{"title":"通过优化合成制备的具有自旋-1/2 三角晶格的 Mo3O8 型团簇莫特绝缘体 Na3Sc2(MoO4)2Mo3O8 的磁有序性","authors":"Yuya Haraguchi, Daigo Ishikita, Hiroko Aruga Katori","doi":"10.1103/physrevmaterials.8.084409","DOIUrl":null,"url":null,"abstract":"We detail the optimized synthesis of the <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><msub><mi>Mo</mi><mn>3</mn></msub><msub><mi mathvariant=\"normal\">O</mi><mn>8</mn></msub></mrow></math>-type cluster Mott insulator (CMI) <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><msub><mi mathvariant=\"normal\">Na</mi><mn>3</mn></msub><msub><mi mathvariant=\"normal\">Sc</mi><mn>2</mn></msub><msub><mrow><mo>(</mo><msub><mi>MoO</mi><mn>4</mn></msub><mo>)</mo></mrow><mn>2</mn></msub><msub><mi mathvariant=\"normal\">Mo</mi><mn>3</mn></msub><msub><mi mathvariant=\"normal\">O</mi><mn>8</mn></msub></mrow></math>, which has been considered a candidate for realizing the spin liquid ground state. The optimized <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><msub><mi mathvariant=\"normal\">Na</mi><mn>3</mn></msub><msub><mi mathvariant=\"normal\">Sc</mi><mn>2</mn></msub><msub><mrow><mo>(</mo><msub><mi>MoO</mi><mn>4</mn></msub><mo>)</mo></mrow><mn>2</mn></msub><msub><mi mathvariant=\"normal\">Mo</mi><mn>3</mn></msub><msub><mi mathvariant=\"normal\">O</mi><mn>8</mn></msub></mrow></math>, characterized by x-ray diffraction, energy-dispersive x-ray spectroscopy, and magnetic and heat capacity measurements exhibited an effective magnetic moment close to the ideal 1.73 <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><msub><mi>μ</mi><mi mathvariant=\"normal\">B</mi></msub></math> for S = 1/2 spin and magnetic ordering at ∼5 K. These observations categorize <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><msub><mi mathvariant=\"normal\">Na</mi><mn>3</mn></msub><msub><mi mathvariant=\"normal\">Sc</mi><mn>2</mn></msub><msub><mrow><mo>(</mo><msub><mi>MoO</mi><mn>4</mn></msub><mo>)</mo></mrow><mn>2</mn></msub><msub><mi mathvariant=\"normal\">Mo</mi><mn>3</mn></msub><msub><mi mathvariant=\"normal\">O</mi><mn>8</mn></msub></mrow></math> as the second <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><msub><mi>Mo</mi><mn>3</mn></msub><msub><mi mathvariant=\"normal\">O</mi><mn>8</mn></msub></mrow></math>-type CMI to achieve a magnetic ground state, following <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><msub><mi mathvariant=\"normal\">Li</mi><mn>2</mn></msub><msub><mi>InMo</mi><mn>3</mn></msub><msub><mi mathvariant=\"normal\">O</mi><mn>8</mn></msub></mrow></math>. They highlight the stabilization of the magnetic ground state over the theoretically anticipated quantum spin liquid state through precise valence and chemical disorder tuning. Our findings challenge the existing theory that the magnetic ground state of <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><msub><mi>Mo</mi><mn>3</mn></msub><msub><mi mathvariant=\"normal\">O</mi><mn>8</mn></msub></mrow></math>-type CMIs is determined by the breathing parameter, instead showing that magnetic order is suppressed by spin defects. This study underscores the crucial role of chemical precision in investigating quantum magnetism. It suggests that precise tuning of valence states could induce magnetic ordering in previously nonmagnetic <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><msub><mi>Mo</mi><mn>3</mn></msub><msub><mi mathvariant=\"normal\">O</mi><mn>8</mn></msub></mrow></math>-type CMIs. Additionally, the negative findings regarding the existence of quantum spin liquids highlight the need for applied research and a reevaluation of our fundamental understanding of electronic states from both