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25 April 2024 |
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Spin-Peierls transition in TiPO$_4$ | J. M. Law
; C. Hoch
; R. Glaum
; I. Heinmaa
; R. Stern
; J. Kang
; C. Lee
; M.-H. Whangbo
; R. K. Kremer
; | Date: |
26 Apr 2011 | Abstract: | We investigated the magnetic and structural properties of the quasi-one
dimensional 3$d^1$-quantum chain system TiPO$_4$ ($J sim$ 965 K) by magnetic
susceptibility, heat capacity, ESR, x-ray diffraction, NMR measurements, and by
density functional calculations. TiPO$_4$ undergoes two magnetostructural phase
transitions, one at 111 K and the other at 74 K. Below 74 K, NMR detects two
different $^{31}$P signals and the magnetic susceptibility vanishes, while DFT
calculations evidence a bond alternation of the Ti...Ti distances within each
chain. Thus, the 74 K phase transition is a spin-Peierls transition which
evolves from an incommensurate phase existing between 111 K and 74 K. | Source: | arXiv, 1104.4922 | Services: | Forum | Review | PDF | Favorites |
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