Quantum Phase Transition in Quasi-One-Dimensional [Formula presented]

Z. Q. Mao, T. He, M. M. Rosario, K. D. Nelson, D. Okuno, B. Ueland, I. G. Deac, P. Schiffer, Y. Liu, R. J. Cava

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We report the first systematic study of the electrical transport and magnetic properties of [Formula presented], which has a quasi-one-dimensional (quasi-1D) hollandite structure. We show that [Formula presented] 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.

Original languageEnglish (US)
Number of pages1
JournalPhysical review letters
Issue number18
StatePublished - Jan 1 2003

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Mao, Z. Q., He, T., Rosario, M. M., Nelson, K. D., Okuno, D., Ueland, B., Deac, I. G., Schiffer, P., Liu, Y., & Cava, R. J. (2003). Quantum Phase Transition in Quasi-One-Dimensional [Formula presented] . Physical review letters, 90(18). https://doi.org/10.1103/PhysRevLett.90.186601