theoretical and experimental aspects.","PeriodicalId":20545,"journal":{"name":"Physical Review Materials","volume":"18 1","pages":""},"PeriodicalIF":3.1000,"publicationDate":"2024-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Magnetic ordering of the Mo3O8-type cluster Mott insulator Na3Sc2(MoO4)2Mo3O8 with spin-1/2 triangular lattice prepared via optimal synthesis\",\"authors\":\"Yuya Haraguchi, Daigo Ishikita, Hiroko Aruga Katori\",\"doi\":\"10.1103/physrevmaterials.8.084409\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"We detail the optimized synthesis of the <math xmlns=\\\"http://www.w3.org/1998/Math/MathML\\\"><mrow><msub><mi>Mo</mi><mn>3</mn></msub><msub><mi mathvariant=\\\"normal\\\">O</mi><mn>8</mn></msub></mrow></math>-type cluster Mott insulator (CMI) <math xmlns=\\\"http://www.w3.org/1998/Math/MathML\\\"><mrow><msub><mi mathvariant=\\\"normal\\\">Na</mi><mn>3</mn></msub><msub><mi mathvariant=\\\"normal\\\">Sc</mi><mn>2</mn></msub><msub><mrow><mo>(</mo><msub><mi>MoO</mi><mn>4</mn></msub><mo>)</mo></mrow><mn>2</mn></msub><msub><mi mathvariant=\\\"normal\\\">Mo</mi><mn>3</mn></msub><msub><mi mathvariant=\\\"normal\\\">O</mi><mn>8</mn></msub></mrow></math>, which has been considered a candidate for realizing the spin liquid ground state. The optimized <math xmlns=\\\"http://www.w3.org/1998/Math/MathML\\\"><mrow><msub><mi mathvariant=\\\"normal\\\">Na</mi><mn>3</mn></msub><msub><mi mathvariant=\\\"normal\\\">Sc</mi><mn>2</mn></msub><msub><mrow><mo>(</mo><msub><mi>MoO</mi><mn>4</mn></msub><mo>)</mo></mrow><mn>2</mn></msub><msub><mi mathvariant=\\\"normal\\\">Mo</mi><mn>3</mn></msub><msub><mi mathvariant=\\\"normal\\\">O</mi><mn>8</mn></msub></mrow></math>, characterized by x-ray diffraction, energy-dispersive x-ray spectroscopy, and magnetic and heat capacity measurements exhibited an effective magnetic moment close to the ideal 1.73 <math xmlns=\\\"http://www.w3.org/1998/Math/MathML\\\"><msub><mi>μ</mi><mi mathvariant=\\\"normal\\\">B</mi></msub></math> for S = 1/2 spin and magnetic ordering at ∼5 K. These observations categorize <math xmlns=\\\"http://www.w3.org/1998/Math/MathML\\\"><mrow><msub><mi mathvariant=\\\"normal\\\">Na</mi><mn>3</mn></msub><msub><mi mathvariant=\\\"normal\\\">Sc</mi><mn>2</mn></msub><msub><mrow><mo>(</mo><msub><mi>MoO</mi><mn>4</mn></msub><mo>)</mo></mrow><mn>2</mn></msub><msub><mi mathvariant=\\\"normal\\\">Mo</mi><mn>3</mn></msub><msub><mi mathvariant=\\\"normal\\\">O</mi><mn>8</mn></msub></mrow></math> as the second <math xmlns=\\\"http://www.w3.org/1998/Math/MathML\\\"><mrow><msub><mi>Mo</mi><mn>3</mn></msub><msub><mi mathvariant=\\\"normal\\\">O</mi><mn>8</mn></msub></mrow></math>-type CMI to achieve a magnetic ground state, following <math xmlns=\\\"http://www.w3.org/1998/Math/MathML\\\"><mrow><msub><mi mathvariant=\\\"normal\\\">Li</mi><mn>2</mn></msub><msub><mi>InMo</mi><mn>3</mn></msub><msub><mi mathvariant=\\\"normal\\\">O</mi><mn>8</mn></msub></mrow></math>. They highlight the stabilization of the magnetic ground state over the theoretically anticipated quantum spin liquid state through precise valence and chemical disorder tuning. Our findings challenge the existing theory that the magnetic ground state of <math xmlns=\\\"http://www.w3.org/1998/Math/MathML\\\"><mrow><msub><mi>Mo</mi><mn>3</mn></msub><msub><mi mathvariant=\\\"normal\\\">O</mi><mn>8</mn></msub></mrow></math>-type CMIs is determined by the breathing parameter, instead showing that magnetic order is suppressed by spin defects. This study underscores the crucial role of chemical precision in investigating quantum magnetism. It suggests that precise tuning of valence states could induce magnetic ordering in previously nonmagnetic <math xmlns=\\\"http://www.w3.org/1998/Math/MathML\\\"><mrow><msub><mi>Mo</mi><mn>3</mn></msub><msub><mi mathvariant=\\\"normal\\\">O</mi><mn>8</mn></msub></mrow></math>-type CMIs. Additionally, the negative findings regarding the existence of quantum spin liquids highlight the need for applied research and a reevaluation of our fundamental understanding of electronic states from both theoretical and experimental aspects.