Abstract
The mechanism explaining the key role of AFM correlations in formation of the heavy fermion state is offered. It is shown that in the case of (T* - TN)/TN ≪ 1, the critical spin fluctuations transform the mean-field second-order transition to RVB state into the crossover from high-temperature paramagnetic behavior of localized spins to strongly correlated spin liquid with quasi itinerant character of susceptibility. Thus the spin-liquid state by its origin is close to magnetic instability, so either short-range or long-range AFM order should arise at low T.
Original language | English |
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Pages (from-to) | 490-492 |
Number of pages | 3 |
Journal | Physica B: Condensed Matter |
Volume | 230-232 |
DOIs | |
State | Published - 1 Jan 1997 |
Externally published | Yes |
Keywords
- Magnetic instability
- Spin liquid
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering