Article
Physics, Applied
Vishal Bhardwaj, Niladri Banerjee, Ratnamala Chatterjee
Summary: The study investigates the effects of 4f electron doping on the structural, electrical, and magneto-transport properties of Dy-doped Y1-x(Dy)(x)PdBi thin films. The results show that Dy doping can modify the Fermi surface, carrier concentration, and effective electron mass, leading to a suppression of superconductivity-like phenomena. This suggests that f electron doping can tune various band structure parameters and induce surface dominated relativistic carrier transport in strained thin films of Y1-x(Dy)(x)PdBi at low temperatures.
APPLIED PHYSICS LETTERS
(2021)
Article
Physics, Multidisciplinary
Seiji Miyashita, Bernard Barbara
Summary: This Letter explores the characteristics of magnetic systems with a single or collective spin S and energy barriers, and presents a simple method for magnetization reversal through the application of electromagnetic radiations in the optical or microwave frequency ranges. This approach extends the oscillations between the energy wells and opens up new research directions in quantum information.
PHYSICAL REVIEW LETTERS
(2023)
Article
Physics, Multidisciplinary
V Leeb, K. Polyudov, S. Mashhadi, S. Biswas, Roser Valenti, M. Burghard, J. Knolle
Summary: In this study, a theory of anomalous quantum oscillations (QOs) in an effective Kitaev-Kondo lattice model is developed, revealing the interaction mechanism between itinerant electrons of the graphene layer and the correlated magnetic layer through spin interactions. At low temperatures, a heavy Fermi liquid emerges, where neutral Majorana fermion excitations of the Kitaev QSL acquire charge by hybridizing with the graphene Dirac band.
PHYSICAL REVIEW LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Sheng Xu, Chenxi Jiang, Shu-Xiang Li, Jun-Jian Mi, Zheng Li, Tian-Long Xia, Qian Tao, Zhu-An Xu
Summary: This study reports the magneto-Seebeck effect, large Nernst effect, and temperature-induced Lifshitz transition in the topological semimetal YbMnSb2. Quantum oscillations were observed in the magneto-Seebeck effect, with the extraction of six frequencies and a light effective mass of F4. A large Nernst effect was also discovered around 120 K and 14 T, which was mainly attributed to the high mobility and small Fermi energy induced by the Dirac bands, and further enhanced by the temperature-induced Lifshitz transition.
Article
Astronomy & Astrophysics
A. Capolupo, S. M. Giampaolo, A. Quaranta
Summary: This study presents a new theory of neutrino oscillations in a dense medium that goes beyond the traditional description of the MSW effect. The research demonstrates how interactions with the environment degrade the purity of neutrino states and how neutrino-matter interactions can result in decoherence. New oscillation formulas for neutrinos interacting with leptons are introduced, and numerical analysis shows deviations from the MSW formulas for ultra-high energy neutrinos propagating through the Earth, particularly at high density and/or high neutrino energy.
Article
Chemistry, Physical
Bruno Cury Camargo, Banan El-Kerdi, Andrei Alaferdov, Shahar Zuri, Magdalena Birowska, Walter Escoffier
Summary: We demonstrate that mechanical deformation of graphite through cavity shock waves can generate a new set of charge carriers, with significantly higher effective mass and native concentration compared to the pristine material. These carriers, however, still exhibit quasi-2D behavior. Our findings highlight the potential of defects introduced during mechanical exfoliation to induce oscillatory behavior above 50 T in graphite, offering a new avenue for studying field-induced electronic phase transitions in this material.
