Electric field driven insulator-to-metal phase transitions

Details Electric field driven insulator-to-metal phase transitions Electric field driven insulator-to-metal phase transitions

2011-11-29

arxiv.org/abs/1111.6674v1

Physics

Condensed Matter

Materials Science

4 pages, 3 figures

Scientific paper

We show that strong enough electric fields can trigger nucleation of needle-shaped metallic embryos in insulators, even when the metal phase is energetically unfavorable without the field. This general phenomenon is due to the gigantic induced dipole moments acquired by the embryos which cause sufficient electrostatic energy gain. Nucleation kinetics are exponentially accelerated by the field-induced suppression of nucleation barriers. Our theory opens the venue of field driven material synthesis. In particular, we briefly discuss synthesis of metallic hydrogen at standard pressure.

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