Anomalous Metamagnetism in the Low Carrier Density Kondo Lattice YbRh3Si7

Binod K. Rai; S. Chikara; Xiaxin Ding; Iain W.H. Oswald; R. Schönemann; V. Loganathan; A. M. Hallas; H. B. Cao; Macy Stavinoha; T. Chen; Haoran Man; Scott Carr; John Singleton; Vivien Zapf; Katherine A. Benavides; Julia Y. Chan; Q. R. Zhang; D. Rhodes; Y. C. Chiu; Luis Balicas; A. A. Aczel; Q. Huang; Jeffrey W. Lynn; J. Gaudet; D. A. Sokolov; H. C. Walker; D. T. Adroja; Pengcheng Dai; Andriy H. Nevidomskyy; C. L. Huang; E. Morosan

doi:10.1103/PhysRevX.8.041047

Anomalous Metamagnetism in the Low Carrier Density Kondo Lattice YbRh3Si7

Binod K. Rai, S. Chikara, Xiaxin Ding, Iain W.H. Oswald, R. Schönemann, V. Loganathan, A. M. Hallas, H. B. Cao, Macy Stavinoha, T. Chen, Haoran Man, Scott Carr, John Singleton, Vivien Zapf, Katherine A. Benavides, Julia Y. Chan, Q. R. Zhang, D. Rhodes, Y. C. Chiu, Luis BalicasA. A. Aczel, Q. Huang, Jeffrey W. Lynn, J. Gaudet, D. A. Sokolov, H. C. Walker, D. T. Adroja, Pengcheng Dai, Andriy H. Nevidomskyy, C. L. Huang, E. Morosan

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Abstract

We report complex metamagnetic transitions in single crystals of the new low carrier Kondo antiferromagnet YbRh3Si7. Electrical transport, magnetization, and specific heat measurements reveal antiferromagnetic order at TN=7.5 K. Neutron diffraction measurements show that the magnetic ground state of YbRh3Si7 is a collinear antiferromagnet, where the moments are aligned in the ab plane. With such an ordered state, no metamagnetic transitions are expected when a magnetic field is applied along the c axis. It is therefore surprising that high-field magnetization, torque, and resistivity measurements with Hc reveal two metamagnetic transitions at μ0H1=6.7 T and μ0H2=21 T. When the field is tilted away from the c axis, towards the ab plane, both metamagnetic transitions are shifted to higher fields. The first metamagnetic transition leads to an abrupt increase in the electrical resistivity, while the second transition is accompanied by a dramatic reduction in the electrical resistivity. Thus, the magnetic and electronic degrees of freedom in YbRh3Si7 are strongly coupled. We discuss the origin of the anomalous metamagnetism and conclude that it is related to competition between crystal electric-field anisotropy and anisotropic exchange interactions.

Original language	English
Article number	041047
Journal	Physical Review X
Volume	8
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevX.8.041047
Publication status	Published - 13 Dec 2018
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevX.8.041047

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Rai, B. K., Chikara, S., Ding, X., Oswald, I. W. H., Schönemann, R., Loganathan, V., Hallas, A. M., Cao, H. B., Stavinoha, M., Chen, T., Man, H., Carr, S., Singleton, J., Zapf, V., Benavides, K. A., Chan, J. Y., Zhang, Q. R., Rhodes, D., Chiu, Y. C., ... Morosan, E. (2018). Anomalous Metamagnetism in the Low Carrier Density Kondo Lattice YbRh3Si7. Physical Review X, 8(4), Article 041047. https://doi.org/10.1103/PhysRevX.8.041047

@article{855386e3d97d4c6d8d1606fd0c5102d4,

title = "Anomalous Metamagnetism in the Low Carrier Density Kondo Lattice YbRh3Si7",

abstract = "We report complex metamagnetic transitions in single crystals of the new low carrier Kondo antiferromagnet YbRh3Si7. Electrical transport, magnetization, and specific heat measurements reveal antiferromagnetic order at TN=7.5 K. Neutron diffraction measurements show that the magnetic ground state of YbRh3Si7 is a collinear antiferromagnet, where the moments are aligned in the ab plane. With such an ordered state, no metamagnetic transitions are expected when a magnetic field is applied along the c axis. It is therefore surprising that high-field magnetization, torque, and resistivity measurements with Hc reveal two metamagnetic transitions at μ0H1=6.7 T and μ0H2=21 T. When the field is tilted away from the c axis, towards the ab plane, both metamagnetic transitions are shifted to higher fields. The first metamagnetic transition leads to an abrupt increase in the electrical resistivity, while the second transition is accompanied by a dramatic reduction in the electrical resistivity. Thus, the magnetic and electronic degrees of freedom in YbRh3Si7 are strongly coupled. We discuss the origin of the anomalous metamagnetism and conclude that it is related to competition between crystal electric-field anisotropy and anisotropic exchange interactions.",

author = "Rai, {Binod K.} and S. Chikara and Xiaxin Ding and Oswald, {Iain W.H.} and R. Sch{\"o}nemann and V. Loganathan and Hallas, {A. M.} and Cao, {H. B.} and Macy Stavinoha and T. Chen and Haoran Man and Scott Carr and John Singleton and Vivien Zapf and Benavides, {Katherine A.} and Chan, {Julia Y.} and Zhang, {Q. R.} and D. Rhodes and Chiu, {Y. C.} and Luis Balicas and Aczel, {A. A.} and Q. Huang and Lynn, {Jeffrey W.} and J. Gaudet and Sokolov, {D. A.} and Walker, {H. C.} and Adroja, {D. T.} and Pengcheng Dai and Nevidomskyy, {Andriy H.} and Huang, {C. L.} and E. Morosan",

