Zobrazeno 1 - 10
of 125
pro vyhledávání: '"Nojima, Tsutomu"'
Autor:
Nakagawa, Yuji, Kasahara, Yuichi, Nomoto, Takuya, Arita, Ryotaro, Nojima, Tsutomu, Iwasa, Yoshihiro
The Bardeen-Cooper-Schrieffer (BCS) condensation and the Bose-Einstein condensation (BEC) are the two extreme limits of the ground state of the paired fermion systems. We report crossover behavior from the BCS condensation to the BEC realized in the
Externí odkaz:
http://arxiv.org/abs/2012.05707
Publikováno v:
Phys. Rev. Materials 4, 074003 (2020)
Recent discoveries of two-dimensional (2D) superconductors have uncovered various new aspects of physical properties including vortex matter. In this paper, we report transport properties and a dynamical phase diagram at zero magnetic field in ion-ga
Externí odkaz:
http://arxiv.org/abs/2006.10749
Publikováno v:
Phys. Rev. Research 2, 023127 (2020)
Dynamical behavior of vortices plays central roles in the quantum phenomena of two-dimensional (2D) superconductors. Quantum metallic state, for example, showing an anomalous temperature-independent resistive state down to low-temperatures, has been
Externí odkaz:
http://arxiv.org/abs/1904.00611
Autor:
Nakagawa, Yuji, Saito, Yu, Nojima, Tsutomu, Inumaru, Kei, Yamanaka, Shoji, Kasahara, Yuichi, Iwasa, Yoshihiro
Publikováno v:
Phys. Rev. B 98, 064512 (2018)
Superconductivity mostly appears in high carrier density systems and sometimes exhibits common phase diagrams in which the critical temperature Tc continuously develops with carrier density. Superconductivity enhanced in lightly doped regime has seld
Externí odkaz:
http://arxiv.org/abs/1808.06635
Publikováno v:
Nature Communications, 9, 778 (2018)
Superconductor-insulator transition is one of the remarkable phenomena driven by quantum fluctuation in two-dimensional (2D) systems. Such a quantum phase transition (QPT) was investigated predominantly on highly disordered thin films with amorphous
Externí odkaz:
http://arxiv.org/abs/1804.07218
Autor:
Ueno, Katsuya, Kokubo, Nobuhito, Okayasu, Satoru, Nojima, Tsutomu, Nagashima, Yukihito, Seto, Yusuke, Matsumoto, Megumi, Sakurai, Takahiro, Ohta, Hithoshi, Takahashi, Kazuyuki, Uchino, Takashi
Recently, interest in Superconductor (S)-Normal (N) interfaces was renewed by the observation of exotic proximity effects in various systems, including S/semiconductor, S/ferromagnet, and S/topological insulator. In general, the proximity effect is e
Externí odkaz:
http://arxiv.org/abs/1709.00836
Publikováno v:
Nature Reviews Materials 2, 16094 (2016)
Recent technological advances in controlling materials have developed methods to produce idealized two-dimensional (2D) electron systems such as heterogeneous interfaces, molecular-beam-epitaxy (MBE) grown atomic layers, exfoliated thin flakes and fi
Externí odkaz:
http://arxiv.org/abs/1703.03541
Publikováno v:
Journal of the Physical Society of Japan 84, 043704 (2015)
We report on the direct observation of vortex states confined in equilateral and isosceles triangular dots of weak pinning amorphous superconducting thin films with a scanning superconducting quantum interference device microscope. The observed image
Externí odkaz:
http://arxiv.org/abs/1603.03131
Publikováno v:
Science 350 (6259), 409-413 (2015)
Recently emerging two-dimensional (2D) superconductors in atomically thin layers and at heterogeneous interfaces are attracting growing interest in condensed matter physics. Here, we report that ion-gated ZrNCl surface, exhibiting a dome-shaped phase
Externí odkaz:
http://arxiv.org/abs/1511.03266
Autor:
Saito, Yu, Nakamura, Yasuharu, Bahramy, Mohammad Saeed, Kohama, Yoshimitsu, Ye, Jianting, Kasahara, Yuichi, Nakagawa, Yuji, Onga, Masaru, Tokunaga, Masashi, Nojima, Tsutomu, Yanase, Youichi, Iwasa, Yoshihiro
Publikováno v:
Nature Physics 12 (2), 144-149 (2016)
Symmetry-breaking has been known to play a key role in noncentrosymmetric superconductors with strong spin-orbit-interaction (SOI). The studies, however, have been so far mainly focused on a particular type of SOI, known as Rashba SOI, whereby the el
Externí odkaz:
http://arxiv.org/abs/1506.04146