Local distortion driven magnetic phase switching in pyrochlore Yb2(Ti1-xSnx)2 O7

Yuanpeng Zhang; Zhiling Dun; Yunqi Cai; Chengkun Xing; Qi Cui; Naveen Kumar Chogondahalli Muniraju; Qiang Zhang; Yongqing Li; Jinguang Cheng; Haidong Zhou

doi:10.1103/PhysRevB.109.144407

Local distortion driven magnetic phase switching in pyrochlore Yb2(Ti1-xSnx)2 O7

Yuanpeng Zhang
, Zhiling Dun
, Yunqi Cai
, Chengkun Xing
, Qi Cui
, Naveen Kumar Chogondahalli Muniraju
, Qiang Zhang
, Yongqing Li
, Jinguang Cheng
, Haidong Zhou

Powder Diffraction

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

While it is commonly accepted that the disorder induced by magnetic ion doping in quantum magnets usually generates a rugged free-energy landscape resulting in slow or glassy spin dynamics, the disorder/distortion effects associated with nonmagnetic ion sites doping are still illusive. Here, using AC susceptibility measurements, we show that the mixture of Sn/Ti on the nonmagnetic ion sites of pyrochlore Yb2(Ti1-xSnx)2O7 induces an antiferromagnetic ground state despite both parent compounds, Yb2Ti2O7 and Yb2Sn2O7, order ferromagnetically. Local structure studies through neutron total scattering reveals the local distortion in the nonmagnetic ion sites and its strong correlation with the magnetic phase switching. Our study demonstrates the local distortion as induced by the nonmagnetic ion site mixture could be a new path to achieve magnetic phase switching, which has been traditionally obtained by external stimuli such as temperature, magnetic field, pressure, strain, light, etc.

Original language	English
Article number	144407
Journal	Physical Review B
Volume	109
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevB.109.144407
State	Published - Apr 1 2024

Funding

We thank Martin Mourigal and Itamar Kimchi for helpful discussion. J.C. is supported by the National Natural Science Foundation of China (12025408, 11874400, 11921004), the Key Research Program of Frontier Sciences of CAS(QYZDB-SSW-SLH013), the CAS Interdisciplinary Innovation Team (JCTD-2019-01) and Lujiaxi international group funding of K. C. Wong Education Foundation (GJTD-2020-01). The work at the University of Tennessee is supported by the U. S. Department of Energy under Grant No. DE-SC0020254. Part of the research conducted at SNS was sponsored by the Scientific User Facilities Division, Office of Basic Energy Sciences, US Department of Energy. The following funding is acknowledged: US Department of Energy, Office of Science (contract No. DE-AC05-00OR22725). This research used birthright cloud resources of the Compute and Data Environment for Science (CADES) at the Oak Ridge National Laboratory, which is supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC05-00OR22725. This research used resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy Office of Science User Facility using NERSC award BES-ERCAP0027504. We thank Dr. Emil S. Bozin for the discussion about the local structure studies.

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10.1103/PhysRevB.109.144407

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title = "Local distortion driven magnetic phase switching in pyrochlore Yb2(Ti1-xSnx)2 O7",

abstract = "While it is commonly accepted that the disorder induced by magnetic ion doping in quantum magnets usually generates a rugged free-energy landscape resulting in slow or glassy spin dynamics, the disorder/distortion effects associated with nonmagnetic ion sites doping are still illusive. Here, using AC susceptibility measurements, we show that the mixture of Sn/Ti on the nonmagnetic ion sites of pyrochlore Yb2(Ti1-xSnx)2O7 induces an antiferromagnetic ground state despite both parent compounds, Yb2Ti2O7 and Yb2Sn2O7, order ferromagnetically. Local structure studies through neutron total scattering reveals the local distortion in the nonmagnetic ion sites and its strong correlation with the magnetic phase switching. Our study demonstrates the local distortion as induced by the nonmagnetic ion site mixture could be a new path to achieve magnetic phase switching, which has been traditionally obtained by external stimuli such as temperature, magnetic field, pressure, strain, light, etc.",

author = "Yuanpeng Zhang and Zhiling Dun and Yunqi Cai and Chengkun Xing and Qi Cui and Muniraju, \{Naveen Kumar Chogondahalli\} and Qiang Zhang and Yongqing Li and Jinguang Cheng and Haidong Zhou",

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AU - Zhang, Yuanpeng

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AU - Cai, Yunqi

AU - Xing, Chengkun

AU - Cui, Qi

AU - Muniraju, Naveen Kumar Chogondahalli

AU - Zhang, Qiang

AU - Li, Yongqing

AU - Cheng, Jinguang

AU - Zhou, Haidong

PY - 2024/4/1

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N2 - While it is commonly accepted that the disorder induced by magnetic ion doping in quantum magnets usually generates a rugged free-energy landscape resulting in slow or glassy spin dynamics, the disorder/distortion effects associated with nonmagnetic ion sites doping are still illusive. Here, using AC susceptibility measurements, we show that the mixture of Sn/Ti on the nonmagnetic ion sites of pyrochlore Yb2(Ti1-xSnx)2O7 induces an antiferromagnetic ground state despite both parent compounds, Yb2Ti2O7 and Yb2Sn2O7, order ferromagnetically. Local structure studies through neutron total scattering reveals the local distortion in the nonmagnetic ion sites and its strong correlation with the magnetic phase switching. Our study demonstrates the local distortion as induced by the nonmagnetic ion site mixture could be a new path to achieve magnetic phase switching, which has been traditionally obtained by external stimuli such as temperature, magnetic field, pressure, strain, light, etc.

AB - While it is commonly accepted that the disorder induced by magnetic ion doping in quantum magnets usually generates a rugged free-energy landscape resulting in slow or glassy spin dynamics, the disorder/distortion effects associated with nonmagnetic ion sites doping are still illusive. Here, using AC susceptibility measurements, we show that the mixture of Sn/Ti on the nonmagnetic ion sites of pyrochlore Yb2(Ti1-xSnx)2O7 induces an antiferromagnetic ground state despite both parent compounds, Yb2Ti2O7 and Yb2Sn2O7, order ferromagnetically. Local structure studies through neutron total scattering reveals the local distortion in the nonmagnetic ion sites and its strong correlation with the magnetic phase switching. Our study demonstrates the local distortion as induced by the nonmagnetic ion site mixture could be a new path to achieve magnetic phase switching, which has been traditionally obtained by external stimuli such as temperature, magnetic field, pressure, strain, light, etc.

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Local distortion driven magnetic phase switching in pyrochlore Yb2(Ti1-xSnx)2 O7

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