Review
Chemistry, Multidisciplinary
Pan Luo, Cheng Zheng, Jiawei He, Xin Tu, Wenping Sun, Hongge Pan, Yanping Zhou, Xianhong Rui, Bing Zhang, Kama Huang
Summary: Graphite-derived carbon materials are widely used in metal-ion batteries for their good mechanical and electrical properties, cost effectiveness, light weight, and environmental friendliness. Various studies have been conducted to enhance the metal-ion storage capability of graphite and its derivatives.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Saptarshi Mandal, Shakkira Erimban, Subhrajeet Banerjee, Snehasis Daschakraborty, Prolay Das
Summary: Through experiments and molecular dynamics studies, we found that the relationship between solvents and carbon dots has a significant impact on their red fluorescence. By controlling the solvent, we can achieve persistent red emission of carbon dots, which is of great significance for various applications.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Ghulam Abbas, Farjana J. Sonia, Zahid Ali Zafar, Karel Knizek, Jana Houdkova, Petr Jiricek, Milan Bousa, Jan Plsek, Martin Kalbac, Jiri Cervenka, Otakar Frank
Summary: Graphite intercalation compounds (GICs) are known for their diverse physicochemical properties and applications, with properties depending on synthesis technique, structure, morphology, intercalant species, and concentration. This study investigated ClO4- anion intercalation in two types of graphite, revealing differences in electrochemical behavior correlated with structural properties. Such findings offer new perspectives for GIC formation and electrochemical energy storage applications.
Article
Neurosciences
Korey Kam, Kenny Vetter, Rachel A. Tejiram, Ward D. Pettibone, Kaitlyn Shim, Mickael Audrain, Liping Yu, Ilse S. Daehn, Michelle E. Ehrlich, Andrew W. Varga
Summary: The impact of tau pathology on sleep microarchitecture features, specifically slow oscillations, spindles, and their coupling, has not been extensively studied. However, these features are believed to be important for learning and memory. Additionally, the effects of Dual orexin receptor antagonists (DORAs) on sleep microarchitecture in the presence of tauopathy are unknown. This study found that oral administration of DORA-12 in aged PS19 mice increased non-REM and REM duration, as well as spindle density, duration, and slow oscillation density.
JOURNAL OF NEUROSCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Mohammad Atif Javed, Jakob Schwibbert, Roman-Pascal Riwar
Summary: Fractionally charged excitations are important in condensed matter physics and can be detected through different means. The relationship between dissipationless supercurrents and dissipative transport is not fully understood when both of them coincide. In this study, we explore the dynamics of a system-detector using a Lindbladian that captures both coherent and dissipative transport, and show that even conventional superconductor-normal metal hybrid circuits exhibit various topological phases, including a fractional Josephson effect.
Article
Materials Science, Multidisciplinary
Yen-Wen Lu, Prashant Kumar, Michael Mulligan
Summary: Standard field theoretic formulations of composite fermion theories for anomalous metals are not Galilean invariant and require correction terms. This study investigates the effect of the dipole term in the Dirac composite fermion theory on quantum oscillations in electrical resistivity and finds it inadequate to explain the systematic discrepancy between theory and experiment. Additionally, the behavior of quantum oscillations at half-filled and quarter-filled lowest Landau levels are found to be qualitatively similar.
Article
Astronomy & Astrophysics
Carlos A. Arguelles, Toni Bertolez-Martinez, Jordi Salvado
Summary: Light sterile neutrinos have been proposed to explain anomalies observed in short-baseline neutrino experiments. Radioactive-source and reactor experiments have provided evidence and constraints for the disappearance of electron neutrinos, suggesting the existence of an eV-scale neutrino. However, these observations seem to be conflicting. This paper investigates the assumption of approximating the neutrino wave packet as a plane wave, showing that the damping of oscillation due to decoherence effects resolves the tension between electron-flavor observations and constraints.
Article
Chemistry, Multidisciplinary
Hui Luo, Leonardo Lari, Hyunjeong Kim, Servann Herou, Liviu Cristian Tanase, Vlado K. Lazarov, Maria-Magdalena Titirici
Summary: Carbon dots (CDs) are a novel class of photoluminescent material with unique optical properties derived from their electronic states. Their structural evolution through chemical reduction or thermal annealing affects their optoelectronic characteristics, offering potential applications in temperature sensing, solid-state display lighting, and anti-counterfeit security inks.
Article
Quantum Science & Technology
Jin-Hui Zhu, Li-Hua Lu, You-Quan Li
Summary: In this study, a continuous-time quantum walk on triple graphs with a potential well and a 'spontaneous damping' process is investigated. It is found that the system can exhibit factorization and coherence protection phenomena under specific conditions for the length and position of the side chain. Additionally, the impact of disorder on hopping strength is explored, showing that disorder can disrupt coherence protection and increase the stable probability of the terminal site on the main chain.
