Contacts{ }

Calling sequence

Contacts{ ... }

Properties

• usage: $\mathrm{optional}\mathrm{within}\mathrm{the}\mathrm{group}$

Functionality

Defines contacts for simulation of devices with open boundary conditions.

Example

Contacts{
    DensityLeft = 1e18
    DensityRight = 1e18

    Broadening = 10.0
    Ballistic = no
}

Note

See the tutorial — DEV — AlGaAs/GaAs resonant tunneling diode for example usage.

The following keywords are available within this group:

---

DensityLeft

Calling sequence

Contacts{ DensityLeft = }

Properties

• type: $\mathrm{real}\mathrm{number}$

• values: [0.0, ...)

• unit: ${\mathrm{cm}}^{-3}$

Functionality

Sets the carrier density in the left contact.

---

DensityRight

Calling sequence

Contacts{ DensityRight = }

Properties

• type: $\mathrm{real}\mathrm{number}$

• values: [0.0, ...)

• unit: ${\mathrm{cm}}^{-3}$

Functionality

Sets the carrier density in the right contact.

---

FermiPinningLeft

Calling sequence

Contacts{ FermiPinningLeft = }

Properties

• type: $\mathrm{real}\mathrm{number}$

• unit: $\mathrm{meV}$

Functionality

Sets the Fermi level in the left contact with respect to the conduction band edge.

---

FermiPinningRight

Calling sequence

Contacts{ FermiPinningRight }

Properties

• type: $\mathrm{real}\mathrm{number}$

• unit: $\mathrm{meV}$

Functionality

Sets the Fermi level in the right contact with respect to the conduction band edge.

---

MaterialLeft

Calling sequence

Contacts{ MaterialLeft }

Properties

• type: $\mathrm{character}\mathrm{string}$

Functionality

Specifies the material of the left contact by Material{ Alias }.

---

MaterialRight

Calling sequence

Contacts{ MaterialRight }

Properties

• type: $\mathrm{character}\mathrm{string}$

Functionality

Specifies the material of the left contact by Material{ Alias }.

---

Broadening

Calling sequence

Contacts{ Broadening }

Properties

• type: $\mathrm{real}\mathrm{number}$

• values: [0.0, ...)

• unit: $\mathrm{meV}$

Functionality

Sets a phenomenological broadening of the density of states in the contacts.

---

Ballistic

Calling sequence

Contacts{ Ballistic }

Properties

• choices: yes; no

• default: no

Functionality

If yes, calculate ballistic transport between the contacts (i.e., neglect scattering processes in the device).

---

Last update: 19/11/2024