Evidence for a metal-bosonic insulator-superconductor transition in compressed sulfur
成果类型：
Article
署名作者：
Wang, Kui; Zhao, Hongjian; Liu, Guangtao; Zhou, Mi; Chen, Yinqi; Li, Qiushi; Ma, Guangchen; Wang, Hongbo; Hemley, Russell J.; Ma, Yanming
署名单位：
Jilin University; Jilin University; University of Illinois System; University of Illinois Chicago; University of Illinois Chicago Hospital; University of Illinois System; University of Illinois Chicago; University of Illinois Chicago Hospital; University of Illinois System; University of Illinois Chicago; University of Illinois Chicago Hospital; Jilin University
刊物名称：
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
ISSN/ISSBN：
0027-8537
DOI：
10.1073/pnas.2420904122
发表日期：
2025-01-07
关键词：
intrinsic resistance fluctuations
transverse voltage
t-c
peak
temperature
resistivity
pressures
anomalies
vortices
films
摘要：
The abrupt drop of resistance to zero at a critical temperature is a key signature of the current paradigm of the metal-superconductor transition. However, the emergence of an intermediate bosonic insulating state characterized by a resistance peak preceding the onset of the superconducting transition has challenged this traditional understanding. Notably, this phenomenon has been predominantly observed in disordered or chemically doped low- dimensional systems, raising intriguing questions about the generality of the effect and its underlying fundamental physics. Here, we present a systematic experimental superconductor, with detailed measurements of electrical resistance as a function of temperature, magnetic field, and current. The anomalous resistance peak observed in this 3D system is interpreted based on an empirical model of a metal-bosonic insulator-superconductor transition, potentially driven by vortex dynamics under magnetic field and energy dissipation processes. These findings offer a fresh platform for theoretical analysis of the decades- long enigmatic of the underlying mechanism of this phenomenon.
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