Quantum interference in superposed lattices
Quantum interference in superposed lattices
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叠加晶格中的量子干涉
DOI:
10.1073/pnas.2315787121
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发表时间:
2024
期刊:
影响因子:
--
通讯作者:
Chen, Hua
中科院分区:
文献类型:
--
作者:
Feng, Yejun;Wang, Yishu;Rosenbaum, T. F.;Littlewood, P. B.;Chen, Hua
Charge transport in solids at low temperature reveals a material’s mesoscopic properties and structure. Under a magnetic field, Shubnikov–de Haas (SdH) oscillations inform complex quantum transport phenomena that are not limited by the ground state characteristics and have facilitated extensive explorations of quantum and topological interest in two- and three-dimensional materials. Here, in elemental metal Cr with two incommensurately superposed lattices of ions and a spin-density-wave ground state, we reveal that the phases of several low-frequency SdH oscillations inandare no longer identical but opposite. These relationships contrast with the SdH oscillations from normal cyclotron orbits that maintain identical phases betweenand. We trace the origin of the low-frequency SdH oscillations to quantum interference effects arising from the incommensurate orbits of Cr’s superposed reciprocal lattices and explain the observed-phase shift by the reconnection of anisotropic joint open and closed orbits.
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