Quantum melting of the hole crystal in the spin ladder of Sr14-xCaxCu24O41

A. Rusydi, P. Abbamonte, H. Eisaki, Y. Fujimaki, G. Blumberg, S. Uchida, G. A. Sawatzky

Research output: Contribution to journalArticlepeer-review


We have used resonant soft x-ray scattering to study the effects of discommensuration on the hole Wigner crystal (HC) in the spin ladder Sr14-xCaxCu24O41 (SCCO). As the hole density is varied the HC forms only with the commensurate wave vectors LL=1/5 and LL=1/3; for incommensurate values it "melts." A simple scaling between LL and temperature is observed, τ1/3/τ1/5=5/3, indicating an inverse relationship between the interaction strength and wavelength. Our results suggest that SCCO contains hole pairs that are crystallized through an interplay between lattice commensuration and Coulomb repulsion, reminiscent of the "pair density wave" scenario.

Original languageEnglish (US)
Article number016403
JournalPhysical review letters
Issue number1
StatePublished - 2006

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Quantum melting of the hole crystal in the spin ladder of Sr14-xCaxCu24O41'. Together they form a unique fingerprint.

Cite this