Evidence for unconventional superconductivity in twisted bilayer graphene

M Oh, KP Nuckolls, D Wong, RL Lee, X Liu… - Nature, 2021 - nature.com
The emergence of superconductivity and correlated insulators in magic-angle twisted bilayer
graphene (MATBG) has raised the intriguing possibility that its pairing mechanism is distinct …

Strongly correlated Chern insulators in magic-angle twisted bilayer graphene

KP Nuckolls, M Oh, D Wong, B Lian, K Watanabe… - Nature, 2020 - nature.com
Interactions between electrons and the topology of their energy bands can create unusual
quantum phases of matter. Most topological electronic phases appear in systems with weak …

Quantum textures of the many-body wavefunctions in magic-angle graphene

KP Nuckolls, RL Lee, M Oh, D Wong, T Soejima… - Nature, 2023 - nature.com
Interactions among electrons create novel many-body quantum phases of matter with
wavefunctions that reflect electronic correlation effects, broken symmetries and collective …

Cascade of electronic transitions in magic-angle twisted bilayer graphene

D Wong, KP Nuckolls, M Oh, B Lian, Y Xie, S Jeon… - Nature, 2020 - nature.com
Magic-angle twisted bilayer graphene exhibits a variety of electronic states, including
correlated insulators,–, superconductors,–and topological phases,,. Understanding the …

Atomically thin quantum spin hall insulators

MS Lodge, SA Yang, S Mukherjee… - Advanced …, 2021 - Wiley Online Library
Atomically thin topological materials are attracting growing attention for their potential to
radically transform classical and quantum electronic device concepts. Among them is the …

Resolving exotic quantum states using scanning tunneling microscopy

S Jeon, M Oh - Current Applied Physics, 2024 - Elsevier
Scanning tunneling microscopy (STM) is a pivotal surface-imaging technique that reveals
intricate atomic and electronic structures. Its remarkable subatomic spatial resolution …

Spectroscopy of twisted bilayer graphene correlated insulators

D Călugăru, N Regnault, M Oh, KP Nuckolls, D Wong… - Physical review …, 2022 - APS
We analytically compute the scanning tunneling microscopy (STM) signatures of integer-
filled correlated ground states of the magic angle twisted bilayer graphene (TBG) narrow …

Development of a cryogen-free sub-3 K low-temperature scanning probe microscope by remote liquefaction scheme

R Ma, H Li, C Shi, F Wang, L Lei, Y Huang… - Review of Scientific …, 2023 - pubs.aip.org
We developed a new scheme for cryogen-free cooling down to sub-3 K temperature range
and ultra-low vibration level. An ultra-high-vacuum cryogen-free scanning probe microscope …

Determining the temperature of a millikelvin scanning tunnelling microscope junction

T Esat, X Yang, F Mustafayev, H Soltner… - Communications …, 2023 - nature.com
Cooling the junction of a scanning tunneling microscope to millikelvin temperatures is
fundamental for high-resolution scanning tunneling spectroscopy. However, accurately …

Achieving μeV tunneling resolution in an in-operando scanning tunneling microscopy, atomic force microscopy, and magnetotransport system for quantum materials …

J Schwenk, S Kim, J Berwanger, F Ghahari… - Review of Scientific …, 2020 - pubs.aip.org
Research in new quantum materials requires multi-mode measurements spanning length
scales, correlations of atomic-scale variables with a macroscopic function, and …