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Condensed Matter
Special Issues
New Trends in Quantum Complex Matter
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New Trends in Quantum Complex Matter

A special issue of Condensed Matter (ISSN 2410-3896).

Deadline for manuscript submissions: closed (15 August 2018) | Viewed by 11574

Special Issue Editors

Prof. Dr. Antonio Bianconi

E-Mail Website1 Website2
Guest Editor
Rome International Center for Materials Science Superstripes (RICMASS), Via dei Sabelli 119A, 00185 Roma, Italy
Interests: synchrotron radiation research; protein fluctuations; active sites of metalloproteins; origin of life; selected molecules in prebiotic world; quantum phenomena in complex matter; quantum confinement; superstripes in complex matter; lattice complexity in transition metal oxides; high Tc superconductors; valence fluctuation materials
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Augusto Marcelli

E-Mail Website
Guest Editor
1. INFN–LNF, Via E. Fermi 54, 00044 Frascati, Italy
2. CNR - Istituto Struttura della Materia and Elettra-Sincrotrone Trieste, Basovizza Area Science Park, 34149 Trieste, Italy
3. RICMASS - Rome International Center for Materials Science – Superstripes, Via dei Sabelli 119A, 00185 Roma, Italy
Interests: correlation phenomena in X-ray absorption spectroscopy; X-ray absorption in elements of geophysical interest; dust and aerosol characterization; ultra-trace detection for indoor and outdoor environmental studies
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Yasutomo Uemura

E-Mail
Guest Editor
Department of Physics, Columbia University, 538 West 120th Street, 704 Pupin Hall MC 5255, New York, NY 10027, USA
Interests: muon spin relaxation spectroscopy MuSR; neutron scattering; strongly correlated systems; unconventional superconductivity; novel magnetism; spin fluctuations and excitations in random magnetic systems, such as spin glasses and fractal spin networks
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

On behalf of the Organizing Committee, we are pleased to announce the international QCM2018 conference which will be held in Rome, Italy, 11–15 June, 2018. We cordially invite you to participate in this conference, and all presented papers will be invited to be published in a joint Special Issue (https://www.mdpi.com/journal/condensedmatter/special_issues/QCM_2018). However, we also encourage other contributions from the broader community, and this sister Special Issue is reserved for contributions which cannot be presented at the conference, on the following topics. Note that the Editorial Office will merge the publications of these two Special Issues into one printed book after completion.

Correlated Electronic Systems:

  • unconventional superconductivity
  • novel magnetism
  • Mott transition
  • quantum criticality
  • multi-band Hubbard model
  • Lifshitz transitions

Nano Science:

  • graphene
  • TMDC
  • QHE
  • Topological
  • 2-D materials
  • Fano resonances

Spintronics:

  • Skyrmions
  • Itinerant electron
  • Magnetism
  • Spin current
  • Magnetic memory

Cold Atoms:

  • Feshbach Resonance
  • Hubbard Model
  • BEC-BCS crossover

More detailed information about the conference could be found at: https://www.mdpi.com/journal/condensedmatter/events/7005

Register for the conference, please click: http://www.superstripes.net/quantum-complex-matter-2018

Prof. Antonio Bianconi
Prof. Dr. Augusto Marcelli
Prof. Dr. Yasutomo Uemura
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Condensed Matter is an international peer-reviewed open access quarterly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Benefits of Publishing in a Special Issue

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  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
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Further information on MDPI's Special Issue polices can be found here.

