2.3.3.3.164. NXstm

Status:

application definition (contribution), extends NXspm

Description:

An application definition to describe Scanning Tunneling Microscopy (STM).

Symbols:

No symbol table

Groups cited:

NXamplifier, NXbias_spectroscopy, NXcalibration, NXcollection, NXentry, NXenvironment, NXinstrument, NXlockin, NXpid_controller, NXpiezo_config_spm, NXpositioner_spm, NXscan_control, NXsensor

Structure:

ENTRY: (required) NXentry ⤆

definition: (required) NX_CHAR ⤆

Name of the definition that is used for the STM technique. ...

Name of the definition that is used for the STM technique.

Obligatory value: NXstm

scan_mode: (required) NX_CHAR ⤆

The mode of the scan that is performed. Two commonly used modes are constan ...

The mode of the scan that is performed. Two commonly used modes are constant height mode and constant current mode.

Any of these values: constant height | constant current

INSTRUMENT: (required) NXinstrument ⤆

The group explains the instrumentation of the STM experiment such ...

The group explains the instrumentation of the STM experiment such as current sensor, lock-in amplifier etc.

lockin_amplifier: (required) NXlockin ⤆

The lock-in amplifier information. The device is being used to extract ...

The lock-in amplifier information. The device is being used to extract the very weak signal buried in noisy signals.

modulation_signal_type: (optional) NX_CHAR {units=NX_UNITLESS}

The type of the signal (voltage or current) subject fo modulation.

modulation_frequency: (optional) NX_NUMBER

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

The frequency of the sine modulation that is used to modulate the signal in lock-in.

scan_environment: (required) NXenvironment ⤆

The environment information for stm or sts experiment.

SCAN_CONTROL: (required) NXscan_control ⤆

The scan control information like scan region or phase space, e.g. patte ...

The scan control information like scan region or phase space, e.g. pattern of scan (e.g. mesh, spiral, etc.), scanner speed, etc.

scan_type: (required) NX_CHAR ⤆

The type of scan like mesh, spiral, etc. ...

The type of scan like mesh, spiral, etc.

Any of these values: mesh | trajectory | snake | spiral

tip_temp_sensor: (optional) NXsensor ⤆

This group stands for the same concept as ...

This group stands for the same concept as /ENTRY[entry]/INSTRUMENT[instrument]/tip_temp_sensor

Note: The group name written inside the square brackets (e.g. entry in ENTRY[entry]) would be the exact instance name of the base class (e.g. NXentry) in the nexus file.

cryo_temp_sensor: (optional) NXsensor ⤆

This group stands for the same concept as ...

This group stands for the same concept as /ENTRY[entry]/INSTRUMENT[instrument]/cryo_temp_sensor

Note: The group name written inside the square brackets (e.g. entry in ENTRY[entry]) would be the exact instance name of the base class (e.g. NXentry) in the nexus file.

cryo_shield_temp_sensor: (optional) NXsensor ⤆

This group stands for the same concept as ...

This group stands for the same concept as /ENTRY[entry]/INSTRUMENT[instrument]/cryo_shield_temp_sensor

Note: The group name written inside the square brackets (e.g. entry in ENTRY[entry]) would be the exact instance name of the base class (e.g. NXentry) in the nexus file.

tip_temp_sensor: (optional) NXsensor ⤆

The temperature of the tip one of the tip.

cryo_temp_sensor: (optional) NXsensor ⤆

The temperature of the cryostat.

cryo_shield_temp_sensor: (optional) NXsensor ⤆

The temperature of the cryo shield.

current_sensor: (required) NXsensor ⤆

Current sensor for current between tip and sample.

current: (required) NX_NUMBER {units=NX_CURRENT} ⤆

The tunneling current between tip and sample after ...

The tunneling current between tip and sample after applying bias voltage.

current_offset: (optional) NX_NUMBER {units=NX_CURRENT} ⤆

Offset value of the current measurement.

current_calibration: (optional) NXcalibration ⤆

Calibration of the current measurement.

coefficients: (required) NX_NUMBER {units=NX_ANY} ⤆

The coefficients of the calibration.

AMPLIFIER: (optional) NXamplifier ⤆

An amplifier information for the input signal (e.g. from tip).

current_gain: (required) NX_NUMBER {units=NX_UNITLESS} ⤆

Proportional relationship between the probe output voltage and the act ...

