Spectroscopic ellipsometry for low-dimensional materials and heterostructures
Discovery of low-dimensional materials has been of great interest in physics and material
science. Optical permittivity is an optical fingerprint of material electronic structures, and thus …
science. Optical permittivity is an optical fingerprint of material electronic structures, and thus …
Bogoliubov Fermi surfaces in superconductors with broken time-reversal symmetry
It is commonly believed that, in the absence of disorder or an external magnetic field, there
are three possible types of superconducting excitation gaps: The gap is nodeless, it has …
are three possible types of superconducting excitation gaps: The gap is nodeless, it has …
Spontaneous gyrotropic electronic order in a transition-metal dichalcogenide
Chirality is ubiquitous in nature, and populations of opposite chiralities are surprisingly
asymmetric at fundamental levels 1, 2. Examples range from parity violation in the subatomic …
asymmetric at fundamental levels 1, 2. Examples range from parity violation in the subatomic …
Spectroscopic visualization and phase manipulation of chiral charge density waves in 1T-TaS2
Y Zhao, Z Nie, H Hong, X Qiu, S Han, Y Yu… - Nature …, 2023 - nature.com
The chiral charge density wave is a many-body collective phenomenon in condensed matter
that may play a role in unconventional superconductivity and topological physics. Two …
that may play a role in unconventional superconductivity and topological physics. Two …
Bogoliubov Fermi surfaces: General theory, magnetic order, and topology
We present a comprehensive theory for Bogoliubov Fermi surfaces in inversion-symmetric
superconductors which break time-reversal symmetry. A requirement for such a gap …
superconductors which break time-reversal symmetry. A requirement for such a gap …
Molecular beam epitaxy growth and scanning tunneling microscopy study of ultrathin films
Molecular beam epitaxy is used to grow TiSe 2 ultrathin films on a graphitized SiC (0001)
substrate. TiSe 2 films proceed via a nearly layer-by-layer growth mode and exhibit two …
substrate. TiSe 2 films proceed via a nearly layer-by-layer growth mode and exhibit two …
Ultrafast charge ordering by self-amplified exciton–phonon dynamics in TiSe2
The origin of charge density waves (CDWs) in TiSe 2 has long been debated, mainly due to
the difficulties in identifying the timescales of the excitonic pairing and electron–phonon …
the difficulties in identifying the timescales of the excitonic pairing and electron–phonon …
Stable charge density wave phase in a monolayer
Charge density wave (CDW) phases are symmetry-reduced states of matter in which a
periodic modulation of the electronic charge frequently leads to drastic changes of the …
periodic modulation of the electronic charge frequently leads to drastic changes of the …
Endotaxial stabilization of 2D charge density waves with long-range order
Charge density waves are emergent quantum states that spontaneously reduce crystal
symmetry, drive metal-insulator transitions, and precede superconductivity. In low …
symmetry, drive metal-insulator transitions, and precede superconductivity. In low …
Singlet superconductivity enhanced by charge order in nested twisted bilayer graphene fermi surfaces
Using the continuum model for low energy non-interacting electronic structure of moiré van
der Waals heterostructures developed by Bistritzer and MacDonald [1], we study the …
der Waals heterostructures developed by Bistritzer and MacDonald [1], we study the …