chips infrastructure
The Topological Edge Also Responded to Strain
First-principles calculations predict PbGeH and PbSnH monolayers that combine room-temperature-scale bandgaps with piezoelectricity.
Summary
First-principles calculations predict PbGeH and PbSnH monolayers that combine room-temperature-scale bandgaps with piezoelectricity.
Calculations predict quantum-spin-Hall gaps up to 0.314 electron volts and in-plane piezoelectric coefficients of 6.676 and 5.370 picometers per volt for two hydrogenated lead monolayers. A Janus variant also produced an out-of-plane response and a large modeled Rashba parameter while retaining edge states under plus or minus six percent strain. These are theoretical materials predictions, not fabricated devices.
Why it matters
First-principles calculations predict PbGeH and PbSnH monolayers that combine room-temperature-scale bandgaps with piezoelectricity.
Limits and context
- These are theoretical materials predictions, not fabricated devices.
Key claims
First-principles calculations predict PbGeH and PbSnH monolayers that combine room-temperature-scale bandgaps with piezoelectricity.
Qualification: These are theoretical materials predictions, not fabricated devices.
Evidence: source-2026-08-03-014
Sources
- 2D Materials: piezoelectric topological PbXH monolayersIOP Publishing · secondary reporting
Corrections
No corrections have been recorded for this story.