\",\"PeriodicalId\":20545,\"journal\":{\"name\":\"Physical Review Materials\",\"volume\":\"18 1\",\"pages\":\"\"},\"PeriodicalIF\":3.1000,\"publicationDate\":\"2024-08-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Physical Review Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1103/physrevmaterials.8.084409\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physical Review Materials","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1103/physrevmaterials.8.084409","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
摘要
我们详细介绍了 Mo3O8 型簇状莫特绝缘体(CMI)Na3Sc2(MoO4)2Mo3O8 的优化合成,它一直被认为是实现自旋液体基态的候选材料。经过优化的 Na3Sc2(MoO4)2Mo3O8 通过 X 射线衍射、能量色散 X 射线光谱以及磁性和热容量测量,在 S = 1/2 自旋和 5 K 磁有序的条件下,有效磁矩接近理想的 1.73 μB。他们强调了通过精确的价态和化学无序调整,磁基态比理论上预期的量子自旋液态更加稳定。我们的研究结果挑战了现有的理论,即 Mo3O8 型 CMI 的磁基态由呼吸参数决定,相反,研究结果表明磁有序受到自旋缺陷的抑制。这项研究强调了化学精确性在研究量子磁性中的关键作用。它表明,对价态的精确调谐可以诱导以前无磁性的 Mo3O8 型 CMIs 产生磁有序。此外,有关量子自旋液体存在的负面发现突出了应用研究以及从理论和实验两方面重新评估我们对电子态的基本认识的必要性。
Magnetic ordering of the Mo3O8-type cluster Mott insulator Na3Sc2(MoO4)2Mo3O8 with spin-1/2 triangular lattice prepared via optimal synthesis
We detail the optimized synthesis of the -type cluster Mott insulator (CMI) , which has been considered a candidate for realizing the spin liquid ground state. The optimized , characterized by x-ray diffraction, energy-dispersive x-ray spectroscopy, and magnetic and heat capacity measurements exhibited an effective magnetic moment close to the ideal 1.73 for S = 1/2 spin and magnetic ordering at ∼5 K. These observations categorize as the second -type CMI to achieve a magnetic ground state, following . They highlight the stabilization of the magnetic ground state over the theoretically anticipated quantum spin liquid state through precise valence and chemical disorder tuning. Our findings challenge the existing theory that the magnetic ground state of -type CMIs is determined by the breathing parameter, instead showing that magnetic order is suppressed by spin defects. This study underscores the crucial role of chemical precision in investigating quantum magnetism. It suggests that precise tuning of valence states could induce magnetic ordering in previously nonmagnetic -type CMIs. Additionally, the negative findings regarding the existence of quantum spin liquids highlight the need for applied research and a reevaluation of our fundamental understanding of electronic states from both theoretical and experimental aspects.
期刊介绍:
Physical Review Materials is a new broad-scope international journal for the multidisciplinary community engaged in research on materials. It is intended to fill a gap in the family of existing Physical Review journals that publish materials research. This field has grown rapidly in recent years and is increasingly being carried out in a way that transcends conventional subject boundaries. The journal was created to provide a common publication and reference source to the expanding community of physicists, materials scientists, chemists, engineers, and researchers in related disciplines that carry out high-quality original research in materials. It will share the same commitment to the high quality expected of all APS publications.