People

@article{WOS:001718544600001,
title = {The 2D materials roadmap},
author = {Wencai Ren and Peter Boggild and Joan Redwing and Kostya S Novoselov and Luzhao Sun and Yue Qi and Kaicheng Jia and Zhongfan Liu and Oliver Burton and Jack Alexander-Webber and Stephan Hofmann and Yang Cao and Yu Long and Quan-Hong Yang and Dan Li and Soo Ho Choi and Ki Kang Kim and Young Hee Lee and Mian Li and Qing Huang and Yury Gogotsi and Nicholas Clark and Amy Carl and Roman Gorbachev and Thomas Olsen and Johanna Rosen and Kristian Sommer Thygesen and Dmitri K Efetov and Bjarke S Jessen and Matthew Yankowitz and Julien Barrier and Roshan Krishna Kumar and Frank H L Koppens and Hui Deng and Xiaoqin Li and Siyuan Dai and D N Basov and Xinran Wang and Saptarshi Das and Xiangfeng Duan and Zhihao Yu and Markus Borsch and Andrea C Ferrari and Rupert Huber and Mackillo Kira and Fengnian Xia and Xiao Wang and Zhong-Shuai Wu and Xinliang Feng and Patrice Simon and Hui-Ming Cheng and Bilu Liu and Yi Xie and Wanqin Jin and Rahul Raveendran Nair and Yan Xu and Qing Zhang and Ajit K Katiyar and Jong-Hyun Ahn and Igor Aharonovich and Mark C Hersam and Stephan Roche and Qilin Hua and Guozhen Shen and Tianling Ren and Hao-Bin Zhang and Chong Min Koo and Nikhil Koratkar and Vittorio Pellegrini and Robert J Young and Bill Qu and Max Lemme and Andrew J Pollard},
doi = {10.1088/2053-1583/ae2b82},
times_cited = {15},
issn = {2053-1583},
year = {2026},
date = {2026-06-01},
journal = {2D MATERIALS},
volume = {13},
number = {2},
publisher = {IOP Publishing Ltd},
address = {No.2 The Distillery, Glassfields, Avon Street, Bristol, ENGLAND},
abstract = {Over the past two decades, two-dimensional (2D) materials have rapidly
evolved into a diverse and expanding family of material platforms. Many
members of this materials class have demonstrated their potential to
deliver transformative impact on fundamental research and technological
applications across different fields. In this roadmap, we provide an
overview of the key aspects of 2D material research and development,
spanning synthesis, properties and commercial applications. We
specifically present roadmaps for high impact 2D materials, including
graphene and its derivatives, transition metal dichalcogenides, MXenes
as well as their heterostructures and moir & eacute; systems. The
discussions are organized into thematic sections covering emerging
research areas (e.g. twisted electronics, moir & eacute;
nano-optoelectronics, polaritronics, quantum photonics, and neuromorphic
computing), breakthrough applications in key technologies (e.g. 2D
transistors, energy storage, electrocatalysis, filtration and
separation, thermal management, flexible electronics, sensing,
electromagnetic interference shielding, and composites) and other
important topics (computational discovery of novel materials,
commercialization and standardization). This roadmap focuses on the
current research landscape, future challenges and scientific and
technological advances required to address, with the intent to provide
useful references for promoting the development of 2D materials.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}

@article{WOS:001554643400001,
title = {Pseudomagnetic Control of Light Waves in the Electrically Tunable
Photonic Crystals with Deformation Engineering},
author = {Zhipeng Qi and Hao Sun and Guohua Hu and Xiumin Song and Yaohui Sun and Wanghua Zhu and Bo Liu and Xuechao Yu and Francois M Peeters and Yiping Cui},
doi = {10.1002/lpor.202501225},
times_cited = {1},
issn = {1863-8880},
year = {2026},
date = {2026-01-01},
journal = {LASER & PHOTONICS REVIEWS},
volume = {20},
number = {1},
publisher = {WILEY-V C H VERLAG GMBH},
address = {POSTFACH 101161, 69451 WEINHEIM, GERMANY},
abstract = {With the demonstrations of pseudo-magnetism in optical systems, the
pursuits of its practical applications require not only the use of
pseudomagnetic fields (PMFs) to create functional optical devices but
also a reliable method to manipulate pseudo-magnetism-affected light
waves. Here, an ultracompact Si-based cavity formed by triaxially
deformed photonic honeycomb lattices is experimentally demonstrated. The
triaxial deformation can lead to Landau quantization, showing the
possibilities of realizing the localization and resonating of photons
with PMFs. Through adopting the Si waveguides for directional coupling,
the transmission spectra for the proposed cavities in the photonic
integrated circuits are successfully obtained. This opens a novel avenue
for highly efficient excitations and detections of Landau-quantized
photonic density of states, totally on chip. Moreover, a linear
electrical tunability of -0.018 THz/mW for the pseudo-magnetism-induced
optical resonant states, fulfilling the manipulation of photons without
varying deformations, is verified. The work introduces a mechanism for
performing tunable light waves in triaxial deformation-engineered
systems, which enriches the design principles of integrated optical
devices.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}

