2001/10/18 by Sergej Flach, S. Flach, Andrey E. Miroshnichenko +3 · 3 citations
Computer Science · Physics and Astronomy · #Quantum Computing Algorithms and Architecture #Quantum and electron transport phenomena #Quantum many-body systems #cond-mat.soft #quant-ph
paper · pdf · doi:10.1103/physrevb.65.104438
published as Phys. Rev. B 65, 104438 (2002) · 7 pages, 7 figures
arxiv created 2001/10/18 · openalex publication_date 2002/03/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We consider s=1/2 spins in the presence of a constant magnetic field in the z direction and an ac magnetic field in the x\ensuremath-z plane. A nonzero dc magnetization component in the y direction is a result of broken symmetries. A pairwise interaction between two spins is shown to resonantly increase the induced magnetization by one order of magnitude. We discuss the mechanism of this enhancement, which is due to additional avoided crossings in the level structure of the system.