首页|Spin Resolved Zero-Line Modes in Minimally Twisted Bilayer Graphene from Exchange Field and Gate Voltage
Spin Resolved Zero-Line Modes in Minimally Twisted Bilayer Graphene from Exchange Field and Gate Voltage
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The reliance on spin-orbit coupling or strong magnetic fields has always posed significant challenges for the mass production and even laboratory realization of most topological materials.Valley-based topological zero-line modes have attracted widespread attention due to their substantial advantage of being initially realizable with just an external electric field.However,the uncontrollable nature of electrode alignment and precise fabrication has greatly hindered the advancement in this field.By utilizing minimally twisted bilayer graphene and introducing exchange fields from magnetic substrates,we successfully realize a spin-resolved,electrode-free topological zero-line mode.Further integration of electrodes that do not require alignment considerations significantly enhances the tunability of the system's band structure.Our approach offers a promising new support for the dazzling potential of topological zero-line mode in the realm of low-energy-consumption electronics.
Sanyi You、Jiaqi An、Zhenhua Qiao
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International Centre for Quantum Design of Functional Materials,CAS Key Laboratory of Strongly Coupled Quantum Matter Physics,and Department of Physics,University of Science and Technology of China,Hefei 230026,China
Hefei National Laboratory,University of Science and Technology of China,Hefei 230088,China
National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNatural Science Basic Research Program of Shanxi ProvinceAnhui Initiative in Quantum Information TechnologiesInnovation Program for Quantum Science and Technology
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