[Kwant] Compute conductance for different system lengths

2017-10-30 Thread Jan Behrends
Dear all, I'm looking for a workaround for a problem I currently face: when computing the two-terminal conductance for a system of length L, is there a way to get the conductance for the same system of length 1,2,..L-1 on the fly (while keeping everything else the same, i.e., same width,

Re: [Kwant] Compute conductance for different system lengths

2017-10-30 Thread Joseph Weston
Hi Jan, > > I'm looking for a workaround for a problem I currently face: when > computing the two-terminal conductance for a system of length L, is > there a way to get the conductance for the same system of length > 1,2,..L-1 on the fly (while keeping everything else the same, i.e., > same

Re: [Kwant] Majorana polarization

2017-10-30 Thread Anton Akhmerov
Dear Antonio, In Kwant 1.3 you can compute expectation values of any local operator, applied to any wave function, as described in this Kwant tutorial: https://kwant-project.org/doc/1/tutorial/operators It is also possible that you can compute what you want using the output of ldos. The ordering

Re: [Kwant] [EXTERNAL] Re: beyond effective mass (limiting kwant to a range of k)

2017-10-30 Thread Maurer, Leon
Hi all, After my failure with k.p, I successfully used Kwant to implement a tight binding model of Si’s band structure -- specifically the first nearest-neighbor sp3s* model of Vogl et al., J. Phys. Chem Sol. 44, 365 (1983). I’ve attached a rough implementation (jupyter notebook attached –

[Kwant] Majorana polarization

2017-10-30 Thread Antonio Lucas Rigotti Manesco
Dear Kwant users, I am interested to calculate Majorana polarization for a system I am currently studying. I was wondering if it is possible to obtain it from kwant.ldos. The system is constructed as a kronecker product between particle-hole and spin in that order but I am not sure how

Re: [Kwant] Majorana polarization

2017-10-30 Thread Antonio Lucas Rigotti Manesco
Thanks Anton. I was not aware of these functions. Best, Em seg, 30 de out de 2017 19:11, Anton Akhmerov escreveu: > Dear Antonio, > > In Kwant 1.3 you can compute expectation values of any local operator, > applied to any wave function, as described in this Kwant

Re: [Kwant] Compute conductance for different system lengths

2017-10-30 Thread Jan Behrends
Dear all, thanks a lot for your very extensive replies! I tried to implement the RGF calculation myself some time ago, but didn't finish it. I'll keep you updated if I manage to implement it using Kwant's framework - it appears to be pretty straightforward. Best, Jan On 10/30/2017 03:58