STM simulation using p4vasp
Posted: Mon Jul 11, 2016 3:28 pm
Hi,
When we use p4vasp to simulate a STM image. There are two modes we can choose, constant height and constant current. The idea of constant height is clear, the value we put is the distance from the bottom of the unit cell in Å. But the value for constant current, which is referred to isos density, is not clear. What does the value mean and what is the physical unit of this value? Thank you in advance for reply!
When we use p4vasp to simulate a STM image. There are two modes we can choose, constant height and constant current. The idea of constant height is clear, the value we put is the distance from the bottom of the unit cell in Å. But the value for constant current, which is referred to isos density, is not clear. What does the value mean and what is the physical unit of this value? Thank you in advance for reply!