Published Papers (3 papers)

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Research

7 pages, 12291 KiB  
Article
A Monte-Carlo Study on the Coupling of Magnetism and Ferroelectricity in the Hexagonal Multiferroic RMnO3
by Chunruo Duan, Gia-Wei Chern and Despina Louca
Condens. Matter 2018, 3(4), 28; https://doi.org/10.3390/condmat3040028 - 20 Sep 2018
Cited by 1 | Viewed by 3086
Abstract
The ferroelectric phase transition in RMnO3 breaks both Z3 and Z2 symmetries, giving rise to 6 structural domains. Topological protected vortices are formed at the junctions of all 6 domains, and the ferroelectric phase transition is closely related to these [...] Read more.
The ferroelectric phase transition in RMnO3 breaks both Z3 and Z2 symmetries, giving rise to 6 structural domains. Topological protected vortices are formed at the junctions of all 6 domains, and the ferroelectric phase transition is closely related to these Z6 vortices. In this work, Monte-Carlo studies on both the ferroelectric and magnetic transition have been performed on RMnO3 system. The magnetic simulation results on lattices with different structural domain distributions induced by external electric field and simulated quenching show different magnetic transition temperature T s , indicating that the coupling of magnetism and ferroelectricity is through the Z6 structural domain. At extreme case, lattice quenched from above the ferroelectric transition results in high vortex density, which can drive the system into spin glass. Full article
(This article belongs to the Special Issue New Trends in Quantum Complex Matter)
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10 pages, 1846 KiB  
Article
Ground-State Magnetization in Mixtures of a Few Ultra-Cold Fermions in One-Dimensional Traps
by Tomasz Sowiński
Condens. Matter 2018, 3(1), 7; https://doi.org/10.3390/condmat3010007 - 6 Mar 2018
Cited by 4 | Viewed by 3417
Abstract
Ground-state properties of a few spin- 1 / 2 ultra-cold fermions confined in a one-dimensional trap are studied by the exact diagonalization method. In contrast to previous studies, it is not assumed that the projection of a spin of individual particles is fixed. [...] Read more.
Ground-state properties of a few spin- 1 / 2 ultra-cold fermions confined in a one-dimensional trap are studied by the exact diagonalization method. In contrast to previous studies, it is not assumed that the projection of a spin of individual particles is fixed. Therefore, the spin is treated as an additional degree of freedom and the global magnetization of the system is established spontaneously. Depending on the shape of the trap, inter-particle interactions, and an external magnetic field, the phase diagram of the system is determined. It is shown that, for particular confinements, some values of the magnetization cannot be reached by the ground-state of the system. Full article
(This article belongs to the Special Issue New Trends in Quantum Complex Matter)
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9 pages, 1521 KiB  
Article
VUV Pump and Probe of Phase Separation and Oxygen Interstitials in La2NiO4+y Using Spectromicroscopy
by Antonio Bianconi, Augusto Marcelli, Markus Bendele, Davide Innocenti, Alexei Barinov, Nathalie Poirot and Gaetano Campi
Condens. Matter 2018, 3(1), 6; https://doi.org/10.3390/condmat3010006 - 11 Feb 2018
Cited by 2 | Viewed by 4171
Abstract
While it is known that strongly correlated transition metal oxides described by a multi-band Hubbard model show microscopic multiscale phase separation, little is known about the possibility to manipulate them with vacuum ultraviolet (VUV), 27 eV lighting. We have investigated the photo-induced effects [...] Read more.
While it is known that strongly correlated transition metal oxides described by a multi-band Hubbard model show microscopic multiscale phase separation, little is known about the possibility to manipulate them with vacuum ultraviolet (VUV), 27 eV lighting. We have investigated the photo-induced effects of VUV light illumination of a super-oxygenated La2NiO4+y single crystal by means of scanning photoelectron microscopy. VUV light exposure induces the increase of the density of states (DOS) in the binding energy range around Eb = 1.4 eV below EF. The photo-induced states in this energy region have been predicted due to clustering of oxygen interstitials by band structure calculations for large supercell of La2CuO4.125. We finally show that it is possible to generate and manipulate oxygen rich domains by VUV illumination as it was reported for X-ray illumination of La2CuO4+y. This phenomenology is assigned to oxygen-interstitials ordering and clustering by photo-illumination forming segregated domains in the La2NiO4+y surface. Full article
(This article belongs to the Special Issue New Trends in Quantum Complex Matter)
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