EPJ QUANTUM TECHNOLOGY
(2021)
Article
Physics, Multidisciplinary
P. Gierlowski, B. C. Camargo, K. Cho, I. Abaloszewa, A. Abaloszew, M. Jaworski
ACTA PHYSICA POLONICA A
(2019)
Article
Acoustics
S. Ben Moumen, Y. Gagou, S. Belkhadir, D. Mezzane, M. Amjoud, B. Rozic, L. Hajji, Z. Kutnjak, Z. Jaglicic, M. Jagodic, M. El Marssi, Y. Kopelevich, Igor A. Luk'yanchuk
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL
(2019)
Article
Materials Science, Multidisciplinary
Mohammed Hadouchi, Abderrazzak Assani, Mohamed Saadi, Yakov Kopelevich, Robson R. da Silva, Abdelilah Lahmar, Houssny Bouyanfif, Mimoun El Marssi, Lahcen El Ammari
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2019)
Article
Physics, Applied
B. Semenenko, B. C. Camargo, A. Setzer, W. Boehlmann, Y. Kopelevich, P. D. Esquinazi
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
(2020)
Article
Materials Science, Multidisciplinary
Bruno Cury Camargo, Piotr Gierlowski, Andrei Alaferdov, Iraida N. Demchenko, Maciej Sawicki, Katarzyna Gas, Yakov Kopelevich
Summary: The study reports the occurrence of anomalous Hall effect in bismuth crystals, suggesting non-intrinsic magnetism induced at surfaces and grain boundaries. The suppression of AHE with increasing magnetic field and temperature coincides with previous reports of superconductivity in bismuth, implying an interplay between the two phenomena.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2021)
Article
Physics, Condensed Matter
Bruno Cury Camargo, Piotr Gierlowski, Marek Kuzmiak, Ramon Ferreira de Jesus, Oleksandr Onufriienko, Pavol Szabo, Yakov Kopelevich
Summary: Proximity-induced superconducting features are observed over macroscopic lengths in highly oriented pyrolytic graphite, which is triggered by the injection of electrical currents through superconducting electrodes. This anomaly is attributed to the pre-existing superconductivity in localized regions within the graphite material.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2021)
Article
Biochemistry & Molecular Biology
Bartlomiej Rogalewicz, Malgorzata Szczesio, Ewa Poleszak, Joanna Kowalczyk, Bernadeta Szewczyk, Bruno Cury Camargo, Jacek Szczytko, Marcin Witkowski, Andrzej Fruzinski, Anita Raducka, Robert Banasiak, Agnieszka Czylkowska
Summary: Three new compounds with similar physicochemical properties were synthesized and studied, including their crystalline systems, thermal stability, and magnetic properties. The biological activity of these compounds on the central nervous system was investigated using Zebrafish tests, showing a certain level of impact.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Biochemistry & Molecular Biology
Agnieszka Czylkowska, Bartlomiej Rogalewicz, Malgorzata Szczesio, Anita Raducka, Katarzyna Gobis, Pawel Szymanski, Kamila Czarnecka, Bruno Cury Camargo, Jacek Szczytko, Alexey Babich, Sergey Dubkov, Petr Lazarenko
Summary: A novel biologically active organic ligand and its coordination compounds have been synthesized and studied. The physicochemical and biological properties of these compounds have been thoroughly examined. The study revealed that these compounds are stable at room temperature and exhibit potential antimicrobial activity. Additionally, the interaction of these compounds with silver nanoparticles showed promising biological effects.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Biochemistry & Molecular Biology
Agnieszka Czylkowska, Suneel Lanka, Malgorzata Szczesio, Kamila Czarnecka, Pawel Szymanski, Monika Pitucha, Aneta Drabinska, Bruno Cury Camargo, Jacek Szczytko
Summary: A new ligand C15 and its metal complexes were synthesized and evaluated for their anticancer activities. Complex 1 exhibited potential activity in HT29 and A549 cells, while complex 3 showed significant activity in HT29 cells. Additionally, toxicity prediction analysis was performed for C15.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Physical
Bruno Cury Camargo, Banan El-Kerdi, Andrei Alaferdov, Shahar Zuri, Magdalena Birowska, Walter Escoffier
Summary: We demonstrate that mechanical deformation of graphite through cavity shock waves can generate a new set of charge carriers, with significantly higher effective mass and native concentration compared to the pristine material. These carriers, however, still exhibit quasi-2D behavior. Our findings highlight the potential of defects introduced during mechanical exfoliation to induce oscillatory behavior above 50 T in graphite, offering a new avenue for studying field-induced electronic phase transitions in this material.