@article{WOS:001651213900002,
title = {Deterministic formation of carbon-functionalized quantum emitters in
hexagonal boron nitride},
author = {Manlin Luo and Junyu Ge and Pengru Huang and Yi Yu and In Cheol Seo and Kunze Lu and Hao Sun and Jian Kwang Tan and Beng Kang Tay and Sejeong Kim and Weibo Gao and Hong Li and Donguk Nam},
doi = {10.1038/s41467-025-66314-6},
times_cited = {2},
year = {2025},
date = {2025-12-01},
journal = {NATURE COMMUNICATIONS},
volume = {16},
number = {1},
publisher = {NATURE PORTFOLIO},
address = {HEIDELBERGER PLATZ 3, BERLIN, 14197, GERMANY},
abstract = {Forming single-photon emitters (SPEs) in insulating hexagonal boron
nitride (hBN) has sparked wide interests in the quantum photonics.
Despite significant progress, it remains challenging to
deterministically create SPEs at precise locations with a specific type
of element for creating defects. In this study, we present a
straightforward approach to generate site-deterministic
carbon-functionalized quantum emitters in hBN by harnessing ultrasonic
nanoindentation. The obtained SPEs are high-quality and can be scaled up
to large arrays in a single fabrication step. Comprehensive experimental
analyses reveal that the insertion of carbon atoms into the hBN lattice
is the source of the robust quantum emission. Complementary theoretical
studies suggest possible candidates for the structural origin of the
defects based on our experimental results. This rapid and scalable
nanoindentation method provides a new way to create SPE arrays with
specific types of atoms, enabling the comprehensive investigation of the
origins and mechanics of SPE formations in two-dimensional (2D)
materials and beyond.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}

@article{WOS:001501130000006,
title = {Orbital magnetic moment dynamics and Hanle magnetoresistance in
multilayered two-dimensional materials},
author = {Hao Sun and Giovanni Vignale},
doi = {10.1103/PhysRevB.111.L180408},
times_cited = {0},
issn = {2469-9950},
year = {2025},
date = {2025-05-01},
journal = {PHYSICAL REVIEW B},
volume = {111},
number = {18},
publisher = {AMER PHYSICAL SOC},
address = {ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA},
abstract = {The orbital Hall effect (OHE) has several potential advantages over the
spin Hall effect (SHE), the latter being well known for its many
applications in spintronics. Like the spin Hall effect, the OHE occurs
in nonmagnetic materials without stringent symmetry requirements, but
unlike the SHE it does not rely on relatively weak spinorbit
interaction. In two-dimensional (2D) materials these advantages risk
being nullified by the difficulty of turning the orbital moment away
from the out-of-plane direction. Multilayered 2D materials offer a way
out of this difficulty because the fluctuating in-plane component of the
orbital moment, due to motion of electrons between the layers, can latch
to a magnetic field. To describe this effect we have derived a
semiphenomenological equation of motion for the density of orbital
magnetic moment in stacked 2D materials subjected to a magnetic field.
Unlike the equations of motion for the spin, these equations produce a
strongly anisotropic dynamics, which is governed by an inverse effective
mass tensor for which we provide a fully microscopic expression. As a
first application, we combine our equation of motion with
phenomenological drift-diffusion equations to formulate a theory of
orbital Hanle magnetoresistance in multilayered 2D materials. This
theoretical framework also offers a tool for exploring the microscopic
theory of the orbital Hall effect, which remains an active area of
debate.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}

@article{WOS:001448476600002,
title = {Nonconserved density accumulations in orbital Hall transport: Insights
from linear response theory},
author = {Hao Sun and Alexander Kazantsev and Alessandro Principi and Giovanni Vignale},
doi = {10.1103/PhysRevB.111.075432},
times_cited = {3},
issn = {2469-9950},
year = {2025},
date = {2025-02-01},
journal = {PHYSICAL REVIEW B},
volume = {111},
number = {7},
publisher = {AMER PHYSICAL SOC},
address = {ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA},
abstract = {We present a linear response theory for stationary density accumulations
in anomalous transport phenomena, such as the orbital Hall effect, where
the transported density is odd under time reversal and the underlying
charge is not conserved. Our framework applies to both metals and
insulators, topologically trivial or nontrivial, and distinguishes
between contributions from bulk and edge states, as well as undergap and
dissipative currents. In time-reversal invariant systems, we prove a
microscopic reciprocity theorem showing that only dissipative currents
at the Fermi level contribute to density accumulation, while undergap
currents do not. In contrast, in non-time-reversal invariant systems,
nondissipative density accumulations, such as magnetoelectric
polarization, can appear in both the bulk and edges. Importantly, we
find that the net density accumulation does not always vanish, pointing
to a global nonconservation that implies the existence of a nonvanishing
integrated ``net torque'' in addition to a ``distributed torque,''
which has zero spatial average. We show that the distributed torque can
be absorbed in the divergence of a redefined current that satisfies
Onsager reciprocity, while the net torque must be explicitly accounted
for. Finally, we apply our theory to two-dimensional models with edge
terminations.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}