High-pressureV51NMR study of the magnetic phase diagram and metal-insulator transition in quasi-one-dimensionalβ-Na0.33V2O5
High-pressureV51NMR study of the magnetic phase diagram and metal-insulator transition in quasi-one-dimensionalβ-Na0.33V2O5
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准一维β-Na0.33V2O5磁相图和金属-绝缘体转变的高压V51NMR研究
DOI：
10.1103/physrevb.79.081101
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发表时间：
2009
影响因子：
3.7
通讯作者：
Y. Ueda
中科院分区：
文献类型：
--
作者：
T. Suzuki;I. Yamauchi;Y. Shimizu;M. Itoh;N. Takeshita;C. Terakura;H. Takagi;Y. Tokura;T. Yamauchi;Y. Ueda
用改进的Bridgman对顶砧在准一维导体中进行了高达9 GPa的高压核磁共振测量，结果表明压力诱导的超导电性来自电荷有序态。我们确定了磁性和钠序转变温度，并构建了金属-绝缘体转变的相图。我们证明，反铁磁长程有序相在达到电荷有序完全熔化的临界压力时仍然存在。局域自旋磁化率表现出明显的位置依赖性和从Curie-Weiss一维液体到费米液体金属的交叉。
High-pressureNMR measurements are conducted up to 9 GPa using a modified Bridgman anvil cell in a quasi-one-dimensional conductorwhich shows pressure-induced superconductivity from a charge order state. We determine the magnetic and Na order transition temperatures and construct the phase diagram of the metal-insulator transition in. We demonstrate that the antiferromagnetic long-range order phase persists up to a critical pressurewhere the charge order completely melts. The local spin susceptibility shows distinct site dependence and a crossover from a Curie-Weiss one-dimensional liquid to a Fermi-liquid metal with enhanced density of states above.