Over the past 35 years, research on unconventional superconductivity in heavy-fermion
systems has evolved from the surprising observations of unprecedented superconducting …

This topical review describes the multitude of unconventional behaviors in the hidden order,
heavy fermion, antiferromagnetic and superconducting phases of the intermetallic …

Spin-triplet superconductors are of extensive current interest because they can host
topological state and Majorana fermions important for quantum computation. The uranium …

We study URu 2-x Fe x Si 2, in which two types of staggered phases compete at low
temperature as the iron concentration x is varied: the nonmagnetic “hidden order”(HO) …

Chemical stabilization of a high-pressure metastable state is a major challenge for the
development of advanced materials. Although chemical pressure (P chem) can effectively …

Thermal expansion, electrical resistivity, magnetization, and specific heat measurements
were performed on URu2− x Fe x Si2 single crystals for various values of Fe concentration x …

We present muon spin rotation (μ SR) and susceptibility measurements on single crystals of
isoelectronically doped URu 2− x T x Si 2 (T= Fe, Os) for do** levels up to 50%. Zero field …

The heavy fermion intermetallic compound URu2Si2 exhibits a hidden-order phase below
the temperature of 17.5 K, which supports both anomalous metallic behavior and …

Electrical resistivity measurements were performed on single crystals of URu2–x Os x Si2 up
to x= 0.28 under hydrostatic pressure up to P= 2 GPa. As the Os concentration, x, is …

Phase transitions and symmetry are intimately linked. Melting of ice, for example, restores
translation invariance. The mysterious hidden order (HO) phase of URu 2 Si 2 has, despite …