ar X iv : c on d - m at / 9 80 70 17 v 1 [ co nd - m at . d is - n n ] 1 J ul 1 99 8 Structure and structure relaxation

ar X iv : c on d - m at / 9 70 80 30 v 1 [ co nd - m at . s up r - co n ] 5 A ug 1 99 7 1

ar X iv : c on d - m at / 9 80 60 82 v 1 [ co nd - m at . m tr l - sc i ] 5 J un 1 99 8 Magnetic Particles

Amitraz Poisoning; A case study

A m i t r a z, a n i ns e c t i c i d e /a ca ri c i de of the f o r m a m i d i n e p e st i c i d e s group, is a ? 2 a d r e n e r g i c ag on i st a nd of t he a m i d i ne c h e m i ca l f a m il y generally us e d to c o n t r ol animal e c top a r a s i t e s. Poisoning due to am i t r a z i s r a r e and character...

A pr 1 99 7 Quantum Vibrational Impurity Embedded in a One - dimensional Chain ∗

X iv :c on dm at /9 70 40 69 v1 [ co nd -m at .d is -n n] 8 A pr 1 99 7 Quantum Vibrational Impurity Embedded in a One-dimensional Chain ∗ M. I. Molina†, J. A. Rössler† and G. P. Tsironis∗ † Departamento de F́ısica, Facultad de Ciencias Universidad de Chile Casilla 653, Santiago, Chile ∗Department of Physics, University of Crete and Research Center of Crete P.O. Box 2208, 71003 Heraklion-Crete, ...

ar X iv : c on d - m at / 9 70 32 48 v 1 2 8 M ar 1 99 7 Low - Temperature Features of Nano - Particle Dynamics

In view of better characterizing possible quantum effects in the dynamics of nanometric particles, we measure the effect on the relaxation of a slight heating cycle. The effect of the field amplitude is studied; its magnitude is chosen in order to induce the relaxation of large particles (∼ 7nm), even at very low temperatures (100mK). Below 1K, the results significantly depart from a simple the...