has historically been an important building block for studying properties of solids.

One of the prime goals of high pressure research, going back to the 1930s, has been to achieve a metallic state in hydrogen.

Early, well-established theoretical works, supported by experimental evidence, predicted that there could be no metallic state in 2D systems.

They are remarkable by converting from semiconducting to metallic state at room temperature upon application of pressure.

This transfer of electrons transforms EuO into the metallic state.

Usually that metallic state was unstable: release the confining pressure and it would revert to a low-density gas.

According to this model, the electrons are in a mixed state both in non-metallic and metallic state.

Unlike metal oxides, metal sulphides cannot be directly reduced to the metallic state.

Some basic materials research relies on projectile impact to create high pressure: such systems are capable of forcing liquid hydrogen into a metallic state.

Native iron in the metallic state occurs rarely as small inclusions in certain basalt rocks.

Under conditions of shocking pressure, hydrogen underwent a transition to a metallic state a little like mercury but thousands of times denser.

But under pressures of about 1 million atmospheres (one megabar), manganese oxide transitions to a metallic state, he said.

The "interesting" phases are in the metallic state which is achieved at finite electron/hole doping of copper-oxide planes.

Smelting or the reduction of an ore to its metallic state is the primary source of experimentation in archaeometallurgy.

Normally a material half the density of salt, it was compressed to a metallic state that exceeded the density of the earth's core.

Each sphere housed a containment field intended to carry antihydrogen, which, frozen to absolute zero, entered a magnetizable metallic state.

Beneath that, the very thought of its existence giving Volyova a faint migraine, was an ocean of hydrogen in its metallic state.

The semimetallic state is similar to the metallic state but in semimetals both holes and electrons contribute to electrical conduction.

Metals, in their metallic state, are bearers of latent levity, which can be set free either through combustion or through corrosion.

But under white light, five times the sun's intensity, the copper stayed in the metallic state and turned 50 percent of the propylene into propylene oxide.