Xue Liu

Anhui University

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Mingliang Tian

High Magnetic Field Laboratory

Chunlei Yue

Tulane University

Qihua Xiong

Tsinghua University

Wenshuai Gao

Anhui University

Zhiqiang Mao

Pennsylvania State University

Wei Jiang

Henan University

Dehua Wang

Guizhou Normal University

Jin Hu

University of Arkansas at Fayetteville

Sheng Liu

Collaborative Innovation Center of Chemistry for Energy Materials

ПБ

Павел Б. Сорокин

Technological Institute for Superhard and Novel Carbon Materials

Cooperative Institutions

Chinese Academy of Sciences

119

Anhui University

University of Science and Technology of China

Hefei Institutes of Physical Science

Nanyang Technological University

University of Chinese Academy of Sciences

Tsinghua University

Helmholtz Zentrum München

Nanjing University

National University of Singapore

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The Shape Complexity of a Particle in the Circular Quantum Well with Homogeneous Perpendicular Magnetic Field

physica status solidi (b) (2024)

Dehua Wang Xue Liu Xin‐yu Xie Binhua Chu Gang Zhao

The shape complexity of a particle confined in the circular quantum well with an external homogeneous perpendicular magnetic field is investigated. First, the Shannon entropy and the averaging electron probability density, as well as the shape complexities in the position and momentum spaces for several quantum states, are computed and discussed. The quantum confinement effect on the shape complexity of this system is extensively explored. Then, the influence of the magnetic field on the shape complexities of the particle confined in the circular quantum well is discussed. It is demonstrated that the shape complexity exhibits scaled invariance under the influence of the magnetic field. However, when the radius of the quantum well is fixed, the shape complexity of the given quantum state changes with the magnetic field strength. Results suggest that the shape complexity of a particle confined in the quantum well can be changed by varying both the strength of the magnetic field and the size of the well. This study has some practical applications in quantum information measurement of the confined particle and can guide future researches for the disorder characteristics of confined particle in semiconductor quantum dots.

Principal quantum number

Magnetic Particle Imaging

10.1002/pssb.202300494

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Determination of band offset in MgO/InP heterostructure by X-ray photoelectron spectroscopy

Vacuum (2016)

Xue Liu Xiaohua Wang Dengkui Wang Jilong Tang Xuan Fang

Band offset

10.1016/j.vacuum.2016.10.012

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Citations (9)

Trion-Mediated Förster Resonance Energy Transfer and Optical Gating Effect in WS₂/hBN/MoSe₂ Heterojunction

ACS Nano (2020)

Zehua Hu Pedro Ludwig Hernández‐Martínez Xue Liu Mohamed-Raouf Amara Weijie Zhao

van der Waals two-dimensional layered heterostructures have recently emerged as a platform, where the interlayer couplings give rise to interesting physics and multifunctionalities in optoelectronics. Such couplings can be rationally controlled by dielectric, separation, and stacking angles, which affect the overall charge or energy-transfer processes, and emergent potential landscape for twistronics. Herein, we report the efficient Förster resonance energy transfer (FRET) in WS2/hBN/MoSe2 heterostructure, probed by both steady-state and time-resolved optical spectroscopy. We clarified the evolution behavior of the electron-hole pairs and free electrons from the trions, that is, ∼59.9% of the electron-hole pairs could transfer into MoSe2 by FRET channels (∼38 ps) while the free electrons accumulate at the WS2/hBN interface to photogate MoSe2. This study presents a clear picture of the FRET process in two-dimensional transition-metal dichalcogenides' heterojunctions, which establishes the scientific foundation for developing the related heterojunction optoelectronic devices.

Trion

10.1021/acsnano.0c05447

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Citations (36)

Optical limiting in a periodic materials with relaxational nonlinearity

Optics Express (2009)

Xue Liu Joseph W. Haus M. S. Shahriar

We numerically investigate counter-propagating beams in a one-dimensionally, periodic structure with non-instantaneous Kerr nonlinearity for the design of efficient optical limiters. The performance of the Photonic Band Gap optical limiter with different response times is compared with the instantaneous case. Dynamic range and the cutoff intensity can be improved over a range of relaxation times.

