Mao ZQ, He T, Rosario MM, Nelson KD, Okuno D, Ueland B, Deac IG, Schiffer P, Liu Y, Cava RJ. Quantum phase transition in quasi-one-dimensional BaRu6O12.
Phys Rev Lett 2003;
90:186601. [PMID:
12786033 DOI:
10.1103/physrevlett.90.186601]
[Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2002] [Indexed: 05/24/2023]
Abstract
We report the first systematic study of the electrical transport and magnetic properties of BaRu6O12, which has a quasi-one-dimensional (quasi-1D) hollandite structure. We show that BaRu6O12 is quasi-1D electronically as well. Its physical properties were found to be extremely sensitive to disorder. Furthermore, a transition from being metallic with a resistance drop around 2 K to being weakly insulating as the applied magnetic field was increased was also found. We propose that these two features are related to the possible presence of a quantum phase transition in this material system.
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