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Tunable quantum criticality and super-ballistic transport in a 'charge' Kondo circuit
- Source :
- Science, Science, 2018, 360 (6395), pp.1315-1320. ⟨10.1126/science.aan5592⟩, Science, American Association for the Advancement of Science, 2018, 360 (6395), pp.1315-1320. ⟨10.1126/science.aan5592⟩
- Publication Year :
- 2018
- Publisher :
- HAL CCSD, 2018.
-
Abstract
- Quantum phase transitions are ubiquitous in many exotic behaviors of strongly-correlated materials. However the microscopic complexity impedes their quantitative understanding. Here, we observe thoroughly and comprehend the rich strongly-correlated physics in two profoundly dissimilar regimes of quantum criticality. With a circuit implementing a quantum simulator for the three-channel Kondo model, we reveal the universal scalings toward different low-temperature fixed points and along the multiple crossovers from quantum criticality. Notably, an unanticipated violation of the maximum conductance for ballistic free electrons is uncovered. The present charge pseudospin implementation of a Kondo impurity opens access to a broad variety of strongly-correlated phenomena.<br />Article (6 figures) with supplementary (4 figures); http://science.sciencemag.org/content/360/6395/1315
- Subjects :
- Quantum phase transition
Free electron model
Quantum simulator
FOS: Physical sciences
02 engineering and technology
01 natural sciences
Condensed Matter - Strongly Correlated Electrons
Ballistic conduction
0103 physical sciences
Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
010306 general physics
Quantum
[PHYS.COND.CM-MSQHE]Physics [physics]/Condensed Matter [cond-mat]/Mesoscopic Systems and Quantum Hall Effect [cond-mat.mes-hall]
Physics
[PHYS]Physics [physics]
Quantum Physics
Multidisciplinary
Condensed matter physics
Strongly Correlated Electrons (cond-mat.str-el)
Condensed Matter - Mesoscale and Nanoscale Physics
Charge (physics)
021001 nanoscience & nanotechnology
Criticality
0210 nano-technology
Kondo model
Quantum Physics (quant-ph)
Subjects
Details
- Language :
- English
- ISSN :
- 00368075 and 10959203
- Database :
- OpenAIRE
- Journal :
- Science, Science, 2018, 360 (6395), pp.1315-1320. ⟨10.1126/science.aan5592⟩, Science, American Association for the Advancement of Science, 2018, 360 (6395), pp.1315-1320. ⟨10.1126/science.aan5592⟩
- Accession number :
- edsair.doi.dedup.....c643abfc4785dfa49a71e40bc43707ef