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version 0.0.54

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guanjihuan
2022-01-20 14:31:13 +08:00
parent a8210356a3
commit 3d90033b4d
3 changed files with 18 additions and 2 deletions
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16
PyPI/src/guan/__init__.py
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@@ -941,7 +941,7 @@ def calculate_conductance_with_scattering_length_array(fermi_energy, h00, h01, l
## multi-terminal transmission
def calculate_six_terminal_transmission_matrix(fermi_energy, h00_for_lead_4, h01_for_lead_4, h00_for_lead_2, h01_for_lead_2, center_hamiltonian, width=10, length=50, internal_degree=1, moving_step_of_leads=10):
def get_gamma_array_and_green_for_six_terminal_transmission(fermi_energy, h00_for_lead_4, h01_for_lead_4, h00_for_lead_2, h01_for_lead_2, center_hamiltonian, width=10, length=50, internal_degree=1, moving_step_of_leads=10):
# ---------------- Geometry ----------------
# lead2 lead3
# lead1(L) lead4(R)
@@ -987,6 +987,10 @@ def calculate_six_terminal_transmission_matrix(fermi_energy, h00_for_lead_4, h01
gamma_array = [gamma1, gamma2, gamma3, gamma4, gamma5, gamma6]
# Green function
green = np.linalg.inv(fermi_energy*np.eye(internal_degree*width*length)-center_hamiltonian-self_energy1-self_energy2-self_energy3-self_energy4-self_energy5-self_energy6)
return gamma_array, green
def calculate_six_terminal_transmission_matrix(fermi_energy, h00_for_lead_4, h01_for_lead_4, h00_for_lead_2, h01_for_lead_2, center_hamiltonian, width=10, length=50, internal_degree=1, moving_step_of_leads=10):
gamma_array, green = guan.get_gamma_array_and_green_for_six_terminal_transmission(fermi_energy, h00_for_lead_4, h01_for_lead_4, h00_for_lead_2, h01_for_lead_2, center_hamiltonian, width, length, internal_degree, moving_step_of_leads)
# Transmission
transmission_matrix = np.zeros((6, 6), dtype=complex)
channel_lead_4 = guan.calculate_conductance(fermi_energy, h00_for_lead_4, h01_for_lead_4, length=3)
@@ -1007,6 +1011,16 @@ def calculate_six_terminal_transmission_matrix(fermi_energy, h00_for_lead_4, h01
transmission_matrix = np.real(transmission_matrix)
return transmission_matrix
def calculate_six_terminal_transmissions_from_lead_1(fermi_energy, h00_for_lead_4, h01_for_lead_4, h00_for_lead_2, h01_for_lead_2, center_hamiltonian, width=10, length=50, internal_degree=1, moving_step_of_leads=10):
gamma_array, green = guan.get_gamma_array_and_green_for_six_terminal_transmission(fermi_energy, h00_for_lead_4, h01_for_lead_4, h00_for_lead_2, h01_for_lead_2, center_hamiltonian, width, length, internal_degree, moving_step_of_leads)
# Transmission
transmission_12 = np.real(np.trace(np.dot(np.dot(np.dot(gamma_array[0], green), gamma_array[1]), green.transpose().conj())))
transmission_13 = np.real(np.trace(np.dot(np.dot(np.dot(gamma_array[0], green), gamma_array[2]), green.transpose().conj())))
transmission_14 = np.real(np.trace(np.dot(np.dot(np.dot(gamma_array[0], green), gamma_array[3]), green.transpose().conj())))
transmission_15 = np.real(np.trace(np.dot(np.dot(np.dot(gamma_array[0], green), gamma_array[4]), green.transpose().conj())))
transmission_16 = np.real(np.trace(np.dot(np.dot(np.dot(gamma_array[0], green), gamma_array[5]), green.transpose().conj())))
return transmission_12, transmission_13, transmission_14, transmission_15, transmission_16
## scattering matrix
def if_active_channel(k_of_channel):