Title page of Ising model paper

March Meeting 2021

Coming from my poster?

Thanks for coming to my poster! Unfortunately, I got called upon to serve as a judge for the APS FECS Early Career poster prize, so I won’t be able to present. Fortunately, I am presenting this same work as a talk on Thursday at 9:12am central/10:12am eastern.

R20.00005: Field-induced freezing in the unfrustrated Ising antiferromagnet
Thursday, March 18, 9:12 AM–9:24 AM CDT
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For more information, keep reading!

Coming from my talk?

Download slides.

If the animations didn’t work (50-50 shot), scroll down to watch them. ⬇️

One of the great things about this problem is that the simulations run extremely fast, and there is probably interesting work that can be done with just a laptop. I have posted the code online using Gitlab if you want to give it a try (also on Github, Zenodo).

This talk is based on my paper:
Field-induced freezing in the unfrustrated Ising antiferromagnet
Phys. Rev. E 102 032112 (2020) [free pdf] [arXiv:2001:09268]

If you missed my talk, take a look at this blog post summarizing the paper, or my recorded talk from the 2020 March Meeting (which is a bit out of date). And if you have questions, don’t hesitate to contact me.

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If you’re still here and you are an early career scientist (postdoc, junior faculty, recent graduate in industry), or if you just care about the well being of early career scientists, you may want to consider joining the APS Forum for Early Career Scientists (FECS). It’s free for APS members.

Animations

First plateau (h=1)

Animated gif showing Ising model progressing from a ground state to a frozen state.
The spin configuration over time starting from a random (T=∞) state and doing single spin flip Metropolis updates at T=0 and h=1 until we arrive at a final frozen state. Individual spin states are denoted by the (+) and (-); the background shading shows which of the antiferromagnetic ground states each site is in. In the final frozen state the domain walls are all straight lines or corners with (+) on the inside.

Second plateau (h=3)

The spin configuration over time starting from a random (T=∞) state and doing single spin flip Metropolis updates at T=0 and h=3 until we arrive at a final frozen state. Individual spin states are denoted by the (+) and (-); the background shading shows which of the antiferromagnetic ground states each site is in. In the final frozen state the domain walls are all diagonal or square-wave-like with excess (+) spin.