2010/07/31 by Jun Goryo, Nobuki Maeda · 7 citations
Physics and Astronomy · #Advanced Condensed Matter Physics #Antiferromagnetism #Condensed matter physics #Degenerate energy levels #Diamagnetism #Hexagonal lattice #Magnetic field #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Topological Materials and Phenomena #Zeeman effect #cond-mat.mes-hall #cond-mat.str-el
paper · pdf · doi:10.1143/jpsj.80.044707
published in Journal of the Physical Society of Japan 80(4), 044707 (Physical Society of Japan) · 7 pages, the final version will be published in J. Phys. Soc. Jpn
arxiv created 2011/02/14 · openalex publication_date 2011/04/12 · arxiv updated 2011/04/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We investigate the magnetic response in the quantized spin Hall (SH) phase of layered-honeycomb lattice system with intrinsic spin-orbit coupling lambdaSO and on-site Hubbard U. The response is characterized by a parameter g= 4 U a2 d / 3, where a and d are the lattice constant and interlayer distance, respectively. When g< (sigmaxys2 mu)-1, where sigmaxys is the quantized spin Hall conductivity and mu is the magnetic permeability, the magnetic field inside the sample oscillates spatially. The oscillation vanishes in the non-interacting limit U -> 0. When g > (sigmaxys2 mu)-1, the system shows perfect diamagnetism, i.e., the Meissner effect occurs. We find that superlattice structure with large lattice constant is favorable to see these phenomena. We also point out that, as a result of Zeeman coupling, the topologically-protected helical edge states shows weak diamagnetism which is independent of the parameter g.