Nuclear Spin Relaxation in Glass States of 3He-A in Stretched Aerogel

Autor:	A. A. Senin, D. A. Krasnikhin, Vladimir V. Dmitriev, Norbert Mulders, A. N. Yudin
Rok vydání:	2010
Předmět:	Physics Free induction decay Magnetization Spin glass Spin states Spin polarization Condensed matter physics Relaxation (NMR) Spin echo Spin Hall effect General Materials Science Condensed Matter Physics Atomic and Molecular Physics and Optics
Zdroj:	Journal of Low Temperature Physics. 162:226-232
ISSN:	1573-7357 0022-2291
DOI:	10.1007/s10909-010-0289-x
Popis:	We present results of pulse NMR investigations of superfluid A-like phase of 3He in stretched aerogel. In this case we have anisotropic orbital glass (OG) with two possible types of ordering in spin space—ordered spin nematic (OG-SN) or disordered spin glass (OG-SG) states. It was found that longitudinal relaxation of magnetization is non-exponential in both states and depends on temperature and on inhomogeneity of external steady magnetic field. At the same conditions the relaxation in OG-SG state is more rapid than in OG-SN state. For transverse orientation of the magnetic field relative to anisotropy axis the duration of free induction decay signal was longer than in normal phase. It may be explained by formation of coherently precessing spin state.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::bd07cf8c893b6c5fa3f0087b1aa116e4 https://doi.org/10.1007/s10909-010-0289-x Zobrazit plný text záznamu Full text from SpringerLink