Help Privacy Policy Disclaimer
  Advanced SearchBrowse




Journal Article

Heavy fermions: Typical phenomena and recent developments

There are no MPG-Authors available
External Resource
No external resources are shared
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available

Steglich, F., Geibel, C., Gloos, K., Olesch, G., Schank, C., Wassilew, C., et al. (1994). Heavy fermions: Typical phenomena and recent developments. Journal of Low Temperature Physics, 95(1-2), 3-22. doi:10.1007/BF00754918.

Cite as: http://hdl.handle.net/11858/00-001M-0000-0019-DDC0-9
A survey is given of typical phenomena, new materials and recent developments in heavy-fermion physics. In particular, the following topics are addressed: (i) YbNiAl, a new heavy-fermion local-moment antiferromagnet (LMM) with Neel temperature T(N) = 3 K, (ii) ''non-Fermi-liquid'' behavior at the magnetic instability in two heavy-fermion systems with intact from sublattice, i.e. orthorhombic CePt(Si1-xGex) and tetragonal U(Cu4+xAl8-x), (iii) the low-temperature properties of the anisotropic ''Kondo insulator'' CeNiSn, and (iv) some of the most unusual observations made on ''low-carrier-density'' rare-earth systems like Sm3Te4 and Sm3Se4. While the ezotic symmetry-broken (superconducting and magnetic) ground states of heavy-fermion metals are discussed in several other contributions to this volume, we focus in the remainder of this paper on the relationship between LMM ordering and heavy-fermion superconductivity: Firstly, the LMM ordered compound CeCu2Ge2 (T(N) = 4.1 K) is addressed which was recently found to become a non-magnetic heavy-fermion superconductor under high hydrostatic pressure, p greater-than-or-equal-to 70 kbar (D. Jaccard et al., Phys. Lett. A 163,475 (1992)). Point-contact spectroscopy is used to investigate in more detail the high-pressure superconducting phase of CeCU2Ge2. Secondly, we summarize high-pressure results on UPd2Al3, the first compound to show homogeneous coexistence between LMM ordering and heavy-fermion superconductivity.