Limiter

Limiting

Cut-off

Self-phase modulation

Cutoff frequency

10.1364/oe.17.002696

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Citations (11)

Multifunctional Ta4C3Tx MXene/HTPP - PBS composites with multi cross-linking systems to cope with complex nuclear environments

Journal of Alloys and Compounds (2024)

Xue Liu Jianguo Deng Fu‐Han Mai Xin Li Guohong Pu

10.1016/j.jallcom.2024.175734

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Citations (1)

Planar Hall effect in triply degenerate semimetal trigonal layered PtBi2

Physical review. B./Physical review. B (2024)

Ankang Zhu Zheng Chen Minglong Han Xue Liu Xuegang Chen

Trigonal crystal system

10.1103/physrevb.110.125148

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The anomalous Hall effect in the epitaxial-grown semiconducting CuCo2O4 thin film

AIP Advances (2024)

Xianghao Ji Biao Zheng Mingzhu Xue Xue Liu Wenshuai Gao

The high-quality inverse spinel CuCo2O4 thin films are epitaxially grown on (001) MgAl2O4 substrates by radio frequency magnetron sputtering. The electrical transport properties exhibit typical semiconducting characteristics, accompanying the enhancement of resistivity with the thinning of CuCo2O4 thickness. The transport properties could be well understood by the Mott variable range hopping model. The anomalous Hall effect with a clear hysteresis loop is observed below 100 K, indicating the existence of out-of-plane magnetization in the epitaxial-grown CuCo2O4 films. In addition, the negative magnetoresistance at low temperature reverses to the positive magnetoresistance (≥100 K), which is related to the changes from the decrease in spin/carrier scattering under the magnetic field at low temperature to the enhancement of carrier deflection due to the conventional Lorenz force (≥100 K). The observed physical properties are closely related to the orbital occupation of Cu ion in CuCo2O4 films, which is a significant difference compared to that of documented metallic NiCo2O4. This work is a good comprehensive study of inverse spinel oxide thin films.

10.1063/5.0217422

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Why are we still in need for novel anti-obesity medications?

The Lancet Regional Health - Europe (2024)

Aaron Novikoff Gerald Grandl Xue Liu Timo D. Müller

Anti obesity

10.1016/j.lanepe.2024.101098

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Citations (1)

Controlled Sixfold Symmetric Exfoliation of Oriented MoS₂ Monolayers by Coulomb Force

Advanced Materials Interfaces (2024)

Sheng Liu Chee Fai Fong Xue Liu Beng Hau Tan Qingyun Zeng

Abstract Atoms, molecules, and nanoparticles can be spatially manipulated by an atomic force microscopy (AFM) tip, through van der Waals (vdW) and/or Coulomb forces. These point‐to‐point manipulations are highly accurate at nanoscale, facilitating the construction and modification of nanostructures. Nevertheless, it is difficult to manipulate 2D layers in vdW crystals by an AFM tip, because the tip‐induced attractive force is usually insufficient to outcompete the interlaminar vdW forces. Herein, manipulation of the surface layers on a MoS 2 single crystal by a conductive AFM tip is successfully reported. By applying a bias between the tip and MoS 2 , the Coulomb attractive force allows the topmost MoS 2 layers to be picked up. These exfoliated layers are deformed into micron‐sized bubbles with sixfold symmetry, which are composed of high‐quality monolayers and visually reflecting the hexagonal lattice orientation. The underlying mechanisms of the sixfold symmetric exfoliation and the formation of monolayers are discussed by in situ monitoring of the tunneling volt‐ampere characteristics and simulation of the force distribution. The findings open a new route to obtain high‐quality transition metal dichalcogenide (TMD) monolayers and their derived nanostructures on the surface of TMD single crystals for optoelectronic and photonic device applications.

Electrostatic force microscope

Hexagonal Lattice

Exfoliation joint

Crystal (programming language)

10.1002/admi.202300580

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Optimal color selection for root-polynomial color correction

Long Ma Xue Liu

The characterization of a set of target sample can be obtained from a specific sample set. The precision of the model largely depends on the number of the characterization samples and the number of colors. In this paper, a sample selection method combining the third-order root polynomial color correction(RPCC) model is proposed. This method is named Maxmingfc, which is based on the Maxminc method proposed by Cheung et al. And takes GFC evaluation criteria as the criteria for selecting differences between samples, it can use fewer samples to obtain higher characterization model precision. This sample selection method is used to obtain characteristic models under different cameras for different training sample sets and test sample sets, and color difference is used for evaluation. Compared with Hardeberg, Maxminc, Maxmins, Maxsums and Maxsumc methods, the sample selection method of Maxmingfc can obtain the more accurate characterization model, which is superior to other existing sample selection methods.

Sample (material)

Characterization

Color difference

Root (linguistics)

10.1117/12.2579640

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