And also, when I am plotting the spectrum in varing magnetic field with the
hamiltonian as a sparse matrix. I am getting an value error.
*ValueError: x and y must have same first dimension, but have shapes
(100,) and (1, 15)*
I don't know what does it mean?
*def plot_spectrum(syst, Bfields): energies = [] for B in
Bfields: ham_mat =
syst.hamiltonian_submatrix(params=dict(B=B), sparse=True) ev =
sla.eigsh(ham_mat.tocsc(), k=15, sigma=0,
return_eigenvectors=False) energies.append(ev) pyplot.figure()
pyplot.plot(Bfields, energies) pyplot.xlabel("magnetic field [arbitrary
units]") pyplot.ylabel("energy [t]") pyplot.show()*
*plot_spectrum(syst, [iB * 0.002 for iB in range(100)])*
Best regards,
Naveen
On Tue, May 7, 2019 at 1:35 PM Naveen Yadav <naveengunwa...@gmail.com>
wrote:
> That is okay, but still something wrong.
>
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> Naveen
> Department of Physics & Astrophysics
> University of Delhi
> New Delhi-110007
>
> On Tue, May 7, 2019, 13:29 Joseph Weston <joseph.westo...@gmail.com>
> wrote:
>
>>
>> > Dear Joseph,
>> >
>> > As per your instructions I have build the system, but the code is not
>> > giving the desired result.
>> > Here is the code please have a look on it.
>>
>>
>> 'y' should be the y position of the sites of the hopping, not an input
>> parameter to the system construction:
>>
>> def hoppingz(site0, site1):
>>
>> y = site0.pos[1]
>>
>> ...
>>
>>
>> Happy Kwanting,
>>
>> Joe
>>
>>
>>
>>
--
With Best Regards
NAVEEN YADAV
Ph.D Research Scholar
Deptt. Of Physics & Astrophysics
University Of Delhi.
