Room Temperature Evidence of PtTe <sub>2</sub> Topological Semimetal Character

Publication date: 5 Gen 2026

JournalSource: OPENALEXOpenAlex type: articleOpen Access
Authors: Matteo Gardella, Chiara Massetti, Alessio Lamperti, M. Zacchigna, K. Muthumalai, Zdeněk Sofer, Zipporah Rini Behner, Polina M. Sheverdyaeva, Paolo Moras, Alessandro Molle

Topological semimetals, being characterized by symmetry‐protected band crossings, represent a fascinating class of materials with extraordinary electronic properties. Type‐II Dirac semimetals, featuring highly tilted Dirac cones, offer unique opportunities for both fundamental research and technological advancements. Platinum ditelluride (PtTe 2 ) has emerged as a promising candidate for a type‐II Dirac semimetal, exhibiting relevant properties for future spintronic and optoelectronic devices. While the existence of type‐II Dirac cones in PtTe 2 has been confirmed by cryogenic temperature angle‐resolved photoemission spectroscopy (ARPES), practical applications necessitate their stability at ambient conditions. Here, we present a melt growth method for the synthesis of high‐quality PtTe 2 crystals and we perform ARPES characterization both at cryogenic and at room temperature, providing compelling evidence for the robust nature of its topological electronic structure under realistic operating conditions. This demonstration paves the way for the development of PtTe 2 ‐based devices leveraging its distinctive topological properties in practical settings.

Origin
physica status solidi (RRL) - Rapid Research Letters
Volume
20
Issue
2
Cited by
1