Volume-wise destruction of the antiferromagnetic Mott insulating state through quantum tuning.
- Frandsen BA Department of Physics, Columbia University, New York, New York 10027, USA.
- Liu L Department of Physics, Columbia University, New York, New York 10027, USA.
- Cheung SC Department of Physics, Columbia University, New York, New York 10027, USA.
- Guguchia Z Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute, CH-5232 Villigen, Switzerland.
- Khasanov R Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute, CH-5232 Villigen, Switzerland.
- Morenzoni E Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute, CH-5232 Villigen, Switzerland.
- Munsie TJ Department of Physics and Astronomy, McMaster University, Hamilton, Ontario, Canada L8S 4M1.
- Hallas AM Department of Physics and Astronomy, McMaster University, Hamilton, Ontario, Canada L8S 4M1.
- Wilson MN Department of Physics and Astronomy, McMaster University, Hamilton, Ontario, Canada L8S 4M1.
- Cai Y Department of Physics and Astronomy, McMaster University, Hamilton, Ontario, Canada L8S 4M1.
- Luke GM Department of Physics and Astronomy, McMaster University, Hamilton, Ontario, Canada L8S 4M1.
- Chen B Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
- Li W Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
- Jin C Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
- Ding C Department of Physics, Zhejiang University, Hangzhou 310027, China.
- Guo S Department of Physics, Zhejiang University, Hangzhou 310027, China.
- Ning F Department of Physics, Zhejiang University, Hangzhou 310027, China.
- Ito TU Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan.
- Higemoto W Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan.
- Billinge SJ Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, USA.
- Sakamoto S Department of Physics, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan.
- Fujimori A Department of Physics, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan.
- Murakami T Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo, Kyoto 615-8510, Japan.
- Kageyama H Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo, Kyoto 615-8510, Japan.
- Alonso JA Instituto de Ciencia de Materiales de Madrid (ICMM), CSIC, Madrid E-28049, Spain.
- Kotliar G Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA.
- Imada M Department of Applied Physics, University of Tokyo, 7-3-1 Hongo, Tokyo 113-8656, Japan.
- Uemura YJ Department of Physics, Columbia University, New York, New York 10027, USA.
- 2016-08-18
Published in:
- Nature communications. - 2016
English
RENiO3 (RE=rare-earth element) and V2O3 are archetypal Mott insulator systems. When tuned by chemical substitution (RENiO3) or pressure (V2O3), they exhibit a quantum phase transition (QPT) between an antiferromagnetic Mott insulating state and a paramagnetic metallic state. Because novel physics often appears near a Mott QPT, the details of this transition, such as whether it is first or second order, are important. Here, we demonstrate through muon spin relaxation/rotation (μSR) experiments that the QPT in RENiO3 and V2O3 is first order: the magnetically ordered volume fraction decreases to zero at the QPT, resulting in a broad region of intrinsic phase separation, while the ordered magnetic moment retains its full value until it is suddenly destroyed at the QPT. These findings bring to light a surprising universality of the pressure-driven Mott transition, revealing the importance of phase separation and calling for further investigation into the nature of quantum fluctuations underlying the transition.
- Language
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- English
- Open access status
- gold
- Identifiers
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- DOI 10.1038/ncomms12519
- PMID 27531192
- Persistent URL
- https://fredi.hepvs.ch/global/documents/25152
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