An overview of quantum phase transitions (QPTs) in metallic ferromagnets, discussing both
experimental and theoretical aspects, is given. These QPTs can be classified with respect to …

The many-body physics at quantum phase transitions shows a subtle interplay between
quantum and thermal fluctuations, emerging in the low-temperature limit. In this review, we …

For the innovation of spintronic technologies, Dirac materials, in which low-energy excitation
is described as relativistic Dirac fermions, are one of the most promising systems because of …

The physics of Dirac fermions in condensed-matter systems has received extraordinary
attention following the discoveries of two new types of quantum Hall effect in single-layer …

The integer quantised conductance of one-dimensional electron systems is a well-
understood effect of quantum confinement. A number of fractionally quantised plateaus are …

We report a manifestation of first-order magnetic transitions in two-dimensional electron
systems. This phenomenon occurs in aluminum arsenide quantum wells with sufficiently low …

Semiconductors are ubiquitous in device electronics, because their charge distributions can
be conveniently manipulated with voltages to perform logic operations. Achieving a similar …

We investigate the instability of layer pseudospin paramagnetic (PSP) state to the formation
of pseudospin density wave (PSDW) in two-dimensional (2D) electron bilayers, analogous …

We discuss a tensor network method for constructing the adiabatic gauge potential—the
generator of adiabatic transformations—as a matrix product operator, which allows us to …

Two-dimensional transition metal dichalcogenides (TMDCs) are recently emerged electronic
systems with various novel properties, such as spin-valley locking, circular dichroism, valley …