Tuning the electronic and the crystalline structure of LaBi by pressure: From extreme magnetoresistance to superconductivity

F. F. Tafti; M. S. Torikachvili; R. L. Stillwell; B. Baer; E. Stavrou; S. T. Weir; Y. K. Vohra; H. Y. Yang; E. F. McDonnell; S. K. Kushwaha; Q. D. Gibson; R. J. Cava; J. R. Jeffries

doi:10.1103/PhysRevB.95.014507

Tuning the electronic and the crystalline structure of LaBi by pressure: From extreme magnetoresistance to superconductivity

F. F. Tafti, M. S. Torikachvili, R. L. Stillwell, B. Baer, E. Stavrou, S. T. Weir, Y. K. Vohra, H. Y. Yang, E. F. McDonnell, S. K. Kushwaha, Q. D. Gibson, R. J. Cava, J. R. Jeffries

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Abstract

Extreme magnetoresistance (XMR) in topological semimetals is a recent discovery which attracts attention due to its robust appearance in a growing number of materials. To search for a relation between XMR and superconductivity, we study the effect of pressure on LaBi. By increasing pressure, we observe the disappearance of XMR followed by the appearance of superconductivity at P≈3.5 GPa. We find a region of coexistence between superconductivity and XMR in LaBi in contrast to other superconducting XMR materials. The suppression of XMR is correlated with increasing zero-field resistance instead of decreasing in-field resistance. At higher pressures, P≈11 GPa, we find a structural transition from the face-centered cubic lattice to a primitive tetragonal lattice, in agreement with theoretical predictions. The relationship between extreme magnetoresistance, superconductivity, and structural transition in LaBi is discussed.

Original language	English
Article number	014507
Journal	Physical Review B
Volume	95
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevB.95.014507
State	Published - 10 Jan 2017
Externally published	Yes

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Tafti, F. F., Torikachvili, M. S., Stillwell, R. L., Baer, B., Stavrou, E., Weir, S. T., Vohra, Y. K., Yang, H. Y., McDonnell, E. F., Kushwaha, S. K., Gibson, Q. D., Cava, R. J., & Jeffries, J. R. (2017). Tuning the electronic and the crystalline structure of LaBi by pressure: From extreme magnetoresistance to superconductivity. Physical Review B, 95(1), Article 014507. https://doi.org/10.1103/PhysRevB.95.014507

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title = "Tuning the electronic and the crystalline structure of LaBi by pressure: From extreme magnetoresistance to superconductivity",

abstract = "Extreme magnetoresistance (XMR) in topological semimetals is a recent discovery which attracts attention due to its robust appearance in a growing number of materials. To search for a relation between XMR and superconductivity, we study the effect of pressure on LaBi. By increasing pressure, we observe the disappearance of XMR followed by the appearance of superconductivity at P≈3.5 GPa. We find a region of coexistence between superconductivity and XMR in LaBi in contrast to other superconducting XMR materials. The suppression of XMR is correlated with increasing zero-field resistance instead of decreasing in-field resistance. At higher pressures, P≈11 GPa, we find a structural transition from the face-centered cubic lattice to a primitive tetragonal lattice, in agreement with theoretical predictions. The relationship between extreme magnetoresistance, superconductivity, and structural transition in LaBi is discussed.",

author = "Tafti, {F. F.} and Torikachvili, {M. S.} and Stillwell, {R. L.} and B. Baer and E. Stavrou and Weir, {S. T.} and Vohra, {Y. K.} and Yang, {H. Y.} and McDonnell, {E. F.} and Kushwaha, {S. K.} and Gibson, {Q. D.} and Cava, {R. J.} and Jeffries, {J. R.}",

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doi = "10.1103/PhysRevB.95.014507",

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Tafti, FF, Torikachvili, MS, Stillwell, RL, Baer, B, Stavrou, E, Weir, ST, Vohra, YK, Yang, HY, McDonnell, EF, Kushwaha, SK, Gibson, QD, Cava, RJ & Jeffries, JR 2017, 'Tuning the electronic and the crystalline structure of LaBi by pressure: From extreme magnetoresistance to superconductivity', Physical Review B, vol. 95, no. 1, 014507. https://doi.org/10.1103/PhysRevB.95.014507

TY - JOUR

T1 - Tuning the electronic and the crystalline structure of LaBi by pressure

T2 - From extreme magnetoresistance to superconductivity

AU - Tafti, F. F.

AU - Torikachvili, M. S.

AU - Stillwell, R. L.

AU - Baer, B.

AU - Stavrou, E.

AU - Weir, S. T.

AU - Vohra, Y. K.

AU - Yang, H. Y.

AU - McDonnell, E. F.

AU - Kushwaha, S. K.

AU - Gibson, Q. D.

AU - Cava, R. J.

AU - Jeffries, J. R.

PY - 2017/1/10

Y1 - 2017/1/10

N2 - Extreme magnetoresistance (XMR) in topological semimetals is a recent discovery which attracts attention due to its robust appearance in a growing number of materials. To search for a relation between XMR and superconductivity, we study the effect of pressure on LaBi. By increasing pressure, we observe the disappearance of XMR followed by the appearance of superconductivity at P≈3.5 GPa. We find a region of coexistence between superconductivity and XMR in LaBi in contrast to other superconducting XMR materials. The suppression of XMR is correlated with increasing zero-field resistance instead of decreasing in-field resistance. At higher pressures, P≈11 GPa, we find a structural transition from the face-centered cubic lattice to a primitive tetragonal lattice, in agreement with theoretical predictions. The relationship between extreme magnetoresistance, superconductivity, and structural transition in LaBi is discussed.

AB - Extreme magnetoresistance (XMR) in topological semimetals is a recent discovery which attracts attention due to its robust appearance in a growing number of materials. To search for a relation between XMR and superconductivity, we study the effect of pressure on LaBi. By increasing pressure, we observe the disappearance of XMR followed by the appearance of superconductivity at P≈3.5 GPa. We find a region of coexistence between superconductivity and XMR in LaBi in contrast to other superconducting XMR materials. The suppression of XMR is correlated with increasing zero-field resistance instead of decreasing in-field resistance. At higher pressures, P≈11 GPa, we find a structural transition from the face-centered cubic lattice to a primitive tetragonal lattice, in agreement with theoretical predictions. The relationship between extreme magnetoresistance, superconductivity, and structural transition in LaBi is discussed.

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JO - Physical Review B

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Tuning the electronic and the crystalline structure of LaBi by pressure: From extreme magnetoresistance to superconductivity

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