Pressure-driven superconductivity in the transition-metal pentatelluride HfTe5
Yanpeng Qi, Wujun Shi, Pavel G. Naumov, Nitesh Kumar, Walter Schnelle, Oleg Barkalov, Chandra Shekhar, Horst Borrmann, Claudia Felser, Binghai Yan, Sergey A. Medvedev
DOI 10.1103/PhysRevB.94.054517 · Physical Review B
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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.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| HfTe5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.8 | 5 GPa | onset |
| HfTe5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4.8 | 20 GPa | onset |
| ZrTe5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| ZrTe3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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