Bose glass state in bulk (Nd,Eu,Gd)Ba2Cu3O x with a high irreversibility field
Bose glass state in bulk (Nd,Eu,Gd)Ba2Cu3O x with a high irreversibility field
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块状玻色玻璃态 (Nd,Eu,Gd)Ba2Cu3O x 具有高不可逆场
DOI：
10.1103/physrevb.69.214522
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发表时间：
2004
影响因子：
3.7
通讯作者：
K. Noto
中科院分区：
文献类型：
--
作者：
S. Awaji;N. Isono;Kazuo Watanabe;M. Murakami;M. Muralidhar;N. Koshizuka;K. Noto
(NEG123)块体显示出高不可逆性。为了阐明高不可逆场的起源，研究了具有高不可逆场的NEG123块体在高磁场、温度和场角下的输运特性。我们发现，角度相关电阻率出现下降，源于沿轴的相关无序。此外，通过对玻璃化转变温度和指数的详细分析，观察了周围的玻色玻璃相。因此，玻色玻璃态对于实现高不可逆场起着重要作用。这表明沿轴相关的新的有效钉扎中心是造成高不可逆场的原因。
(NEG123) bulk shows the high irreversibility properties. In order to clarify the origin of high irreversibility fields, the transport properties of NEG123 bulk with the high irreversibility field were investigated against high magnetic fields, temperatures, and field angles. We found that a dip in the angular dependent resistivity appears at, originated to the correlated disorder along theaxis. In addition, the Bose glass phase was observed aroundby the detailed analysis of the glass transition temperature and exponent. Therefore the Bose glass state plays an important role for realization of the high irreversibility field. It is suggested that new effective pinning centers correlated along theaxis are responsible for the high irreversibility field.