# Add the root path of the pygra library import os import sys sys.path.append(os.environ['PYGRAROOT']) # zigzag ribbon from pygra import geometry import numpy as np from pygra import embedding g = geometry.honeycomb_armchair_ribbon(30) h = g.get_hamiltonian(has_spin=False) # get the Hamiltonian,spinless h.add_peierls(.05) # create a new intraterm, vacancy is modeled as a large onsite potential ii = g.get_central() vintra = h.intra.copy() vintra[ii, ii] = 1000.0 eb = embedding.Embedding(h, m=vintra) eb.multildos(nsuper=5, es=np.linspace(-.5, .5, 100))
# Add the root path of the pygra library import os import sys sys.path.append(os.environ['PYGRAROOT']) # zigzag ribbon from pygra import geometry g = geometry.honeycomb_armchair_ribbon(2) # create geometry of a zigzag ribbon g = geometry.chain(2) # create geometry of a zigzag ribbon g.dimensionality = 0 g.write() h = g.get_hamiltonian() from pygra import ldos ldos.multi_ldos(h, projection="atomic")
# Add the root path of the pygra library import os ; import sys ; sys.path.append(os.environ['PYGRAROOT']) # zigzag ribbon from pygra import geometry g = geometry.honeycomb_armchair_ribbon(100) # create geometry of a zigzag ribbon h = g.get_hamiltonian(has_spin=False) # create hamiltonian of the system from pygra import kdos kdos.kdos_bands(h)
