NMR Imaging of the Soliton Lattice Profile in the Spin-Peierls CompoundCuGeO3

1998/12/22 by M. Horvatic, M. Horvatić, Y. Fagot‐Révurat +4 · 2 citations
Physics and Astronomy · #Advanced Condensed Matter Physics #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #cond-mat.str-el

paper · pdf · doi:10.1103/physrevlett.83.420

published as Phys. Rev. Lett. 83, (1999), pp.420-3 · 3 pages, 4 eps figures, RevTeX, submitted to Physical Review Letter

arxiv created 1998/12/22 · openalex publication_date 1999/07/12 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

In the spin-Peierls compound CuGeO₃, the commensurate-incommensurate transition concerning the modulation of atomic position and the local spin polarization is fully monitored (at T\phantom\rule0ex0ex=\phantom\rule0ex0ex4K \ensuremath≃ zero- T limit) by the application of an external magnetic field (H) above a threshold value H_c\ensuremath≃13T. The solitonic profile of the spin polarization, as well as its absolute magnitude, has been precisely imaged from ⁶⁵Cu NMR line shapes obtained for h\phantom\rule0ex0ex=\phantom\rule0ex0ex(H\ensuremath-H_c)/H_c varying from 0.0015 to 1. This offers a unique possibility to test quantitatively the various numerical and analytical methods developed to solve a generic Hamiltonian in 1D physics, namely strongly interacting fermions in the presence of electron-phonon coupling at arbitrary band filling.

Citations

• A magnetic model for the incommensurate I phase of spin-Peierls systems

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