Nearly frictionless transport of glassy solid helium at low temperature regime

3He Impurities in Nearly Frictionless Transport of Solid 4He at Low Temperatures

“…the ability to transport without resistance) as well as a change of the shear modulus of solid 4 He have recently been observed at low temperatures, with a similar dependence on annealing and on 3 He concentration. [1] As remarked in ref.…”

“…[2]: "Why small concentrations of 3 He produce large effects remains an open question" is the newest puzzle about the role of 3 He impurities. Meanwhile it was suggested [3] that the quenched-in glassy phase in solid helium is the most likely origin for superfluidity of solid 4 He. We have investigated the almost frictionless transport of (locally glassy) solid helium in the very low temperature regime using a verified model.…”

“…[4,[11][12][13] Phenomena such as shear thinning (i.e. the higher the shear rate is, the smaller is the flow resistance) and 'rejuvenation' are common when shear flow is imposed.…”

“…We have investigated the almost frictionless transport of (locally glassy) solid helium in the very low temperature regime using a verified model. [4] In this paper we shall further study effects of 3 He impurities on the nearly frictionless transport of glassy solid helium ( 4 He) at low temperatures. The latter was seldom considered in previous works about the possible superglass [5] and/or quantum glass states.…”

“…Herein we shall consider the influence of 3 He concentration upon the nearly frictionless transport of (locally glassy) solid 4 He at low temperatures in micropores which have radius-or transverse-corrugations along the cross-section. The glassy 4 He is treated as a shear-thinning material.…”