NNU-SULI Thermal Energy Research Center(NSTER)Center for Quantum Transport and Thermal Energy Science(CQTES) School of Physics and Technology Nanjing Normal University Nanjing 210023 China;
NNU-SULI Thermal Energy Research Center(NSTER)Center for Quantum Transport and Thermal Energy Science(CQTES) School of Physics and Technology Nanjing Normal University Nanjing 210023 China;
NNU-SULI Thermal Energy Research Center(NSTER)Center for Quantum Transport and Thermal Energy Science(CQTES) School of Physics and Technology Nanjing Normal University Nanjing 210023 China;
International Center for Quantum Design of Functional Materials(ICQD) Hefei National Laboratory for Physical Sciences at Microscale and Synergetic Innovation Center of Quantum Information and Quantum Physics University of Science and Technology of China Hefei 230026 China;
flat magnon bands; kagome lattice; ferromagnet; Dzyaloshinskii-Moriya interaction;