v3.2.0

Initial public beta of PySpinW

This is an initial public beta version of PySpinW released on PyPI.

Please install using:

pip install spinw

This will install a module called pyspinw (note the py at the start).

You can then run SpinW with:

import numpy as np
import matplotlib.pyplot as plt
from pyspinw import Matlab
m = Matlab()
swobj = m.spinw()
swobj.genlattice('lat_const', [3, 3, 6], 'angled', [90, 90, 120], 'sym', 'P 1');
swobj.addatom('r', [0, 0, 0], 'S', 1/2, 'label', 'MCu2')
swobj.gencoupling('maxDistance', 5)
swobj.addmatrix('label', 'J1', 'value', 1.00, 'color', 'g')
swobj.addcoupling('mat', 'J1', 'bond', 1)
swobj.genmagstr('mode', 'helical', 'k', [-1/3, -1/3, 0], 'n',[0, 0, 1], 'unit', 'lu', 'S', [[1], [0], [0]])
spec = swobj.spinwave([[-1/2, 0, 0], [0, 0, 0], [1/2, 1/2, 0], 100], 'hermit', False)
spec = m.sw_egrid(spec, 'component', 'Sxx+Syy', 'imagChk', False, 'Evect', np.linspace(0, 3, 100))
ax = plt.imshow(np.real(np.flipud(spec['swConv'])), aspect='auto', vmax=1)
plt.show()

On Windows and Linux systems, as long as you're running PySpinW locally, Matlab plotting commands like m.plot(swobj) will work. This is not the case on MacOS (a known bug) and on remote systems (e.g. via JupyterHub).