PIRSA:17060037 Conference Condensed Matter

DOI10.48660/17060037

Conference/School: International Workshop on Quantum Spin Ice

Pomaranski, D. (2017). Low temperature specific heat characterization of the geometrically frustrated magnetic compound Yb2Ti2O7. Perimeter Institute. https://pirsa.org/17060037

Pomaranski, David. Low temperature specific heat characterization of the geometrically frustrated magnetic compound Yb2Ti2O7. Perimeter Institute, Jun. 07, 2017, https://pirsa.org/17060037 

@misc{ pirsa_PIRSA:17060037,
  doi = {10.48660/17060037},
  url = {https://pirsa.org/17060037},
  author = {Pomaranski, David},
  keywords = {Condensed Matter},
  language = {en},
  title = {Low temperature specific heat characterization of the geometrically frustrated magnetic compound Yb2Ti2O7},
  publisher = {Perimeter Institute},
  year = {2017},
  month = {jun},
  note = {PIRSA:17060037 see, \url{https://pirsa.org}}
}

Abstract

Yb2Ti2O7 is a geometrically frustrated magnet that proposed as a quantum spin liquid (QSL) candidate. This would have an emergent U(1) gauge structure, support emergent quasiparticles and a continuum of gapless spin excitations. A cubic power law dependence is expected in the specific heat down to zero temperature. [1,2] Identifying a power law is hindered by the presence of a sharp transition at 0.26K and a Schottky anomaly due to nuclear hyperfine interactions below 0.1K. [3] By preparing an isotopically enriched sample with 174-Yb and 48-Ti, we suppress the Schottky anomaly. This allows us to extend the specific heat to lower temperatures, revealing a polynomial behavior to at least 0.05 K that is suggestive of a quantum spin liquid.

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