Which mechanism permits current flow in a tunnel diode under reverse bias conditions?

💡 Explanation

Under reverse bias, quantum tunneling occurs because electrons tunnel directly through the narrow potential barrier due to high doping, resulting in current flow. Therefore quantum tunneling permits the flow, rather than zener breakdown, avalanche multiplication, or thermionic emission which require different voltage or temperature conditions.

• Which outcome results when the isothermal expansion stage during a closed Brayton cycle reaches the material yield strength?
• Which mechanism causes increased electron emission rates in high-field scanning tunneling microscopy?
• When a molecule undergoes significant thermal agitation within a mass spectrometer, which outcome regarding electron orbitals results?
• Which risk increases when a cryogenic pump cools liquid helium below its lambda point?
• Which mechanism dictates increased metallic conductance when temperature decreases?
• Which outcome occurs when inhibitors reduce enzyme concentration available during a reaction involving Michaelis-Menten kinetics?