Throughout the past three decades, the hidden order (HO) problem in URu2Si2 has
remained a 'hot topic'in the physics of strongly correlated electron systems with well over …

The multipole concept, which characterizes the spacial distribution of scalar and vector
objects by their angular dependence, has already become widely used in various areas of …

An unconventional pairing mechanism in the heavy-fermion material URu 2 Si 2 is studied.
We propose a mixed singlet-triplet d-density wave to be the hidden-order state in URu 2 Si …

Due to the interaction between the topological defects of an order parameter and underlying
fermions, the defects can possess induced fermion numbers, leading to several exotic …

Heavy-fermion systems represent a prototypical setting to study magnetic quantum phase
transitions. A particular focus has been on the physics of Kondo destruction, which captures …

The interplay of topological characteristics in real space and reciprocal space can lead to
the emergence of unconventional topological phases. In this Letter, we implement a novel …

When quantum flavor Hall insulator phases of itinerant fermions are disordered by strong
quantum fluctuations, the condensation of skyrmion textures of order parameter fields can …

We perform measurements of the heat capacity as a function of temperature on URu 2− x Os
x Si 2 alloys. Our experimental results show that the critical temperature of the second-order …

The widely studied hidden-order phase in URu 2 Si 2 exemplifies a broad class of emergent
macroscopic states originating from d-and f-electron orbitals and their collective modes. This …

A conservation law is one of the most fundamental properties in nature, but a certain class of
conservation “laws” could be spoiled by intrinsic quantum mechanical effects, so-called …