Proportional relationship between the probe output voltage and the actual tunneling current when measuring the tunneling current.

bias_spectroscopy_environment: (optional) NXenvironment ⤆

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

BIAS_SPECTROSCOPY: (optional) NXbias_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.

piezo_sensor: (required) NXsensor ⤆

The sensor information for the piezo device.

piezo_configuration: (optional) NXpiezo_config_spm ⤆

The piezo configuration information like piezoelectric device calibratio ...

The piezo configuration information like piezoelectric device calibration and material properties.

POSITIONER_SPM: (required) NXpositioner_spm ⤆

The positioner information like the position of the tip, ...

The positioner information like the position of the tip, PID loop feedback etc.

z_controller: (required) NXpid_controller ⤆

The PID controller information for the z-axis.

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. link to the target: /ENTRY[entry]/INSTRUMENT[instrument]/current_sensor/current

Note: The group name written inside the square brackets (e.g. entry in ENTRY[entry]) would be the exact instance name of the base class (e.g. NXentry) in the nexus file.

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. link to the target: /ENTRY[entry]/INSTRUMENT[instrument]/current_sensor/current_offset

Note: The group name written inside the square brackets (e.g. entry in ENTRY[entry]) would be the exact instance name of the base class (e.g. NXentry) in the nexus file.

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. link to the target: /ENTRY[entry]/INSTRUMENT[instrument]/current_sensor/AMPLIFIER[amplifier]/current_gain

Note: The group name written inside the square brackets (e.g. entry in ENTRY[entry]) would be the exact instance name of the base class (e.g. NXentry) in the nexus file.

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. link to the target: /ENTRY[entry]/INSTRUMENT[instrument]/lockin_amplifier/modulation_signal

Note: The group name written inside the square brackets (e.g. entry in ENTRY[entry]) would be the exact instance name of the base class (e.g. NXentry) in the nexus file.

reference_frequency: (optional) NX_NUMBER

The frequency of the sine modulation that is used as a carrier signal of i ...

The frequency of the sine modulation that is used as a carrier signal of input signal in lock-in.

link to the target: /ENTRY[entry]/INSTRUMENT[instrument]/lockin_amplifier/reference_frequency

Note: The group name written inside the square brackets (e.g. entry in ENTRY[entry]) would be the exact instance name of the base class (e.g. NXentry) in the nexus file.

bias_sweep: (optional) NXscan_control

Bias sweep measurement in bias spectroscopy. ...

Bias sweep measurement in bias spectroscopy. Link to target: /ENTRY[entry]/INSTRUMENT[instrument]/bias_spectroscopy_environment/BIAS_SPECTROSCOPY[bias_spectroscopy]/bias_sweep

Note: The group name written inside the square brackets (e.g. entry in ENTRY[entry]) would be the exact instance name of the base class (e.g. NXentry) in the nexus file.

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.

stm_head_temp: (optional) NX_NUMBER

Link to target: /ENTRY[entry]/INSTRUMENT[instrument]/scan_environment/tip_temp

cryo_bottom_temp: (optional) NX_NUMBER

Link to target: ...

Link to target: /ENTRY[entry]/INSTRUMENT[instrument]/scan_environment/cryo_bottom_temp

cryo_shield_temp: (optional) NX_NUMBER

Link to target: ...

Link to target: /ENTRY[entry]/INSTRUMENT[instrument]/scan_environment/cryo_shield_temp

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. link to the target: /ENTRY[entry]/INSTRUMENT[instrument]/lockin_amplifier/modulation_signal_type modulation_signal_type

reference_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. link to the target: /ENTRY[entry]/INSTRUMENT[instrument]/lockin_amplifier/modulation_frequency

bias_sweep: (optional) NXscan_control

Link to target: ...

Link to target: /ENTRY[entry]/INSTRUMENT[instrument]/bias_spectroscopy_environment/BIAS_SPECTROSCOPY[bias_spectroscopy]/bias_sweep

Hypertext Anchors

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

NXDL Source:

https://github.com/FAIRmat-NFDI/nexus_definitions/tree/fairmat/contributed_definitions/NXstm.nxdl.xml