Issue |
Europhys. Lett.
Volume 46, Number 1, April I 1999
|
|
---|---|---|
Page(s) | 75 - 81 | |
Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
DOI | https://doi.org/10.1209/epl/i1999-00565-4 | |
Published online | 01 September 2002 |
1D quantum transport in the even-chain spin-ladder compound
and
Laboratorium voor Vaste-Stoffysica en Magnetisme,
Katholieke Universiteit Leuven
Celestijnenlaan 200 D - B-3001 Leuven, Belgium
Received:
23
February
1998
Accepted:
14
January
1999
The temperature dependence of the resistivity
of the novel
ladder compound under hydrostatic
pressure of up to 8 GPa has been explained by assuming that the
relevant length scale for electrical transport is given by the
magnetic correlation length related to the opening of a spin-gap in a
1D even-chain spin-ladder (1D-SL). The pressure dependence of the gap
was extracted by applying this model to
data obtained at
different pressures. The
dependence of the underdoped
cuprate
demonstrates a remarkable scaling with the
of the 1D-SL compound
.
This scaling implies that underdoped cuprates at
are in the 1D regime and their pseudo-gap below T* is the spin-gap
in the even-chain 1D-SL formed at
in these materials.
PACS: 75.10.Jm – Quantized spin models / 74.25.Fy – Transport properties (electric and thermal conductivity, thermoelectric effects, etc.) / 74.20.Mn – Nonconventional mechanisms (spin fluctuations, polarons and bipolarons, resonating valence bond model, anyon mechanism, marginal Fermi liquid, Luttinger liquid, etc.)
© EDP Sciences, 1999
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