Liquid-Solid Transition and Phase Diagram of ^4He Confined in Nanoporous Glass

Autor:	Yamamoto, Keiichi, Shibayama, Yoshiyuki, Shirahama, Keiya
Rok vydání:	2007
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Strongly Correlated Electrons
Druh dokumentu:	Working Paper
DOI:	10.1143/JPSJ.77.013601
Popis:	We have studied the liquid - solid (L-S) phase transition of ^4He confined in nanoporous glass, which has interconnected nanopores of 2.5 nm in diameter. The L-S boundary is determined by the measurements of pressure and thermal response during slow cooling and warming. Below 1 K, the freezing pressure is elevated to 1.2 MPa from the bulk freezing pressure, and appears to be independent of temperature. The T-independent L-S boundary implies the existence of a localized Bose-Einstein condensation state, in which long-range superfluid coherence is destroyed by narrowness of the nanopores and random potential. Comment: 4 pages, 4 figures, submitted to J. Phys. Soc. Jpn
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0707.2683 Zobrazit plný text záznamu View this record from Arxiv