scholarly journals Nanoscience and Nanotechnology, Proceedings of the INFN-LNF 2018 Conference

2019 ◽  
Vol 4 (4) ◽  
pp. 88
Author(s):  
Stefano Bellucci
Keyword(s):  
Condensed Matter ◽  
Energy Materials ◽  
Nanoscience And Nanotechnology ◽  
Refereeing Process ◽  
Recent Developments ◽  
Low Dimensional ◽  
Year 2000

The NEXT Nanotechnology group at INFN-Laboratori Nazionali di Frascati (LNF) has organized, since the year 2000, a yearly series of international meetings in the area of nanotechnology. The 2018 conference has been devoted to recent developments in nanoscience and their manifold technological applications. These consisted of a number of tutorial/keynote lectures, as well as research talks presenting frontier nanoscience research developments and innovative nanotechnologies in the areas of biology, medicine, aerospace, optoelectronics, energy, materials and characterizations, low-dimensional nanostructures and devices. Selected, original papers based on the 2018 conference talks and related discussions have been published, after a careful refereeing process, in the MDPI journal Condensed Matter, and are currently included in the present dedicated issue.

17th Annual Conference of the Physical Society of Hong Kong

2015 ◽  
Vol 04 (01) ◽  
pp. 47-47
Author(s):  
Kin-Yiu WONG
Keyword(s):  
Hong Kong ◽  
Condensed Matter ◽  
Theoretical Physics ◽  
Annual Conference ◽  
Condensed Matter Physics ◽  
Energy Materials

On June 7th 2014 (Saturday), the 17th Annual Conference of the Physical Society of Hong Kong (PSHK), was hosted by the Department of Physics of Hong Kong Baptist University (HKBU). It was jointly organized by the Departments of Physics of six local universities (HKBU, CityU, CUHK, PolyU, HKUST, HKU), and was successfully held in the Tsang Chan Sik Yue Auditorium (and other second floor classrooms) of the Academic & Administration Building. The five themes of this conference are: (1) Metamaterials for Wave Manipulation; (2) Energy Materials and Devices; (3) Condensed Matter Physics; (4) Theoretical Physics and Astronomy; (5) Interdisciplinary Topics. Three internationally prestigious researchers, Prof. Ching W. Tang, Prof. Ping Sheng, and Prof. Henry Tye, were invited to give plenary talks, which were quite inspiring. Together with seventeen invited talks, forty contributed talks, and thirty-three posters, the Saturday event has attracted a total of more than one hundred participants consisting of local and overseas scholars and students. At the end of this conference, four Best Student Poster Awards were given to Chang Shuai (CUHK), Zhenghui Wu (HKBU), Shen Chan (HKUST), and Jiajun Zhang (CUHK). This important annual conference of PSHK will again be hosted by the Department of Physics at PolyU in the year 2015.

Bereziskii-Kosterlitz-Thouless transition in the Weyl system PtBi2

2021 ◽  
Author(s):  
Arthur Veyrat ◽  
Valentin Labracherie ◽  
Rohith Acharya ◽  
Dima Bashlakov ◽  
Federico Caglieris ◽  
...  
Keyword(s):  
Condensed Matter ◽  
Three Dimensional ◽  
Spin Orbit Coupling ◽  
Two Dimensional ◽  
Pairing Mechanism ◽  
Critical Fields ◽  
Weyl Semimetal ◽  
Superconducting Coherence Length ◽  
Low Dimensional ◽  
Strong Spin

Abstract Symmetry breaking in topological matter became, in the last decade, a key concept in condensed matter physics to unveil novel electronic states. In this work, we reveal that broken inversion symmetry and strong spin-orbit coupling in trigonal PtBi2 lead to a Weyl semimetal band structure, with unusually robust two-dimensional superconductivity in thin fims. Transport measurements show that high-quality PtBi2 crystals are three-dimensional superconductors (Tc≈600 mK) with an isotropic critical field (Bc≈50 mT). Remarkably, we evidence in a rather thick flake (60 nm), exfoliated from a macroscopic crystal, the two-dimensional nature of the superconducting state, with a critical temperature Tc≈370 mK and highly-anisotropic critical fields. Our results reveal a Berezinskii-Kosterlitz-Thouless transition with TBKT≈310 mK and with a broadening of Tc due to inhomogenities in the sample. Due to the very long superconducting coherence length ξ in PtBi2, the vortex-antivortex pairing mechanism can be studied in unusually-thick samples (at least five times thicker than for any other two-dimensional superconductor), making PtBi2 an ideal platform to study low dimensional superconductivity in a topological semimetal.

QFT, STRINGS AND LOW-DIMENSIONAL TOPOLOGY

2002 ◽  
Vol 17 (35) ◽  
pp. 2289-2295
Author(s):  
HU SEN
Keyword(s):  
Mirror Symmetry ◽  
Theoretical Physics ◽  
Yang Mills ◽  
Low Dimensional Topology ◽  
Witten Theory ◽  
Close Relationship ◽  
Jones Polynomials ◽  
Recent Developments ◽  
Low Dimensional ◽  
Chern Simons

In between the 80's and 90's we witnessed deep interactions between mathematics and theoretical physics, especially in the understanding of low-dimensional topology in terms of quantum field theory. For example, Jones polynomials (Chern–Simons–Witten theory), Donaldson and Seiberg–Witten invariants (SUSY Yang–Mills theory) and mirror symmetry (T duality in strings) are all naturally understood in terms of QFT and strings. Recent developments indicate a close relationship between gauge theory and gravity theory both in physics and in low-dimensional topology. We shall survey these developments and report some of our work. We shall also find that the keys to connect geometric and physical objects are through symmetry and quantization.

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