@article {933,
title = {Limits on Bose-Einstein condensation in confined solid He-4},
journal = {Physical Review B},
volume = {80},
number = {6},
year = {2009},
note = {492EXTimes Cited:0Cited References Count:37},
month = {08/01},
pages = {060504},
abstract = {We report neutron-scattering measurements of the Bose-Einstein condensate (BEC) fraction, n(0), in solid helium that has a large surface to volume (S/V) ratio. Rittner and Reppy observed large superfluid fractions, rho(S)/rho, in large S/V samples with rho(S)/rho approximately proportional to S/V, up to rho(S)/rho=20\% at S/V=150 cm(-1). Our goal is to reveal whether there is BEC associated with these large rho(S)/rho. Our solid volume is 100 cm(3) of commercial grade helium at 41 bars pressure (T-c similar or equal to 200 mK) in a cell that has S/V=40 cm(-1) that cannot be quenched rapidly. We find no evidence for BEC or algebraic off diagonal long-range order with n(0)=0.0 +/- 0.3\% at 65 mK.},
keywords = {bose-einstein condensation, neutron diffraction, phase, solid helium, state, superfluidity, supersolid helium, transition},
isbn = {1098-0121},
doi = {10.1103/Physrevb.80.060504},
url = {://000269638800013},
author = {Diallo, S. O. and Azuah, R. T. and Kirichek, O. and Taylor, J. W. and Glyde, H. R.}
}