Common energy scale for magnetism and superconductivity in underdoped cuprates: a MuSR investigation of (CaLa)(BaLa)CuO

Preprint

3 March 2002

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0110346

Abstract

We characterize the spontaneous magnetic field, and determine the associated temperature Tg, in the superconducting state of Ca(x)La(1-x)Ba(1.75-x)La(0.25+x)Cu(3)O(y) using zero and longitudinal field MuSR measurements for various values of x and y. Our major findings are: (I) Tg and Tc are controlled by the same energy scale, (II) the phase separation between hole poor and hole rich regions is a microscopic one, and (III) spontaneous magnetic fields appear gradually with no moment size evolution.

Keywords

SPONTANEOUS MAGNETIC
UNDERDOPED CUPRATES
SUPERCONDUCTIVITY
MAGNETIC FIELDS
COMMON ENERGY
ENERGY SCALE
EVOLUTION
MUSR

All Related Versions

Version 1, 2001-10-17, ArXiv
Version 2, 2002-03-03, ArXiv
Published version: Physical Review Letters, 88 (13), 137003.

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