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Wu S, Basak R, Li W, Kim JW, Ryan PJ, Lu D, Hashimoto M, Nelson C, Acevedo-Esteves R, Haley SC, Analytis JG, He Y, Frano A, Birgeneau RJ. Discovery of Charge Order in the Transition Metal Dichalcogenide Fe_{x}NbS_{2}. Phys Rev Lett 2023; 131:186701. [PMID: 37977621 DOI: 10.1103/physrevlett.131.186701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 09/08/2023] [Indexed: 11/19/2023]
Abstract
The Fe intercalated transition metal dichalcogenide (TMD), Fe_{1/3}NbS_{2}, exhibits remarkable resistance switching properties and highly tunable spin ordering phases due to magnetic defects. We conduct synchrotron x-ray scattering measurements on both underintercalated (x=0.32) and overintercalated (x=0.35) samples. We discover a new charge order phase in the overintercalated sample, where the excess Fe atoms lead to a zigzag antiferromagnetic order. The agreement between the charge and magnetic ordering temperatures, as well as their intensity relationship, suggests a strong magnetoelastic coupling as the mechanism for the charge ordering. Our results reveal the first example of a charge order phase among the intercalated TMD family and demonstrate the ability to stabilize charge modulation by introducing electronic correlations, where the charge order is absent in bulk 2H-NbS_{2} compared to other pristine TMDs.
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Affiliation(s)
- Shan Wu
- Department of Physics, University of California Berkeley, California 94720, USA
- Material Sciences Division, Lawrence Berkeley National Lab, Berkeley, California 94720, USA
- Department of Physics, Santa Clara University, Santa Clara, California 95053, USA
| | - Rourav Basak
- Department of Physics, University of California San Diego, San Diego, California 92093, USA
| | - Wenxin Li
- Department of Applied Physics, Yale University, New Haven, Connecticut 06511, USA
| | - Jong-Woo Kim
- Advanced Photon Source, Argonne National Laboratories, Lemont, Illinois, USA
| | - Philip J Ryan
- Advanced Photon Source, Argonne National Laboratories, Lemont, Illinois, USA
| | - Donghui Lu
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Makoto Hashimoto
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Christie Nelson
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Raul Acevedo-Esteves
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Shannon C Haley
- Department of Physics, University of California Berkeley, California 94720, USA
| | - James G Analytis
- Department of Physics, University of California Berkeley, California 94720, USA
- CIFAR Quantum Materials, CIFAR, Toronto, Ontario M5G 1M1, Canada
| | - Yu He
- Department of Applied Physics, Yale University, New Haven, Connecticut 06511, USA
| | - Alex Frano
- Department of Physics, University of California San Diego, San Diego, California 92093, USA
| | - Robert J Birgeneau
- Department of Physics, University of California Berkeley, California 94720, USA
- Material Sciences Division, Lawrence Berkeley National Lab, Berkeley, California 94720, USA
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Shen Y, Sears J, Fabbris G, Weichselbaum A, Yin W, Zhao H, Mazzone DG, Miao H, Upton MH, Casa D, Acevedo-Esteves R, Nelson C, Barbour AM, Mazzoli C, Cao G, Dean MPM. Emergence of Spinons in Layered Trimer Iridate Ba_{4}Ir_{3}O_{10}. Phys Rev Lett 2022; 129:207201. [PMID: 36461990 DOI: 10.1103/physrevlett.129.207201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 10/17/2022] [Indexed: 06/17/2023]
Abstract
Spinons are well known as the elementary excitations of one-dimensional antiferromagnetic chains, but means to realize spinons in higher dimensions is the subject of intense research. Here, we use resonant x-ray scattering to study the layered trimer iridate Ba_{4}Ir_{3}O_{10}, which shows no magnetic order down to 0.2 K. An emergent one-dimensional spinon continuum is observed that can be well described by XXZ spin-1/2 chains with a magnetic exchange of ∼55 meV and a small Ising-like anisotropy. With 2% isovalent Sr doping, magnetic order appears below T_{N}=130 K along with sharper excitations in (Ba_{1-x}Sr_{x})_{4}Ir_{3}O_{10}. Combining our data with exact diagonalization calculations, we find that the frustrated intratrimer interactions effectively reduce the system into decoupled spin chains, the subtle balance of which can be easily tipped by perturbations such as chemical doping. Our results put Ba_{4}Ir_{3}O_{10} between the one-dimensional chain and two-dimensional quantum spin liquid scenarios, illustrating a new way to suppress magnetic order and realize fractional spinons.
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Affiliation(s)
- Y Shen
- Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - J Sears
- Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - G Fabbris
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - A Weichselbaum
- Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - W Yin
- Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - H Zhao
- Department of Physics, University of Colorado Boulder, Boulder, Colorado 80309, USA
| | - D G Mazzone
- Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institut, CH-5232 Villigen, Switzerland
| | - H Miao
- Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA
- Material Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - M H Upton
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - D Casa
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - R Acevedo-Esteves
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - C Nelson
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - A M Barbour
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - C Mazzoli
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - G Cao
- Department of Physics, University of Colorado Boulder, Boulder, Colorado 80309, USA
| | - M P M Dean
- Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA
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Kammert JD, Brezicki G, Acevedo-Esteves R, Stavitski E, Davis RJ. High-throughput operando-ready X-ray absorption spectroscopy flow reactor cell for powder samples. Rev Sci Instrum 2020; 91:013107. [PMID: 32012544 DOI: 10.1063/1.5124301] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Accepted: 12/19/2019] [Indexed: 06/10/2023]
Abstract
A high-throughput, operando-ready X-ray absorption spectroscopy catalytic reaction cell consisting of 4 parallel reactors was designed to collect X-ray absorption near edge structure and extended fine structure spectra under reaction conditions. The cell is capable of operating at temperatures from ambient conditions up to 773 K and pressures from ambient to 2 MPa in a variety of gas environments. The cell design is mechanically simple, and programmable operation at beamline 8-ID (NSLS-II, Brookhaven National Laboratory) makes it straightforward to use. Reactor tube parts were available as-fabricated from commercial sources, while the heating jacket and cell mounting required custom machining.
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Affiliation(s)
- James D Kammert
- Department of Chemical Engineering, University of Virginia, 102 Engineer's Way, P.O. Box 400741, Charlottesville, Virginia 22904-4741, USA
| | - Gordon Brezicki
- Department of Chemical Engineering, University of Virginia, 102 Engineer's Way, P.O. Box 400741, Charlottesville, Virginia 22904-4741, USA
| | - Raul Acevedo-Esteves
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Eli Stavitski
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Robert J Davis
- Department of Chemical Engineering, University of Virginia, 102 Engineer's Way, P.O. Box 400741, Charlottesville, Virginia 22904-4741, USA
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