تقرير
Quantum interference in superposed lattices
العنوان: | Quantum interference in superposed lattices |
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المؤلفون: | Feng, Yejun, Wang, Yishu, Rosenbaum, T. F., Littlewood, P. B., Chen, Hua |
المصدر: | Proc. Nat. Acad. Sci. USA 121, e2315787121 (2024) |
سنة النشر: | 2023 |
المجموعة: | Condensed Matter |
مصطلحات موضوعية: | Condensed Matter - Strongly Correlated Electrons, Condensed Matter - Mesoscale and Nanoscale Physics |
الوصف: | 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. 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 in sigma_xx (rho_xx) and sigma_yy (rho_yy) are opposite, contrast with oscillations from normal cyclotron orbits that maintain identical phases. 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 pi-phase shift by the reconnection of anisotropic joint open and closed orbits. |
نوع الوثيقة: | Working Paper |
URL الوصول: | http://arxiv.org/abs/2309.04059 |
رقم الأكسشن: | edsarx.2309.04059 |
قاعدة البيانات: | arXiv |
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