Microscopic manifestation of the spin phase transition at filling factor 2/3
| العنوان: | Microscopic manifestation of the spin phase transition at filling factor 2/3 |
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| المؤلفون: | Jurgen H. Smet, Amir Yacoby, Dieter Schuh, Jens Martin, Diana Mahalu, Basile Verdene, Gerardo Gamez, Gerhard Abstreiter, Klaus von Klitzing |
| المصدر: | Nature Physics. 3:392-396 |
| بيانات النشر: | Springer Science and Business Media LLC, 2007. |
| سنة النشر: | 2007 |
| مصطلحات موضوعية: | Physics, Quantum phase transition, Hysteresis, Phase transition, Condensed matter physics, Filling factor, Spin transition, Compressibility, General Physics and Astronomy, Spectral line, Spin-½ |
| الوصف: | First-order phase transitions are known to be accompanied by hysteresis due to the formation of domains with different order parameters. As the transition is approached, the domain sizes increase to macroscopic dimensions. It is therefore natural to expect that hysteresis will be absent from samples of microscopic size. Here, we explore from a microscopic standpoint the hysteretic behaviour across the spin phase transition that occurs at filling ν=2/3 in the fractional-quantum-Hall regime1,2,3,4,5. Using a single-electron transistor, we follow the evolution of localized states across the spin transition by measuring the local compressibility. Localized-state spectra clearly reveal the hysteretic behaviour accompanying the transition. Using electrostatic gating we continuously vary the size of the sample undergoing the phase transition. For submicrometre dimensions the hysteresis disappears, indicating domain sizes in excess of 500 nm. |
| تدمد: | 1745-2481 1745-2473 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::31b52df156084fdd3370cda34531382c https://doi.org/10.1038/nphys588 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi...........31b52df156084fdd3370cda34531382c |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 17452481 17452473 |
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