Vortex lines or sheets - what is formed in dynamic drives?
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In isotropic macroscopic quantum systems vortex lines can be formed while in anisotropic systems also vortex sheets are possible. Based on measurements of superfluid 3He-A, we present the principles which select between these two competing forms of quantized vorticity: sheets displace lines if the frequency of the external field exceeds a critical limit. The resulting topologically stable state consists of multiple vortex sheets and has much faster dynamics than the state with vortex lines.
RevTex, 5 pages, sumbitted to Phys. Rev. Lett
RevTex, 5 pages, sumbitted to Phys. Rev. Lett