Diagonal antiferromagnetic easy axis in lightly hole doped [formula presented]

A. Jánossy, T. Fehér, Andreas Erb

Research output: Contribution to journalArticle

Abstract

Hole induced changes in the antiferromagnetic structure of a lightly Ca doped [Formula presented] copper oxide single crystal with [Formula presented] is investigated by [Formula presented] electron spin resonance. Holes do not localize to [Formula presented] ions above 2.5 K since the charge distribution and spin susceptibility next to the [Formula presented] are independent of temperature. Both hole doped and pristine crystals are magnetically twinned with an external magnetic field dependent antiferromagnetic domain structure. Unlike the undoped crystal, where the easy magnetic axis is along [100] at all temperatures, the easy direction in the hole doped crystal is along the [110] diagonal at low temperatures and changes gradually to the [100] direction between 10 and 100 K. The transition is tentatively attributed to a magnetic anisotropy introduced by hole ordering.

Original languageEnglish
JournalPhysical Review Letters
Volume91
Issue number17
DOIs
Publication statusPublished - Jan 1 2003

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doped crystals
copper oxides
charge distribution
crystals
electron paramagnetic resonance
magnetic permeability
anisotropy
temperature
single crystals
magnetic fields
ions

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Diagonal antiferromagnetic easy axis in lightly hole doped [formula presented] . / Jánossy, A.; Fehér, T.; Erb, Andreas.

In: Physical Review Letters, Vol. 91, No. 17, 01.01.2003.

Research output: Contribution to journalArticle

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