Jun 27, 2019

A peculiar ground-state phase for superconductor NbSe2
─It’s a Bose metal!


Overview of the press release

The application of large enough magnetic fields results in the disruption of superconducting states in materials even at drastically low temperature, thereby changing them directly into insulators—or so was traditionally thought. Now, scientists at Tokyo Institute of Technology, The University of Tokyo and Tohoku University report curious multi-state transitions of these superconductors: going from superconductor to special metal and then to insulator.

Figure 1. Electrical transport measurements
Schematic figure of the four-point probe used for analyzing the electron transport properties in ultrahigh vacuum. The superconductor is one unit-layer (UL) NbSe2 grown on a bilyer graphene (BLG) on SiC substrate.


To read the full press release, please visit the Tokyo Institute of Technology website.


Professor Shuji Hasegawa(Department of Physics, Graduate School of Science, The University of Tokyo) participated in this research.


Publication details

Journal Physical Review B
Title Vortex-induced quantum metallicity in the mono-unit-layer superconductor NbSe2
Authors Satoru Ichinokura, *Yuki Nakata, Katsuaki Sugawara, Yukihiro Endo, Akari Takayama, Takashi Takahashi, Shuji Hasegawa
DOI 10.1103/PhysRevB.99.220501


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