Publications (25)
Optimization of the Compact Stellarator with Simple Coils at finite-beta
Haorong Qiu, Guodong Yu, Peiyou Jiang +1
An optimized stellarator at finite plasma beta is realized by single-stage optimization of simply modifying the coil currents of the Compact Stellarator with Simple Coils (CSSC)[Yu…
A programmable stellarator-tokamak hybrid for million-scale magnetic-configuration discovery
Guodong Yu, Xianyi Nie, Gwanggeun Seo +10
Tokamaks and stellarators are the leading magnetic-confinement concepts for fusion, but they rely on complementary design principles. Tokamaks use simple axisymmetric coils and pla…
Optimized finite- tokamak-stellarator hybrid configurations achieved by planar dipole-field coils
Yihui Liang, Hengqian Liu, Guodong Yu +3
The paper presents a method for designing tokamak‑stellarator hybrid configurations using planar dipole‑field coils, optimizing coil currents and plasma parameters to achieve finit…
Electronic properties and quasi-particle model of monolayer MoSiN
Zhenwei Wang, Xueheng Kuang, Guodong Yu +3
By a combined study with first-principles calculations and symmetry analysis, we theoretically investigate the electronic properties of monolayer MoSiN. While the spin-orbi…
Computationally-driven, high throughput identification of CaTe and LiSb as promising candidates for high mobility -type transparent conducting materials
Viet-Anh Ha, Guodong Yu, Francesco Ricci +5
High-performance -type transparent conducting materials (TCMs) must exhibit a rare combination of properties including high mobility, transparency and -type dopability. The d…
Quasi-single-stage optimization for permanent magnet stellarators
Guodong Yu, Ke Liu, Tianyi Qian +3
Advanced stellarators are typically optimized in two stages. The plasma equilibrium is optimized first, followed by the design of coils/permanent magnets. However, the coils/perman…
Observation of Kondo Effect in a Quadruple Quantum Dots
Runan Shang, Hai-Ou Li, Gang Cao +7
We investigate the Kondo effect in a quadruple quantum dot device of coupled-double quantum dots (DQDs), which simultaneously contains intra-DQDs and inter-DQDs coupling. A variety…
A neoclassically optimized compact stellarator with four planar coils
Guodong Yu, Zhichen Feng, Peiyou Jiang +3
A neoclassically optimized compact stellarator with simple coils has been designed. The magnetic field of the new stellarator is generated by only four planar coils including two i…
Polarization-dependent selection rules and optical spectrum atlas of twisted bilayer graphene quantum dots
Yunhua Wang, Guodong Yu, Malte Rösner +3
Finding out how symmetry encodes optical polarization information into the selection rule in molecules and materials is important for their optoelectronic applications including sp…
Proposal of A Linked Mirror Configuration for Magnetic Confinement Experiment
Zhichen Feng, Guodong Yu, Peiyou Jiang +1
A new linked mirror device for magnetic confinement experiment is proposed. The new linked mirror device consists of two straight magnetic mirrors connected by two half-torus. The…
Symmetry-directed electronic and optical properties in a two-dimensional square-lattice ZnPc-MOF
Zhonghui Han, Lanting Feng, Guodong Yu +1
The electronic structure of materials is fundamentally governed by their crystal symmetry. While most research on two-dimensional materials has focused on hexagonal lattices, such…
Dodecagonal bilayer graphene quasicrystal and its approximants
Guodong Yu, Zewen Wu, Zhen Zhan +2
Dodecagonal bilayer graphene quasicrystal has 12-fold rotational order but lacks translational symmetry which prevents the application of band theory. In this paper, we study the e…
Multi-ultraflatbands tunability and effect of spin-orbit coupling in twisted bilayer transition metal dichalcogenides
Zhen Zhan, Yipei Zhang, Pengfei Lv +5
Ultraflatbands that have been theoretically and experimentally detected in a bunch of van der Waals stacked materials showing some peculiar properties, for instance, highly localiz…
Optimizing stellarators with hidden symmetry
Hengqian Liu, Guodong Yu, Caoxiang Zhu +8
Stellarators confine fusion plasmas using three-dimensional magnetic fields composed of nested toroidal magnetic surfaces. In generic stellarators, trapped particles can drift acro…
Interlayer hybridization in graphene quasicrystal and other bilayer graphene systems
Guodong Yu, Yunhua Wang, Mikhail I. Katsnelson +2
The incommensurate 30 twisted bilayer graphene (BG) possesses both relativistic Dirac fermions and quasiperiodicity with 12-fold rotational symmetry arising from the inte…
Quasi-single-stage optimization for advanced stellarators
Guodong Yu, Yidong Xie, Hengqian Liu +1
Advanced stellarator design requires a balance between plasma performance and the manufacturability of three-dimensional modular coils. In conventional two-stage optimization, the…
Interplay between in-plane and flexural phonons in electronic transport of two-dimensional semiconductors
A. N. Rudenko, A. V. Lugovskoi, A. Mauri +3
Out-of-plane vibrations are considered as the dominant factor limiting the intrinsic carrier mobility of suspended two-dimensional materials at low carrier concentrations. Anharmon…
Electronic and mechanical properties of few-layer borophene
Hongxia Zhong, Kaixiang Huang, Guodong Yu +1
We report first principle calculations of electronic and mechanical properties of few-layer borophene with the inclusion of interlayer van der Waals (vdW) interaction. The anisotro…
Existence of an optimized stellarator with simple coils
Guodong Yu, Zhichen Feng, Peiyou jiang +1
An optimized compact stellarator with four simple coils is obtained from direct optimization via coil shape. The new stellarator consists of two interlocking coils and two vertical…
Pressure and electric field dependence of quasicrystalline electronic states in 30 twisted bilayer graphene
Guodong Yu, Mikhail I. Katsnelson, Shengjun Yuan
30 twisted bilayer graphene demonstrates the quasicrystalline electronic states with 12-fold symmetry. These states are however far away from the Fermi level, which makes…
Optimization of stellarator configurations combining omnigenity and piecewise omnigenity
Hengqian Liu, Guodong Yu, José Luis Velasco +1
We present a method for optimizing stellarator configurations that combine omnigenity and piecewise omnigenity (pwO). Within the \texttt{OOPS} optimization framework [Liu \textit{e…
Effects of Magnetic Helicity on 3D Equilibria and Self-Organized States in KTX Reversed Field Pinch
Ke Liu, Guodong Yu, Yuhua Huang +10
The RFP is a toroidal magnetic configuration in which plasmas can spontaneously transform into different self-organized states. Among various states, the QSH state has a dominant c…
Structure-Composition-Property Relationships in Antiperovskite Nitrides: Guiding a Rational Alloy Design
Hongxia Zhong, Chunbao Feng, Hai Wang +7
The alloy strategy through A- or X-site is a common method for experimental preparation of high-performance and stable lead-based perovskite solar cells. As one of the important ca…
Tunable Half-Metallicity and Edge Magnetism of H-saturated InSe Nanoribbons
Weiqing Zhou, Guodong Yu, A. N. Rudenko +1
We report on a theoretical study of electronic and magnetic properties of hydrogen-saturated InSe nanoribbons (H-ZISNs). Based on hybrid-functional first-principles calculations, w…
Electronic structure of 30° twisted double bilayer graphene
Guodong Yu, Zewen Wu, Zhen Zhan +2
In this paper, the electronic properties of 30° twisted double bilayer graphene, which loses the translational symmetry due to the incommensurate twist angle, are studied by means…