Article
Physics, Applied
Marcin Muszynski, Igor Antoniazzi, Bruno Camargo
Summary: In this study, we investigated the polarization dependence of optical reflectivity and Raman responses of graphite microstructures when the incident light is perpendicular to the material's stacking direction. We used novel graphite nanoribbons with polished edges through ion-beam etching. The results showed a strong polarization dependence of the D, G, and 2D Raman modes, and polarized reflectivity measurements demonstrated the potential of this device as a carbon-based, on-chip polarizer. We also discussed the advantages of the proposed fabrication method compared to mechanical polishing of bulk crystals.
APPLIED PHYSICS LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Jaroslaw Rybusinski, Tomasz Fos, Pablo Martin-Ramos, Victor Lavin, Jacek Szczytko, Jan Suffczynski, Inocencio R. Martin, Jesus Martin-Gil, Manuela Ramos, Bruno Cury Camargo
Summary: We demonstrate the selective control of magnetic response and photoluminescence properties of Er3+ centers by associating them with a highly conjugated beta-diketonate ligand (1,3-di(2-naphthyl)-1,3-propanedione). We show that this optically-pumped molecular compound emits in the infrared and can be used as a precise heat-driving and detecting unit for low temperatures.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Chemistry, Physical
Bruno Camargo, Irina Zajcewa, Anna Pietrzak, Emilia Obijalska, Jacek Szczytko, Piotr Kaszynski
Summary: Two derivatives of a super stable Blatter radical with different substitutes were obtained and studied using XRD and SQUID magnetometry methods. Both radicals showed strong antiferromagnetic interactions, and a structural transition was observed in one of the radicals at 29 K, indicating a two-dimensional to one-dimensional thermally activated crossover. The XRD structural analysis confirmed that the transition is related to an order-disorder transition of the CF3 group.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Environmental Sciences
Paulina Pietrzyk, Ewa Izabela Borowska, Patrycja Hejduk, Bruno Cury Camargo, Magdalena Warczak, Thu Phuong Nguyen, Agnieszka Pregowska, Marianna Gniadek, Jacek Szczylko, Slawomir Wilczewski, Magdalena Osial
Summary: In this study, green nanocomposites based on biomass and superparamagnetic nanoparticles were synthesized and utilized for efficiently removing methylene blue from water using magnetic separation. The synthesized adsorbents, comprising iron-oxide nanoparticles coated with coffee, cellulose, and red volcanic algae waste, enabled easy separation from aqueous solutions with magnets. SEM, FT-IR, and XPS methods were employed to characterize the morphology and chemical composition of the nanocomposites. The adsorption studies demonstrated that the adsorption performance strongly depended on the morphology and the type of organic adsorbent. The maximum adsorption capacities for coffee@Fe3O4-2, cellulose@Fe3O4-1, and algae@Fe3O4-1 were 38.23 mg g(-1), 41.61 mg g(-1), and 48.41 mg g(-1), respectively. The Langmuir and Redlich-Peterson models were found to appropriately describe the adsorption mechanisms for coffee@Fe3O4, cellulose@Fe3O4, and algae@Fe3O4, respectively. The nanocomposites exhibited high adsorption effectiveness, with up to 90% removal efficiency for methylene blue.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Multidisciplinary Sciences
Iryna Zaytseva, Aleksander Abaloszew, Bruno C. Camargo, Yevgen Syryanyy, Marta Z. Cieplak
SCIENTIFIC REPORTS
(2020)
