Distinguishing a Mott insulator from a trivial insulator with atomic adsorbates

J Lee, KH Jin, HW Yeom - Physical Review Letters, 2021 - APS
In an electronic system with various interactions intertwined, revealing the origin of its many-
body ground state is challenging and a direct experimental way to verify the correlated …

Visualization of chiral electronic structure and anomalous optical response in a material with chiral charge density waves

HF Yang, KY He, J Koo, SW Shen, SH Zhang, G Liu… - Physical review …, 2022 - APS
Chiral materials have attracted significant research interests as they exhibit intriguing
physical properties, such as chiral optical response, spin-momentum locking, and chiral …

Raman Optical Activity of 1T-TaS2

EM Lacinska, M Furman, J Binder, I Lutsyk… - Nano Letters, 2022 - ACS Publications
Measurements of optical activity can be readily performed in transparent matter by means of
a rotation of transmitted light polarization. In the case of opaque bulk materials, such …

Spin–orbit and exchange proximity couplings in graphene/1T-TaS2 heterostructure triggered by a charge density wave

K Szałowski, M Milivojević, D Kochan, M Gmitra - 2D Materials, 2023 - iopscience.iop.org
Proximity-induced fine features and spin-textures of the electronic bands in graphene-based
van der Waals heterostructures can be explored from the point of tailoring a twist angle …

Atomic-scale thermopower in charge density wave states

D Kim, EC Shin, Y Lee, YH Lee, M Zhao… - Nature …, 2022 - nature.com
The microscopic origins of thermopower have been investigated to design efficient
thermoelectric devices, but strongly correlated quantum states such as charge density …

Influence of structural defects on charge density waves in 1T-TaS2

I Lutsyk, K Szalowski, P Krukowski, P Dabrowski… - Nano Research, 2023 - Springer
The influence of intrinsic defects of 1T-TaS2 on charge density waves (CDWs) is studied
using scanning tunneling microscopy and spectroscopy (STM, STS), angle-resolved …

Anomalously suppressed thermal conduction by electron‐phonon coupling in charge‐density‐wave tantalum disulfide

H Liu, C Yang, B Wei, L Jin, A Alatas, A Said… - Advanced …, 2020 - Wiley Online Library
Charge and thermal transport in a crystal is carried by free electrons and phonons
(quantized lattice vibration), the two most fundamental quasiparticles. Above the Debye …

Soft x-ray photoelectron momentum microscope for multimodal valence band stereography

F Matsui, K Hagiwara, E Nakamura, T Yano… - Review of Scientific …, 2023 - pubs.aip.org
The photoelectron momentum microscope (PMM) in operation at BL6U, an undulator-based
soft x-ray beamline at the UVSOR Synchrotron Facility, offers a new approach for μm-scale …

Surface enhanced electron correlation on the trivial quasi-two-dimensional bulk insulator

J Jung, JW Park, J Kim, HW Yeom - Physical Review B, 2022 - APS
While the prototypical quasi-two-dimensional charge density wave system of 1 T-TaS 2 has
been known as a Mott insulator with a possibility of quantum spin liquid, recent band …

Visualizing the evolution from Mott insulator to Anderson insulator in Ti-doped 1T-TaS2

W Zhang, J Gao, L Cheng, K Bu, Z Wu, Y Fei… - NPJ Quantum …, 2022 - nature.com
The electronic evolution of doped Mott insulators has been extensively studied for decades
in search of exotic physical phases. The proposed Mott insulator 1 T-TaS2 provides an …