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Meeting MS&T23: Materials Science & Technology
Symposium Emergent Materials Under Extremes and Decisive In Situ Characterizations
Presentation Title Pressure Driving Dual-layer Superconductivity in 4Hb-TaSe2 TMD
Author(s) Wenge Yang
On-Site Speaker (Planned) Wenge Yang
Abstract Scope High pressure has been playing a key role in advancing superconductivity research in promoting both more substances into superconductors, and critical temperature. Another routine is the 2D limit to monolayer. Transition metal dichalcogenide (TMD) 4Hb-TaSe2 has a natural heterogeneous structure with alternating stacking 1T-TaSe2 and 1H-TaSe2. Due to the enlarged T-T and H-H layer distance, the weak Van Der Waal interaction in this special TMD system makes the bulk sample behave like two monolayer TMD single crystals. Upon compression, the superconductivity competes with its intra-layered and inter-layer CDW order, which results in substantially and continually boosted superconductivity. The superconductivity in the individual layer responses differently to the charge transfer, and novel dual-layer superconductivity emerges when both CDW orders collapse. For the first time we demonstrate the dual monolayer-like superconducting behaviour in a bulk TMD materials, which offers a new direction to deepen our understanding of this interesting class of TMDs.


Capturing Laser Induced Dynamics of Materials via Single-Shot Ultrafast Transmission Electron Microscopy
HP-XAFS and Its Application to Topological Insulator Bi2Te3
In-situ Observations of the High Temperature Melting Behaviour of Ce-brannerite
In-situ Raman Studies on Synthesis and Oxidation of UC1-xNx
In-situ/Operando Characterization of Emerging Materials with MeV Ultrafast Electron Diffraction at SLAC National Accelerator Laboratory
In Situ Characterization and Modeling of Spent UO2 Fuel under Ion Irradiation
Irradiation Induced Structural and Thermal Conductivity Changes in Nuclear Fuels
Magnetic Scattering and Spectroscopy at High Pressures at APS and APS-U
Modulation of Structure-function Motifs in Optoelectronic Metal Halides Using High Pressure
Neutron Scattering for Studying Materials Under Extreme Conditions
Perspectives of IXS and NRS Studies in the APSU Era
Polar Magnets in High-Pressure Exotic Perovskites
Pressure-induced Non-monotonic Crossover of Steady Relaxation Dynamics in a Metallic Glass
Pressure Driving Dual-layer Superconductivity in 4Hb-TaSe2 TMD
Structural Manipulation of Ceramic Materials via Extreme Conditions
Will High-entropy Carbides Be Enabling Materials for Extreme Environments?

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