3.3.3.95. NXsts

Status:

application definition (contribution), extends NXspm

Description:

An application definition to describe Scanning Tunneling Spectroscopy (STS). …

An application definition to describe Scanning Tunneling Spectroscopy (STS).

NXsts is an extension of NXspm.

Symbols:

No symbol table

Groups cited:

NXcollection, NXentry, NXenvironment, NXinstrument, NXlockin, NXpid_controller, NXsensor, NXspm_bias_spectroscopy, NXspm_positioner, NXspm_scan_control

Structure:

ENTRY: (required) NXentry ⤆

definition: (required) NX_CHAR ⤆

Name of the definition that is used for the application. …

Name of the definition that is used for the application.

Obligatory value: NXsts

experiment_technique: (required) NX_CHAR ⤆

The specific to STM experiment. …

The specific to STM experiment.

Obligatory value: STS

scan_mode: (required) NX_CHAR ⤆

The mode between the tip and sample of the tunneling spectroscopy experiment …

The mode between the tip and sample of the tunneling spectroscopy experiment.

Any of these values or a custom value (if you use a custom value, also set @custom=True):

  • constant height

  • constant current

  • constant spacing

INSTRUMENT: (required) NXinstrument ⤆

lockin_amplifier: (recommended) NXlockin ⤆

The lock-in amplifier information.

current_sensorTAG: (recommended) NXsensor ⤆

Information for current sensor.

SCAN_ENVIRONMENT: (optional) NXenvironment ⤆

SPM_SCAN_CONTROL: (recommended) NXspm_scan_control ⤆

bias_spectroscopy_environment: (required) NXenvironment ⤆

To explain bias (sweep measurement) voltage applied to the sample.

SPM_BIAS_SPECTROSCOPY: (required) NXspm_bias_spectroscopy ⤆

Setup and scan data for continuous measurement of bias-voltage on the su …

Setup and scan data for continuous measurement of bias-voltage on the subject of experiment vs tunneling current from probe.

SPM_POSITIONER: (recommended) NXspm_positioner ⤆

z_controller: (recommended) NXpid_controller ⤆

reproducibility_indicators: (optional) NXcollection ⤆

The group’s concepts hold the link to the related concepts that define the …

The group’s concepts hold the link to the related concepts that define the reproducibility of the STM experiment.

current: (optional) NX_NUMBER

The tunneling current between tip and sample after application of bias vol …

The tunneling current between tip and sample after application of bias voltage. This should be a link to /ENTRY[*]/INSTRUMENT[*]/current_sensorTAG/current

Note: group name (could be any meaningful and relevant name e.g. entry in ENTRY[entry]) inside the square bracket would be the exact name of the NXentry group.

current_offset: (optional) NX_NUMBER

The offset in tunneling current between tip and sample after application o …

The offset in tunneling current between tip and sample after application of bias voltage. This should be a link to /ENTRY[*]/INSTRUMENT[*]/current_sensorTAG[current_sensor*]/current_offset

Note: group name (could be any meaningful and relevant name e.g. entry in ENTRY[entry]) inside the square bracket would be the exact name of the NXentry group.

current_gain: (optional) NX_NUMBER

Proportional relationship between the probe output voltage and the actual …

Proportional relationship between the probe output voltage and the actual tunneling current when measuring the tunneling current. This should be a link to /ENTRY[*]/INSTRUMENT[*]/current_sensorTAG[current_sensor*]/amplifier/current_gain

Note: group name (could be any meaningful and relevant name e.g. entry in ENTRY[entry]) inside the square bracket would be the exact name of the NXentry group.

BIAS_SWEEP: (optional) NXspm_scan_control

Bias sweep measurement in bias spectroscopy. …

Bias sweep measurement in bias spectroscopy. This should be a link to /ENTRY[*]/INSTRUMENT[*]/bias_spectroscopy_environment/BIAS_SPECTROSCOPY[bias_spectroscopy]/bias_sweep

Note: group name (could be any meaningful and relevant name e.g. entry in ENTRY[entry]) inside the square bracket would be the exact name of the NXentry group.

modulation_signal_type: (optional) NX_CHAR ⤆

This is the signal on which the modulation voltage or current will be adde …

This is the signal on which the modulation voltage or current will be added. This should be a link to /ENTRY[*]/INSTRUMENT[*]/lockin_amplifier/modulation_signal_type

Note: group name (could be any meaningful and relevant name e.g. entry in ENTRY[entry]) inside the square bracket would be the exact name of the NXentry group.

reference_frequency: (optional) NX_NUMBER

The frequency of the sine modulation that is used as carrier signal of inp …

The frequency of the sine modulation that is used as carrier signal of input signal in lock-in. This should be a link to /ENTRY[*]/INSTRUMENT[*]/lockin_amplifier/reference_frequency

Note: group name (could be any meaningful and relevant name e.g. entry in ENTRY[entry]) inside the square bracket would be the exact name of the NXentry group.

resolution_indicators: (optional) NXcollection ⤆

The group’s concepts hold the link to the related concepts that define the …

The group’s concepts hold the link to the related concepts that define the resolution of the STM experiment.

head_temperature: (optional) NX_NUMBER

This should be a link to …

This should be a link to /entry/instrument/scan_environment/head_temperature

Note: group name (could be any meaningful and relevant name e.g. entry in ENTRY[entry]) inside the square bracket would be the exact name of the NXentry group.

cryo_bottom_temperature: (optional) NX_NUMBER

This should be a link to …

This should be a link to /entry/instrument/scan_environment/cryo_bottom_temperature

Note: group name (could be any meaningful and relevant name e.g. entry in ENTRY[entry]) inside the square bracket would be the exact name of the NXentry group.

cryo_shield_temperature: (optional) NX_NUMBER

This should be a link to …

This should be a link to /entry/instrument/scan_environment/cryo_shield_temperature

Note: group name (could be any meaningful and relevant name e.g. entry in ENTRY[entry]) inside the square bracket would be the exact name of the NXentry group.

BIAS_SWEEP: (optional) NXspm_scan_control

This should be a link to …

This should be a link to /ENTRY[*]/INSTRUMENT[*]/bias_spectroscopy_environment/SPM_BIAS_SPECTROSCOPY[bias_spectroscopy]/bias_sweep

Note: group name (could be any meaningful and relevant name e.g. entry in ENTRY[entry]) inside the square bracket would be the exact name of the NXentry group.

modulation_signal_type: (optional) NX_CHAR ⤆

This is the signal on which the modulation voltage or current will be adde …

This is the signal on which the modulation voltage or current will be added. This should be a link to /ENTRY[*]/INSTRUMENT[*]/lockin_amplifier/modulation_signal_type

Note: group name (could be any meaningful and relevant name e.g. entry in ENTRY[entry]) inside the square bracket would be the exact name of the NXentry group.

modulation_frequency: (optional) NX_NUMBER

The frequency of the sine modulation that is used to modulate the signal i …

The frequency of the sine modulation that is used to modulate the signal in lock-in. This should be a link to /ENTRY[*]/INSTRUMENT[*]/lockin_amplifier/modulation_frequency

Note: group name (could be any meaningful and relevant name e.g. entry in ENTRY[entry]) inside the

Hypertext Anchors

List of hypertext anchors for all groups, fields, attributes, links, and symbols defined in this class.

NXDL Source:

https://github.com/nexusformat/definitions/blob/main/contributed_definitions/NXsts.nxdl.xml