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??????????????§à??????? ?????w--??N??????????|?B ?????e????????W???§à???T?l?F????N?? ????????|?B???@?N???w???§Ô????w(superfluid)?? ???|?? ????????????Q?øI???w(supersolid)?? ????X????????w?????|??????????B?r ????l???????????????????@????????|? ????l????4He???B???@?N???§Ô????w???|??? ???w?????????B??????w???o??????????? ??2004??1??15???????s?I????e?????? ?e????????W???§à???T????[???????M??? ? ??????4He?b??????????????????(??N ?????Q??Vycor)???????63????????????s?? 2.176 K???????r4He?D????B???b?§Û?B4He ??Vycor?????c?????????B?K???????????D?? Vycor???????????????D?????????l???cVycor ????????B4He??D??T??(??????|??)?_???????????????l?F????????????0.175 K ?r???D??T??????p??? ????¨¿?B4He?????S???????D????? ??N??B4He??????????????SVycor?????D??? ?????@?NVycor????????§Þ?????????¦·????? ?????r??B4He?????????w?B??? ?§à???TKim??Chan?????????????M?????w ???^????????y????@???^????Y????????? ?????Alberta??W??John Beamish?t?J?ï… ?@???? ????§²??h????????§»???????J????S????§» ??B??4He?????Vycor??????????????????? ?B??4He???c????????D???????? Kim??Chan??? ?@????????? ?????? E. Kim and M. H. W. Chan, Probable observation of a supersolid helium phase, Nature 427, 225 (2004). ?????Tsong-Shin Lin, tsongshin_lin@hotmail.com ?D?d??http://www.sciscape.org |
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