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Updated: Jan 13, 2026
Characterization of Ultra-fine Grained and Nanocrystalline Materials Using Transmission Kikuchi Diffraction
Published on: April 1, 2017
Many-body interference in kagome crystals
Chunyu Guo1, Kaize Wang2, Ling Zhang2
1Max Planck Institute for the Structure and Dynamics of Matter, Hamburg, Germany. chunyu.guo@mpsd.mpg.de.
Researchers discovered coherent charge transport in the normal state of the kagome metal CsV3Sb5. This collective electronic behavior, observed via magnetoresistance oscillations, occurs without superconductivity, offering new insights into correlated electron systems.
Area of Science:
- Condensed Matter Physics
- Materials Science
Background:
- Collective electron behavior drives emergent phenomena in metals.
- Coherent charge transport is typically observed in superconductors due to Cooper pairs.
Purpose of the Study:
- To investigate coherent charge transport in the normal state of the kagome metal CsV3Sb5.
- To identify distinct collective electronic states beyond superconductivity.
Main Methods:
- Experimental observation of magnetoresistance oscillations in mesoscopic crystalline pillars of CsV3Sb5.
- Application of in-plane magnetic fields to probe charge transport.
- Analysis of oscillation periodicity related to magnetic flux quanta (h/e) and interlayer Aharonov-Bohm interference.
Main Results:
- Evidence for coherent charge transport in the normal state of CsV3Sb5.
- Non-analytic angular dependence with discrete oscillation frequency transitions indicates cooperative behavior.
- Coherent transport persists beyond the single-particle mean free path, suggesting long-range order.
Conclusions:
- CsV3Sb5 exhibits a distinct collective electronic state in its normal phase.
- The findings challenge conventional models by demonstrating long-range coherent transport without superconductivity.
- This kagome metal serves as a novel platform for exploring coherence in correlated electron systems.
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