Search Results for author: R. Stern

Found 3 papers, 0 papers with code

Freezing of molecular rotation in a paramagnetic crystal studied by $^{31}$P NMR

no code implementations13 Oct 2020 D. Opherden, F. Bärtl, Sh. Yamamoto, Z. T. Zhang, S. Luther, S. Molatta, J. Wosnitza, M. Baenitz, I. Heinmaa, R. Stern, C. P. Landee, H. Kühne

Whereas the anisotropy of the frequency shift and enhancement of nuclear spin-relaxation rates is driven by the molecular rotation with respect to the dipole fields stemming from the Cu ions, the second spectral moment is determined by the intramolecular interaction of nuclear $^{19}$F and $^{31}$P moments in the presence of the distinct rotation modes.

Strongly Correlated Electrons

High Field Specific Heat of 2D Quantum Spin System SrCu2(BO3)2

no code implementations23 Sep 2003 G. A. Jorge, R. Stern, M. Jaime, N. Harrison, J. Bonca, S. El Shawish, C. D. Batista, H. A. Dabkowska, B. D. Gaulin

We report measurements of the specific heat of the quantum spin liquid system SrCu2(BO3)2 in continuous magnetic fields H of up to 33 T. The specific heat vs temperature at zero field shows an anomaly at 8 K, marking the opening of a gap in the spin singlet excitations.

Strongly Correlated Electrons

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