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10 papers
Electric field tunable multi-state tunnel magnetoresistances in 2D van der Waals magnetic heterojunctions
X. X. Ren, B. Liu, Xian Zhang +2
Magnetic tunnel junction (MTJ) based on van der Waals (vdW) magnetic layers has been found to present excellent tunneling magnetoresistance (TMR) property, which has great potentia…
Non-Linear behavior of Raman Linewidth of 1-3 Layer WSe2
Elham Easy, Jeric Hernandez, Tseng-Ming Chou +1
In recent years, Raman spectroscopy of two-dimensional (2D) materials has been conducted. However, only a small portion of those studies note the full width half maximum (FWHM) of…
On the Role of Crystal Defects on the Lattice Thermal Conductivity of Monolayer WSe2 (P63/mmc) Thermoelectric Materials by DFT Calculation
Yingtao Wang, Xian Zhang
As the energy problem becomes more prominent, researches on thermoelectric (TE) materials have deepened over the past few decades. Low thermal conductivity enables thermoelectric m…
Very High Interfacial Thermal Conductance in Fully hBN-Encapsulated MoS2 van der Waals Heterostructure
Fan Ye, Qingchang Liu, Baoxing Xu +2
We report experimental and computational studies of thermal transport properties in hexagonal boron nitride (hBN) encapsulated molybdenum disulfide (MoS2) structure using refined o…
Thermal Conductivities and Interfacial Thermal Conductance of 1- to 3-Layer WSe
Elham Easy, Yuan Gao, Yingtao Wang +5
Atomically thin materials such as graphene and semiconducting transition metal dichalcogenides have attracted extensive interest in recent years, motivating investigation into mult…
Excitons in two-dimensional materials
Xiaoyang Zheng, Xian Zhang
Because of the reduced dielectric screening and enhanced Coulomb interactions, two-dimensional (2D) materials like phosphorene and transition metal dichalcogenides (TMDs) exhibit s…
Measurement of the optical dielectric function of transition metal dichalcogenide monolayers: MoS2, MoSe2, WS2 and WSe2
Yilei Li, Alexey Chernikov, Xian Zhang +7
We report a determination of the complex in-plane dielectric function of monolayers of four transition metal dichalcogenides: MoS2, MoSe2, WS2 and WSe2, for photon energies from 1.…
Multiple Hot-Carrier Collection in Photo-Excited Graphene Moire Superlattices
Sanfeng Wu, Lei Wang, You Lai +10
In conventional light harvesting devices, the absorption of a single photon only excites one electron, which sets the standard limit of power-conversion efficiency, such as the Sho…
Measurement of lateral and interfacial thermal conductivity of single- and bi-layer MoS2 and MoSe2 using refined optothermal Raman technique
Xian Zhang, Dezheng Sun, Yilei Li +6
Atomically thin materials such as graphene and semiconducting transition metal dichalcogenides (TMDCs) have attracted extensive interest in recent years, motivating investigation i…
Multi-terminal electrical transport measurements of molybdenum disulphide using van der Waals heterostructure device platform
Xu Cui, Gwan-Hyoung Lee, Young Duck Kim +15
Atomically thin two-dimensional (2D) semiconductors such as molybdenum disulphide (MoS2) hold great promise in electrical, optical, and mechanical devices and display novel physica…