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Spin interactions between two moving Dp-branes are analyzed using the Green-Schwarz formalism of boundary states. This approach turns out to be extremely efficient to compute all the spin effects related by supersymmetry to the leading nu(4)/r(7-p) term. A ...
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CuGeO3 is a good realization of a spin-Peierls system. Using neutron scattering, we have investigated the transition from the dimerized spin-Peierls phase to an incommensurately modulated high-field phase. The incommensurate period has been measured for fi ...
In off-resonance rotating-frame Overhauser spectroscopy (OFF-ROESY), spin-diffusion effects can be suppressed in selected spectral regions by doubly-selective inversion of the magnetization in the middle of the cross-relaxation interval. The resulting quen ...
We show that the two-dimensional quantum confined Stark effect in a semiconductor quantum wire can display novel behaviour, i.e. wave function splitting and cascading. No analog to these phenomena can be found in bulk material or quantum wells. The consequ ...
The dipole moment of NO(B (2) Pi) was determined for the first time by high resolution laser-induced fluorescence molecular beam spectroscopy. Specific values obtained areas follows: mu(upsilon' = 3) = 0.293(3) D, mu(upsilon' = 4) = 0.276(9) D and mu(upsil ...
We study spin interactions between two moving D-branes using the Green-Schwarz formalism of boundary states. We focus our attention on the leading terms for small velocities v, of the form v(4-n)/r(7-P+n) (v(2-n)/r(3-p+n)) for p-p (p-p + 4) systems, with 1 ...
Aspects of shaped selective pulses and their applications in assignment and structure determination by NMR are considered. Specifically, strategies for the design of selective pulses for in-phase excitation are covered. In the simplest case, 270-degrees Ga ...
Zinc(II) phthalocyanine (ZnPC) is a new photosensitizer currently undergoing phase I and II clinical trials at Lausanne's CHUV hospital for the photodynamic therapy (PDT) of early cancer in the upper aerodigestive tract. Activated oxygen species other than ...
We study the coherent optical response of a very high-finesse microcavity with a single quantum well by means of degenerate subpicosecond pump-probe spectroscopy. The dynamics of the ac Stark effect versus Pump intensity is investigated upon tuning the emp ...
Carbon-13 solid-state NMR is used to determine, via the temperature dependence of paramagnetic shifts, the spin ladder of magnetic levels and the related spin exchange parameters in 4Fe-4S clusters. This study has been carried out between 180 and 330 ...