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Science in very high magnetic fields: NMR investigations of exotic quantum spin states

Science in very high magnetic fields: NMR investigations of exotic quantum spin states

This video was recorded at Kolokviji na Institutu "Jožef Stefan". After a short introduction presenting Grenoble High Magnetic Field Laboratory and its high-field NMR facility, we will illustrate possibilities of high-field NMR in Solid State Physics on several examples of low-dimensional, quantum, antiferromagnetic spin systems. We further focus on two types of 2D, dimer, spin systems, which give raise to very different ground states under an applied magnetic field. One example is the "Shastry-Sutherland" compound SrCu2(BO3)2, which exhibits magnetization plateaus at fractional values of the saturation magnetization. In this compound plateaus appear because the kinetic energy of the triplet excitations is strongly reduced by frustration, so that the triplets can crystallize into a... Show More
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