Devices specification

Daniel Mejia, Nemo5 Team

NanowireStandard

NanowireStandard / Nanowire with an optional gate

Chanel length

NanowireStandard options [1]

option default description

material_name Material type

cross_section (1,1) Cross section dimensions (nm)

channel_length Channel length (device units)

drain_length disabled Drain length (device units)

drain_contacts 1 Number of drain contacts

drain_floating_contacts 0 Number of drain contacts not connected

drain_dimension 2 # Unit cells required for each contact

source_length disabled Source length (Device units)

source_contacts 1 Number of source contacts

source_floating_contacts 0 Number of source contacts not connected

source_dimension 2 # Unit cells required for each contact

length_units nm Device Units (nm,um,A,ucell)

NanowireStandard options [2]

option default description

drain_name drain Drain Domain Name

source_name source Source Domain Name

drain_prefix _contact Drain contact prefix

source_prefix _contact Source contact prefix

source_floating_prefix _mode Source contact prefix

drain_floating_prefix _mode Drain contact prefix

smart_device_generator true creates only entities defined in the input deck

passivation_enabled true Enable passivation for domains

channel:properties(s) Define a customized material for channel.

source:properties(s) Define a customized material for source.

drain:properties(s) Define a customized material for drain.

oxide:properties(s) Define a customized material for gate.

NanowireStandard options [3]

crystal_direction1 (1,0,0) Crystal direction axis

crystal_direction2 (0,1,0) Crystal direction axis

crystal_direction3 (0,0,1) Crystal direction axis

space_orientation_dir1 (1,0,0) Spatial orientation axis

space_orientation_dir2 (0,1,0) Spatial orientation axis

lattice_constant 0.54 / DB Lattice constant

initial_position (0,0,0) Starting point

initial_unitcell (0,0,0) Shift unit cells

fem_refinement_steps 0 Number of refinements in fem_domains

A problem is know when crystal directions are not completely orthogonal, TODO.

NanowireStandard Components Access

Domain keyword

Channel Device:Domain:channel

source_contact Device:Domain:source_contact

source[_source]*_contact Device:Domain:source[_source]*_contact

drain_contact Device:Domain:drain_contact

drain[_drain]*_contact Device:Domain:drain[_drain]*_contact

Region keyword

name_region Device:Region:name_region

ActiveRegion keyword

channel Device:ActiveRegion:channel

leads Device:ActiveRegion:leads

Example device_wire_meta5.in

NanowireStandard_em

View NanowireStandard_em / customized wire for effective mass calculations

smart_device_generator = falseenable_passivation = false

Keyword oxide is replaced by gateKeyword channel is replaced by device

Chanel length

NanowireStandard_tb

View NanowireStandard_tb / customized wire for tight binding calculations

smart_device_generator = falseenable_passivation = true

Keyword oxide is replaced by gateKeyword channel is replaced by device

Chanel length

UTBStandard

UTBStandard / UTBwith an optional gate

It is under testing/development

Chanel length

UTBStandard options [1]

option default description

material_name Material type

confinement_length 0 Cross section dimensions (nm)

channel_length Channel length (device units)

drain_length disabled Drain length (device units)

drain_contacts 0 Number of drain contacts

drain_floating_contacts 0 Number of drain contacts not connected

drain_dimension 1 # Unit cells required for each contact

source_length disabled Source length (Device units)

source_contacts 0 Number of source contacts

source_floating_contacts 0 Number of source contacts not connected

source_dimension 1 # Unit cells required for each contact

length_units nm Device Units (nm,um,A,ucell)

UTBStandard options [2]

option default description

drain_name drain Drain Domain Name

source_name source Source Domain Name

drain_prefix _contact Drain contact prefix

source_prefix _contact Source contact prefix

source_floating_prefix _mode Source contact prefix

drain_floating_prefix _mode Drain contact prefix

smart_device_generator true creates only entities defined in the input deck

passivation_enabled true Enable passivation for domains

channel:properties(s) Define a customized material for channel.

source:properties(s) Define a customized material for source.

drain:properties(s) Define a customized material for drain.

oxide:properties(s) Define a customized material for gate.

UTBStandard options [3]

crystal_direction1 (1,0,0) Crystal direction axis

crystal_direction2 (0,1,0) Crystal direction axis

crystal_direction3 (0,0,1) Crystal direction axis

space_orientation_dir1 (1,0,0) Spatial orientation axis

space_orientation_dir2 (0,1,0) Spatial orientation axis

lattice_constant 0.54 / DB Lattice constant

initial_position (0,0,0) Starting point

initial_unitcell (0,0,0) Shift unit cells

fem_refinement_steps 0 Number of refinements in fem_domains

UTBStandard Components Access

Domain keyword

Channel Device:Domain:channel

source_contact Device:Domain:source_contact

source[_source]*_contact Device:Domain:source[_source]*_contact

drain_contact Device:Domain:drain_contact

drain[_drain]*_contact Device:Domain:drain[_drain]*_contact

Region keyword

name_region Device:Region:name_region

ActiveRegion keyword

channel Device:ActiveRegion:channel

leads Device:ActiveRegion:leads

Example device_utb_meta5.in