Re: [Kwant] Kwant-discuss Digest, Vol 15, Issue 3
hello joe, yes you are right it is more of fizics question....I will following the same you said ...next time,But thank you so much for helping me anyways. ANANT VIJAY VARMA M.Tech. STUDENT CENTER FOR CONVERGING TECHNOLOGIES UNIVERSITY OF RAJASTHAN JAIPUR On Mon, Nov 10, 2014 at 5:33 PM, <kwant-discuss-request@kwant-project.org> wrote:
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Today's Topics:
1. Re: Kwant-discuss Digest, Vol 15, Issue 2 (ANANT VIJAY) 2. Re: About spin orbital coupling (Joseph Weston)
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Message: 1 Date: Mon, 10 Nov 2014 12:02:21 +0530 From: ANANT VIJAY <anantvijaycct@gmail.com> To: kwant-discuss@kwant-project.org Subject: Re: [Kwant] Kwant-discuss Digest, Vol 15, Issue 2 Message-ID: <CAN8vUmXQR=0AW0J87= tM6hAdWgf5_H1ut4u+HQeAGC0hGHkPBg@mail.gmail.com> Content-Type: text/plain; charset="utf-8"
well i am trying to generate the spin orbital coupling in the graphne lattice...or I should say I am looking for Quantum spin hall effect .Here i am using 2x2 matrix.I am not very sure about this also.As gien in tutorial SOI is -i*alpha(delx*sigma_y-dely*sigma_x),which gives me hopping in x and y diretions respectively.Here in graphene lattice the hopping is 3 different directions as i mentioned in last post .and i want to write hop for these .Do I need to take the sin cos component of above expression or what ? please help.thank you
ANANT VIJAY VARMA M.Tech. STUDENT CENTER FOR CONVERGING TECHNOLOGIES UNIVERSITY OF RAJASTHAN JAIPUR
On Fri, Nov 7, 2014 at 5:33 PM, <kwant-discuss-request@kwant-project.org> wrote:
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Today's Topics:
1. Re: About spin orbital coupling (Joseph Weston)
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Message: 1 Date: Thu, 06 Nov 2014 14:08:24 +0100 From: Joseph Weston <joseph.weston@cea.fr> To: kwant-discuss@kwant-project.org Subject: Re: [Kwant] About spin orbital coupling Message-ID: <545B72C8.8060103@cea.fr> Content-Type: text/plain; charset="iso-8859-1"
Hello everyone. I am applying the spin orbit coupling to the honeycomb lattice but there are three different kind of hopping and I am writing
On 06/11/14 08:45, ANANT wrote: this
sys[lat.shape(shape, (2.46, 0))] =onsite sys[kwant.builder.HoppingKind((0, 0), A,B )]= -t * s_0 - 1j * alpha *
s_y
sys[kwant.builder.HoppingKind((0,1), A,B )] = -t * s_0 + 1j * alpha *
s_x
sys[kwant.builder.HoppingKind((-1,1), A,B )] = -t * s_0 + 1j * alpha *
s_x
But this is not right .What should I write in place of this.? please
help me
thank yo u in advance
Hello,
Can you be a bit more specific about what it is that you are doing: - what model are you are using for spin orbit? - what is the expected output? - what is the actual output?
It is always useful to be as specific as possible, especially through the medium of email.
Thanks,
Joe
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