Spin-orbital effects in magnetized quantum wires and spin chains

2007/09/30 by Suhas Gangadharaiah, Jianmin Sun, Oleg A. Starykh
Physics and Astronomy · #Anisotropy #Condensed matter physics #Electron #Ferromagnetism #Magnetic field #Magnetic properties of thin films #Physics #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Quantum mechanics #Spin (aerodynamics) #Spin Hall effect #Spin polarization #Spin wave #Spin–orbit interaction #Zeeman effect #Zero field splitting #cond-mat.mes-hall #cond-mat.str-el

paper · pdf · doi:10.1103/physrevb.78.054436

published as Phys. Rev. B 78, 054436 (2008) · 18 pages, 2 figures; (v2) 23 pages, 5 figures, Added modified and detailed analysis of the phase diagram; (v3) published version, few misprints corrected

openalex publication_date 2008/08/25 · arxiv created 2008/09/05 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We present analysis of the interacting quantum wire problem in the presence of magnetic field and spin-orbital interaction. We show that an interesting interplay of Zeeman and spin-orbit terms, facilitated by the electron-electron interaction, results in the spin-density wave (SDW) state when the magnetic-field and spin-orbit axes are orthogonal. We show that this instability is enhanced in a closely related problem of Heisenberg spin chain with asymmetric uniform Dzyaloshinskii-Moriya (DM) interaction. Magnetic field in the direction perpendicular to the DM anisotropy axis results in staggered long-range magnetic order along the orthogonal to the applied field direction. We explore consequences of the uniform DM interaction for the electron-spin-resonance (ESR) measurements, and point out that they provide way to probe right- and left-moving excitations of the spin chain separately.

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