TY - JOUR
T1 - Cryptoferromagnetism in superconductors with a broken time-reversal symmetry
AU - Sonin, E. B.
AU - Logoboy, N. A.
PY - 2009
Y1 - 2009
N2 - The cryptoferromagnetic (CFM) state (the state with intrinsic domain structure) in superconducting ferromagnets subjected to external magnetic field is studied theoretically. Ferromagnetism (broken time-reversal symmetry) originates either from electron spin or from orbital moment of Cooper pairs (chiral p-wave superconductors like Sr2RuO4). We suggest the phase diagram, where the CFM state is present together with the Meissner and the mixed states. The size of domains in the CFM state is roughly of the order of the London penetration depth and in contrast to normal ferromagnets does not depend on either shape or size of the sample. At the scales much larger than the London penetration depth the spontaneous magnetization is absent in average, therefore the state is called cryptoferromagnetic. In contrast to the fully diamagnetic Meissner state or the partially diamagnetic mixed state, the CFM state is paramagnetic. The CFM state can be detected experimentally with detailed measurements of magnetization curves.
AB - The cryptoferromagnetic (CFM) state (the state with intrinsic domain structure) in superconducting ferromagnets subjected to external magnetic field is studied theoretically. Ferromagnetism (broken time-reversal symmetry) originates either from electron spin or from orbital moment of Cooper pairs (chiral p-wave superconductors like Sr2RuO4). We suggest the phase diagram, where the CFM state is present together with the Meissner and the mixed states. The size of domains in the CFM state is roughly of the order of the London penetration depth and in contrast to normal ferromagnets does not depend on either shape or size of the sample. At the scales much larger than the London penetration depth the spontaneous magnetization is absent in average, therefore the state is called cryptoferromagnetic. In contrast to the fully diamagnetic Meissner state or the partially diamagnetic mixed state, the CFM state is paramagnetic. The CFM state can be detected experimentally with detailed measurements of magnetization curves.
UR - http://www.scopus.com/inward/record.url?scp=77952533114&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/150/5/052245
DO - 10.1088/1742-6596/150/5/052245
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AN - SCOPUS:77952533114
SN - 1742-6588
VL - 150
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 5
M1 - 052245
ER -