Pressure-induced magnetic collapse and metallization of TlF e1.6 S e2

P. G. Naumov; K. Filsinger; S. I. Shylin; O. I. Barkalov; V. Ksenofontov; Y. Qi; T. Palasyuk; W. Schnelle; S. A. Medvedev; M. Greenblatt; C. Felser

doi:10.1103/PhysRevB.96.064109

Pressure-induced magnetic collapse and metallization of TlF e1.6 S e2

P. G. Naumov, K. Filsinger, S. I. Shylin, O. I. Barkalov, V. Ksenofontov, Y. Qi, T. Palasyuk, W. Schnelle, S. A. Medvedev, M. Greenblatt, C. Felser

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6 Scopus citations

Abstract

The crystal structure, magnetic ordering, and electrical resistivity of TlFe1.6Se2 were studied at high pressures. Below ∼7GPa, TlFe1.6Se2 is an antiferromagnetically ordered semiconductor with a ThCr2Si2-type structure. The insulator-to-metal transformation observed at a pressure of ∼7GPa is accompanied by a loss of magnetic ordering and an isostructural phase transition. In the pressure range ∼7.5-11GPa a remarkable downturn in resistivity, which resembles a superconducting transition, is observed below 15 K. We discuss this feature as the possible onset of superconductivity originating from a phase separation in a small fraction of the sample in the vicinity of the magnetic transition.

Original language	English (US)
Article number	064109
Journal	Physical Review B
Volume	96
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevB.96.064109
State	Published - Aug 16 2017
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.96.064109

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@article{d69698496893447caa14958c7c20e7cd,

title = "Pressure-induced magnetic collapse and metallization of TlF e1.6 S e2",

abstract = "The crystal structure, magnetic ordering, and electrical resistivity of TlFe1.6Se2 were studied at high pressures. Below ∼7GPa, TlFe1.6Se2 is an antiferromagnetically ordered semiconductor with a ThCr2Si2-type structure. The insulator-to-metal transformation observed at a pressure of ∼7GPa is accompanied by a loss of magnetic ordering and an isostructural phase transition. In the pressure range ∼7.5-11GPa a remarkable downturn in resistivity, which resembles a superconducting transition, is observed below 15 K. We discuss this feature as the possible onset of superconductivity originating from a phase separation in a small fraction of the sample in the vicinity of the magnetic transition.",

author = "Naumov, {P. G.} and K. Filsinger and Shylin, {S. I.} and Barkalov, {O. I.} and V. Ksenofontov and Y. Qi and T. Palasyuk and W. Schnelle and Medvedev, {S. A.} and M. Greenblatt and C. Felser",

note = "Publisher Copyright: {\textcopyright} 2017 American Physical Society.",

year = "2017",

month = aug,

day = "16",

doi = "10.1103/PhysRevB.96.064109",

language = "English (US)",

volume = "96",

journal = "Physical Review B",

issn = "2469-9950",

publisher = "American Physical Society",

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TY - JOUR

T1 - Pressure-induced magnetic collapse and metallization of TlF e1.6 S e2

AU - Naumov, P. G.

AU - Filsinger, K.

AU - Shylin, S. I.

AU - Barkalov, O. I.

AU - Ksenofontov, V.

AU - Qi, Y.

AU - Palasyuk, T.

AU - Schnelle, W.

AU - Medvedev, S. A.

AU - Greenblatt, M.

AU - Felser, C.

PY - 2017/8/16

Y1 - 2017/8/16

N2 - The crystal structure, magnetic ordering, and electrical resistivity of TlFe1.6Se2 were studied at high pressures. Below ∼7GPa, TlFe1.6Se2 is an antiferromagnetically ordered semiconductor with a ThCr2Si2-type structure. The insulator-to-metal transformation observed at a pressure of ∼7GPa is accompanied by a loss of magnetic ordering and an isostructural phase transition. In the pressure range ∼7.5-11GPa a remarkable downturn in resistivity, which resembles a superconducting transition, is observed below 15 K. We discuss this feature as the possible onset of superconductivity originating from a phase separation in a small fraction of the sample in the vicinity of the magnetic transition.

AB - The crystal structure, magnetic ordering, and electrical resistivity of TlFe1.6Se2 were studied at high pressures. Below ∼7GPa, TlFe1.6Se2 is an antiferromagnetically ordered semiconductor with a ThCr2Si2-type structure. The insulator-to-metal transformation observed at a pressure of ∼7GPa is accompanied by a loss of magnetic ordering and an isostructural phase transition. In the pressure range ∼7.5-11GPa a remarkable downturn in resistivity, which resembles a superconducting transition, is observed below 15 K. We discuss this feature as the possible onset of superconductivity originating from a phase separation in a small fraction of the sample in the vicinity of the magnetic transition.

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DO - 10.1103/PhysRevB.96.064109

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JF - Physical Review B

IS - 6

M1 - 064109

ER -

Pressure-induced magnetic collapse and metallization of TlF e1.6 S e2

Abstract

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