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arXiv · 1109.3672

Scattering Properties of Paramagnetic Ground States in the Three-Dimensional Random-Field Ising Model

Gaurav P. Shrivastav·Siddharth Krishnamoorthy·Varsha Banerjee·Sanjay Puri
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Abstract

We study the ground-state (T = 0) morphologies in the d = 3 random-field Ising model (RFIM) using a computationally efficient graph-cut method. We focus on paramagnetic states which arise for disorder strengths Δ> Δc, where Δc is the critical disorder strength at T = 0. These paramagnetic states consist of correlated "domains" of up and down spins which are separated by rough, fractal interfaces. They show novel scattering properties with a cusp singularity in the correlation function at short distances.

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BibTeXRIS

Gaurav P. Shrivastav, Siddharth Krishnamoorthy, Varsha Banerjee, Sanjay Puri. 2011-09-16. Scattering Properties of Paramagnetic Ground States in the Three-Dimensional Random-Field Ising Model. https://doi.org/10.1209/0295-5075%2F96%2F36003

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