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Two-dimensional superconductivity in stripe-ordered La 1.6 − x Nd 0.4 Sr x CuO 4 single crystals

Two-dimensional superconductivity in stripe-ordered La 1.6 − x Nd 0.4 Sr x CuO 4 single crystals The dc and ac magnetizations of the stripe-ordered La 1.6 − x Nd 0.4 Sr x CuO 4 ( x = 0.10 , 0.15 , 0.18 ) single crystals have been studied systematically under different magnetic-field orientations. It is found that the dc magnetizations M for all the three different doped samples show two diamagnetic steps for H ∥ c , while there is only one for H ∥ a b . The real part M ′ of the ac magnetization is similar to that of the dc one and the imaginary part M ″ shows two peaks at the temperatures corresponding to the two steps of M ′ . For comparison, the dc magnetization of La 1.85 Sr 0.15 CuO 4 single crystal without static stripe phase has only one transition for H ∥ c . The results suggest that the anisotropic magnetic properties in La 1.6 − x Nd 0.4 Sr x CuO 4 are closely related to the decoupling between the CuO 2 planes by the static stripe order which causes a two-dimensional superconducting state in the system. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review B American Physical Society (APS)

Two-dimensional superconductivity in stripe-ordered La 1.6 − x Nd 0.4 Sr x CuO 4 single crystals

Physical Review B , Volume 77 (21) – Jun 1, 2008
5 pages

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References (28)

Publisher
American Physical Society (APS)
Copyright
Copyright © 2008 The American Physical Society
ISSN
1550-235X
DOI
10.1103/PhysRevB.77.214524
Publisher site
See Article on Publisher Site

Abstract

The dc and ac magnetizations of the stripe-ordered La 1.6 − x Nd 0.4 Sr x CuO 4 ( x = 0.10 , 0.15 , 0.18 ) single crystals have been studied systematically under different magnetic-field orientations. It is found that the dc magnetizations M for all the three different doped samples show two diamagnetic steps for H ∥ c , while there is only one for H ∥ a b . The real part M ′ of the ac magnetization is similar to that of the dc one and the imaginary part M ″ shows two peaks at the temperatures corresponding to the two steps of M ′ . For comparison, the dc magnetization of La 1.85 Sr 0.15 CuO 4 single crystal without static stripe phase has only one transition for H ∥ c . The results suggest that the anisotropic magnetic properties in La 1.6 − x Nd 0.4 Sr x CuO 4 are closely related to the decoupling between the CuO 2 planes by the static stripe order which causes a two-dimensional superconducting state in the system.

Journal

Physical Review BAmerican Physical Society (APS)

Published: Jun 1, 2008

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