Nuclear magnetism in silver at positive and negative absolute temperatures in the low nanokelvin range

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Nuclear magnetism in silver at positive and negative absolute temperatures in the low nanokelvin range.

Rights: © 1990 American Physical Society (APS). This is the accepted version of the following article: Hakonen, Pertti J. & Yin, S. & Lounasmaa, O. V. 1990. Nuclear magnetism in silver at positive and negative absolute temperatures in the low nanokelvin range. Physical Review Letters. Volume 64, Issue 22. 2707-2710. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.64.2707, which has been publ...

متن کامل

Electronic and Nuclear Magnetism in Platinum-Iron at Ultralow Temperatures

I n Februarx 1996, physicists at the University of Bayreuth claimed a world record for producing the lowest temperature yet achieved when they announced the results of their work with platinum. They cooled 31.4 grams of plat inum to 2 millionths of a degree Celsius above absolute zero temperature, -273.15"C. I n this paper they describe the theory and the practical work behind this accomplishme...

متن کامل

Boundary magnetism in liquid 3He at very low temperatures

The low-temperature magnetic susceptibility of normal and superfluid 3He confined between mylar foils spaced 40 p apart shows a large and field-dependent enhancement over the bulk Fermi liquid magnitude. The excess susceptibility disappears when the liquid is doped with 0.5 7; 4He. The reason for the excess is unknown. We also studied the proton resonance of the mylar substrate and obtained spi...

متن کامل

Magnetism in SQUIDs at millikelvin temperatures.

We have characterized the temperature dependence of the flux threading dc SQUIDs cooled to millikelvin temperatures. The flux increases as 1/T as temperature is lowered; moreover, the flux change is proportional to the density of trapped vortices. The data are compatible with the thermal polarization of surface spins in the trapped fields of the vortices. In the absence of trapped flux, we obse...

متن کامل

The Physics of Negative Absolute Temperatures

Negative absolute temperatures were introduced into experimental physics by Purcell and Pound, who successfully applied this concept to nuclear spins; nevertheless the concept has proved controversial : a recent article aroused considerable interest by its claim, based on a classical entropy formula (the ‘volume entropy’) due to Gibbs, that negative temperatures violated basic principles of sta...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Physical Review Letters

سال: 1990

ISSN: 0031-9007

DOI: 10.1103/physrevlett.64.2707