Scanning Tunneling Spectra Analysis in Python
Project description
##################### STSPY #########################
Version = 0.1.3
Scanning Tunneling Spectra Python Analysis
Establishes a python class called spectra object with relevant parameters automatically tabulated (and optionally an STM object described below)
In addition, adds a specgrid object which contains similar attributes
To load a spectra from a VERT file, just do: spec = stspy.load_VERT_file(filename) To load a specgrid file, do: specgrid = stspy.load_specgrid_file(filename) #filename is the .specgridfile, dat file is required to be in the same place as the .specgridfile, but isn’t included in the arugment
Spectra (and specgrid) objects have a variety of attributes.
Automatically pulls parameters of particular importance including: ZPiezoconst LockinAmpl
Once called, spectra object contains has the following properties: V: sample voltage (volts) z: (Angstroms) I: current (amps) dIdV: differential conductance (mV)
Methods available: average(hyst_cor = True): if there are multiple passes, averages the spectra back and forth. hyst_cor (default True) applies a correction accounting for differences upon sweeping normalize(kappa): if using a z-ramp, this is useful. Multiplies the current and conductance by exp(-2*kappa*z) where kappa is a provided number (or array same length as z) to be determined by measurement
Another python class is created called STM which has the following properties and default values: DAC_Voltage_Range = 20000.0: Voltage range of the DAC in mV (i.e. 10V - (-10V) = 20V = 20000mV) LockinRC_facotr = 7960.0: Mutliplicative factor to get LockinRC param in Hz
Adjust values of this object to account for different STM or versions of stmafm software
Version log: 0.1.0 - Implemented specgrid reader and changed VERT file load syntax 0.1.1 - Small correction for when hyst factor was odd 0.1.2 - Small correction when loading voltage from specgrid file 0.1.3 - Introduced compatability with STMAFM 4.0 Beta version where repeated spectra are labeled as .BAK files
Project details
Release history Release notifications | RSS feed
Download files
Download the file for your platform. If you're not sure which to choose, learn more about installing packages.
Source Distributions
Built Distribution
Hashes for stspy-0.1.3-py2.py3-none-any.whl
Algorithm | Hash digest | |
---|---|---|
SHA256 | ccdd2f44a096261126fcec93fdf0d9c4eb135393fcacc6c35552859eb8c0b4f6 |
|
MD5 | be9821b88b769f202240a4ab025d541a |
|
BLAKE2b-256 | b5032099fbb11aa544b54090390a18401a19fca203dde6728bec45c50d7bf205 |