note = "Publisher Copyright: {\textcopyright} 2018 authors. Published by the American Physical Society.",

year = "2018",

month = dec,

day = "13",

doi = "10.1103/PhysRevX.8.041047",

language = "English",

volume = "8",

journal = "Physical Review X",

issn = "2160-3308",

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Rai, BK, Chikara, S, Ding, X, Oswald, IWH, Schönemann, R, Loganathan, V, Hallas, AM, Cao, HB, Stavinoha, M, Chen, T, Man, H, Carr, S, Singleton, J, Zapf, V, Benavides, KA, Chan, JY, Zhang, QR, Rhodes, D, Chiu, YC, Balicas, L, Aczel, AA, Huang, Q, Lynn, JW, Gaudet, J, Sokolov, DA, Walker, HC, Adroja, DT, Dai, P, Nevidomskyy, AH, Huang, CL & Morosan, E 2018, 'Anomalous Metamagnetism in the Low Carrier Density Kondo Lattice YbRh3Si7', Physical Review X, vol. 8, no. 4, 041047. https://doi.org/10.1103/PhysRevX.8.041047

TY - JOUR

T1 - Anomalous Metamagnetism in the Low Carrier Density Kondo Lattice YbRh3Si7

AU - Rai, Binod K.

AU - Chikara, S.

AU - Ding, Xiaxin

AU - Oswald, Iain W.H.

AU - Schönemann, R.

AU - Loganathan, V.

AU - Hallas, A. M.

AU - Cao, H. B.

AU - Stavinoha, Macy

AU - Chen, T.

AU - Man, Haoran

AU - Carr, Scott

AU - Singleton, John

AU - Zapf, Vivien

AU - Benavides, Katherine A.

AU - Chan, Julia Y.

AU - Zhang, Q. R.

AU - Rhodes, D.

AU - Chiu, Y. C.

AU - Balicas, Luis

AU - Aczel, A. A.

AU - Huang, Q.

AU - Lynn, Jeffrey W.

AU - Gaudet, J.

AU - Sokolov, D. A.

AU - Walker, H. C.

AU - Adroja, D. T.

AU - Dai, Pengcheng

AU - Nevidomskyy, Andriy H.

AU - Huang, C. L.

AU - Morosan, E.

PY - 2018/12/13

Y1 - 2018/12/13

N2 - We report complex metamagnetic transitions in single crystals of the new low carrier Kondo antiferromagnet YbRh3Si7. Electrical transport, magnetization, and specific heat measurements reveal antiferromagnetic order at TN=7.5 K. Neutron diffraction measurements show that the magnetic ground state of YbRh3Si7 is a collinear antiferromagnet, where the moments are aligned in the ab plane. With such an ordered state, no metamagnetic transitions are expected when a magnetic field is applied along the c axis. It is therefore surprising that high-field magnetization, torque, and resistivity measurements with Hc reveal two metamagnetic transitions at μ0H1=6.7 T and μ0H2=21 T. When the field is tilted away from the c axis, towards the ab plane, both metamagnetic transitions are shifted to higher fields. The first metamagnetic transition leads to an abrupt increase in the electrical resistivity, while the second transition is accompanied by a dramatic reduction in the electrical resistivity. Thus, the magnetic and electronic degrees of freedom in YbRh3Si7 are strongly coupled. We discuss the origin of the anomalous metamagnetism and conclude that it is related to competition between crystal electric-field anisotropy and anisotropic exchange interactions.

AB - We report complex metamagnetic transitions in single crystals of the new low carrier Kondo antiferromagnet YbRh3Si7. Electrical transport, magnetization, and specific heat measurements reveal antiferromagnetic order at TN=7.5 K. Neutron diffraction measurements show that the magnetic ground state of YbRh3Si7 is a collinear antiferromagnet, where the moments are aligned in the ab plane. With such an ordered state, no metamagnetic transitions are expected when a magnetic field is applied along the c axis. It is therefore surprising that high-field magnetization, torque, and resistivity measurements with Hc reveal two metamagnetic transitions at μ0H1=6.7 T and μ0H2=21 T. When the field is tilted away from the c axis, towards the ab plane, both metamagnetic transitions are shifted to higher fields. The first metamagnetic transition leads to an abrupt increase in the electrical resistivity, while the second transition is accompanied by a dramatic reduction in the electrical resistivity. Thus, the magnetic and electronic degrees of freedom in YbRh3Si7 are strongly coupled. We discuss the origin of the anomalous metamagnetism and conclude that it is related to competition between crystal electric-field anisotropy and anisotropic exchange interactions.

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U2 - 10.1103/PhysRevX.8.041047

DO - 10.1103/PhysRevX.8.041047

M3 - Article

AN - SCOPUS:85060567105

SN - 2160-3308

VL - 8

JO - Physical Review X

JF - Physical Review X

IS - 4

M1 - 041047

ER -

Anomalous Metamagnetism in the Low Carrier Density Kondo Lattice YbRh3Si7

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