Unique Quantum Metallic State in Ti2O3/GaN
Source abstract
Abstract
The emergence of quantum metallic state marked by a saturating finite electrical resistance in the zero-temperature limit in a variety of 2D superconductors injects an exciting momentum into the realm of heterostructure superconductivity. Despite much research effort over the last few decades, there is not yet a general consensus on the nature of this unexpected quantum metal. Here, we report the observation of a unique quantum metallic state within the hallmark of Bose-metal in Ti 2 O 3 /GaN. Remarkably, the quantum bosonic metallic state continuously tuned by a magnetic field in the vicinity of the two-dimensional superconductivity-metal transition persists in the normal phase, indicating the existence of composite bosons formed by electron Cooper pairs even in the normal phase. Our findings provide distinct evidence for electron pairing in the normal phase of heterointerface superconductors and shed fresh light on the pairing nature underlying heterointerface superconductivity.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Electronic and Structural Properties of Oxides · Semiconductor materials and devices · Magnetic and transport properties of perovskites and related materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory of Surface Physics and Department of Physics
Fudan University
National Key Laboratory of Materials for Integrated Circuits
Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences
University of Chinese Academy of Sciences
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics
Chinese Academy of Sciences
ShanghaiTech Laboratory for Topological Physics, School of Physical Science and Technology
ShanghaiTech University
Institute for Nanoelectronic Devices and Quantum Computing
Songshan Lake Materials Laboratory
Funding
Science and Technology Commission of Shanghai Municipality · National Natural Science Foundation of China · Beijing Nova Program · Chinese Academy of Sciences
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