Pressure-driven superconductivity in the transition-metal pentatelluride HfTe5

Qi, Yanpeng; Shi, Wujun; Naumov, Pavel G.; Kumar, Nitesh; Schnelle, Walter; Barkalov, Oleg; Shekhar, Chandra; Borrmann, Horst; Felser, Claudia; Yan, Binghai; Medvedev, Sergey A.

doi:10.1103/PhysRevB.94.054517

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Pressure-driven superconductivity in the transition-metal pentatelluride HfTe₅

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Qi, Yanpeng
Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons198798

Shi, Wujun
Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons129064

Naumov, Pavel G.
Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons195511

Kumar, Nitesh
Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126838

Schnelle, Walter
Walter Schnelle, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons134422

Barkalov, Oleg
Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126847

Shekhar, Chandra
Chandra Shekhar, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126541

Borrmann, Horst
Horst Borrmann, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126601

Felser, Claudia
Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126916

Yan, Binghai
Binghai Yan, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126748

Medvedev, Sergey A.
Sergiy Medvediev, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Qi, Y., Shi, W., Naumov, P. G., Kumar, N., Schnelle, W., Barkalov, O., et al. (2016). Pressure-driven superconductivity in the transition-metal pentatelluride HfTe₅. Physical Review B, 94(5): 054517, pp. 1-9. doi:10.1103/PhysRevB.94.054517.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002B-555E-F

Abstract

The discovery of superconductivity in hafnium pentatelluride HfTe5 under high pressure is reported. Two structural phase transitions and metallization with superconductivity developing at around 5 GPa are observed. A maximal critical temperature of 4.8 K is attained at a pressure of 20 GPa, and superconductivity persists up to the maximum pressure of the study (42 GPa). The combination of electrical transport and crystal structure measurements as well as theoretical electronic structure calculations enables the construction of a phase diagram of HfTe5 under high pressure.