Magnetic properties of the intermediate state in small type-I superconductors
نویسندگان
چکیده
منابع مشابه
Impeded growth of magnetic flux bubbles in the intermediate state pattern of type I superconductors.
Normal state bubble patterns in type I superconducting indium and lead slabs are studied by the high resolution magneto-optical imaging technique. The size of bubbles is found to be independent of the long-range interaction between the normal state domains. Under bubble diameter and slab thickness proper scaling, the results gather onto a single master curve. We calculate the equilibrium diamet...
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In the intermediate state of a thin type-I superconductor magnetic flux penetrates in a disordered set of highly branched and fingered macroscopic domains. To understand these shapes, we study in detail a recently proposed ‘‘current-loop’’ model @R. E. Goldstein, D. P. Jackson, and A. T. Dorsey, Phys. Rev. Lett. 76, 3818 ~1996!# that models the intermediate state as a collection of tense curren...
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A theory is developed of the intricately fingered patterns of flux domains observed in the intermediate state of thin type-I superconductors. The patterns are shown to arise from the competition between the long-range BiotSavart interactions of the Meissner currents encircling each region and the superconducting-normal surface energy. The energy of a set of such domains is expressed as a nonloc...
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Structure of the intermediate state in type-I superconducting lead (Pb) is shown to be very sensitive to the ramp rate of an applied magnetic field. The configurations of resulting static patterns depend sensitively on the shape of the specimen. In particular, geometric barrier, present in the samples with rectangular cross-section, plays an important role in determining the sharp boundary betw...
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We show that features of the dynamical spin susceptibility can unambiguously distinguish between different pairing symmetries of the superconducting state in iron-based superconductors. A magnetic resonance is a feature for the extended sx2y2-wave cos kx cos ky pairing symmetry. It is present in the pure superconducting SC state but weakens in the mixed SC and magnetically ordered state. We cal...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2005
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.72.020505