Klinik Araştırma Türleri Ayşegül SAKİN Geleneksel Çin Tıbbı Kubilay KARABOYUN Ginseng Jamshid HAMDARD Zerdeçal Ekstresi (Kurkumin/Turmeric) Saadet SİM YILDIRIM Kara Kohoş Otu (Cimicifuga Racemosa) Merve ÖZKAN Ekinezya (Echinacea Purpurea) Abdussamet ÇELEBİ Gingko Biloba Mert ERCİYESTEPE Flavonoidler Aslı GEÇGEL Yeşil Çay (Camellia Sinensis) Berkan KARABUĞA Ada Çayı (Salvıa Offıcınalıs) Seval ORMAN Essiac Çayı Shamkhal SAFAROV Çörek Otu (Nigella Sativa) Özden DEMİR Deve Dikeni (Silybum Marianum) Gamze SERİN ÖZEL Isırgan Otu (Urtica Dioica) Gülhan DİNÇ Andız (Inula Viscoza) Azer GÖKMEN Garcinol (Garcinia Cambogia) Serkan GÜLCÜ Nar kabuğu (Punica Granatum) Orçun CAN Kişniş (Coriandrum Sativum) Nurbanu İNCİ Biberiye (Rosmorinus Officinalis) Pınar ÇOBAN EŞDUR Zencefil (Zingber Officinale) Nadiye SEVER Nane (Mentha Piperita) Okan AYDIN Papatya (Chammomilla Recutita) Buket ŞAHİN ÇELİK Zeytinyağı (Virgin Olive Oil) Hayriye TANİN DEMİRCİ Kekik (Thymus/ Thyme/ Thymus Vulgaris) Ahmet Emin ÖZTÜRK Ökse Otu (Mistletoe) Hacı ARAK Keçiboynuzu (Ceratonia Siliqua) Murad GULIYEV Hurma (Phoenix Dactylifera) Akif DOĞAN İncir (Ficus Carica) Erkam KOCAASLAN Sarımsak (Allium Sativum) ve Soğan (Allium Cepa) Ahmet AYDIN Sabin GÖKTAŞ AYDIN Kava Kava (Piper Methysticum) Yıldız GARİP BİLEN Meyan kökü (Glyctrrhiza Uralensis) Altay ALİYEV Sarı Kantaron (Hypericum Perforatum) Mustafa ERSOY Kedi Otu (Valeriana Officinalis) Mürsel SALİ Geven Otu (Astragalus) Harun MUĞLU Aloe Vera Emir Gökhan KAHRAMAN Kenevir (Cannabis) Alperen Akansel ÇAĞLAR Graviola Meyvesi ve Yaprağı (Annona Muricata Leaf) Seda SALİ Reişi Mantarı (Reishi Shiitake Maitake) Alper COŞKUN Likopen (Solanum Lycopersicum) Oğuzcan ÖZKAN Modifiye Narenciye Pektini (Pectin) Sümeyra DERİN Bayır Turbu (Armoracia Rusticana) Yasin SEZGİN Akgünlük (Boswellia Serrata) Esra Şazimet KARS Balık Yağı / Omega Yağları Nargiz MAJİDOVA Melatonin Aykut TURHAN Köpekbalığı Kıkırdağı Ömer GENÇ Hidrazin Doğan BAYRAM Koenzim Q10 Ekin KONCA KARABUĞA Resveratrol İbrahim BİLEN Timus Ekstresi Mehmet Cem FİDAN Bal ve Propolis Eyüp ÇOBAN Mineral Takviyesi Ömer Faruk ELÇİÇEK Kefir ve Kanser Melek ÖZDEMİR Alfa Lipoik Asit Hülya ODABAŞI BÜKÜN Glutatyon Fatma Pınar AÇAR Mavi Akrep Zehiri (Rhopalurus Junceus) Muslih ÜRÜN Spirulina Özge YALICI Chlorella Şermin DİNÇ SONUŞEN C Vitamini (Askorbik Asit) Murat GÜNALTILI Vitamin D Yunus Emre ALTINTAŞ A Vitamini ve Karotenler Tanju KAPAĞAN Vitamin E Güner AKGÜNER B6 Vitamini (Pridoksin) Erdem SÜNGER B12 Vitamini (Kobalamin) Goncagul AKDAG Folik Asit Selen KANTARCI KARATAŞ Multivitamin Kompleksleri Ezgi TÜRKOĞLU Ketojenik Diyet Ömer Faruk KUZU Akdeniz Diyeti Osman Bilge KAYA Aralıklı Oruç Ülviye OFLAS Vegan Beslenme Oğuzcan KINIKOĞLU Akupunktur Tedavisi Gülin Alkan ŞEN Yoga/Meditasyon Mehmet Nezir RAMAZANOĞLU Hypnotherapy Zeynep ALTUNDAĞ DERİN Aromatherapy Pınar PEKER Ayurveda Salih TÜNBEKİCİ Hacamat (Cupping Therapy) Mahmut KARA Ozon Tedavisi Murat ALAN üm Vücut Hipertermi (Whole Body Hyperthermia) Şaban SEÇMELER

Suleyman Gundogdu, J. Patrick Clancy, Guangyong Xu, Yang Zhao, Paul A. Dube, Tufan C. Karalar, Beong Ki Cho, Jeffrey W. Lynn, and M. Ramazanoglu 4 Physics Engineering Department, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1 Canada NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA Brockhouse Institute for Materials Research, Hamilton, ON L8S 4M1, Canada Electronics and Communication Engineering Department, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey Gwangju Institute of Science and Technology, GIST, S. Korea (Dated: August 9, 2020)

The rare earth magnetic order in pure and doped Ho (1− x ) Er x Ni 2 B 2 C (x = 0, 0.25, 0.50, 0.75, 1) single crystal samples was investigated using magnetization and neutron diffraction measurements. Superconducting quaternary borocarbides, R Ni 2 B 2 C where R = Ho, Er , are magnetic intermetallic superconductors with the transition temperatures ∼10 K in which long range magnetic order develops in the same temperature range and competes with superconductivity. Depending on the rare earth composition the coupling between superconductivity and magnetism creates several phases, ranging from a near reentrant superconductor with a mixture of commensurate and incommensurate antiferromagnetism to an incommensurate antiferromagnetic spin modulation with a weak ferromagnetic component. All of these phases coexist with superconductivity. RKKY magnetic interactions are used to describe the magnetic orders in the pure compounds. However, the doping of Er on Ho sites which have two strong magnetic moments with two different easy directions creates new and complicated magnetic modulations with possible local disorder effects. One fascinating effect is the development of an induced magnetic state resembling the pure and doped R 2 CuO 4 cuprate with R = Nd and Pr.

We study the quenched random disorder (QRD) effects created by aerosil dispersion in the octylcyanobiphenyl (8CB) liquid crystal (LC) using atomic force microscopy technique. Gelation process in the 8CB+aerosil gels yields a QRD network which also changes the surface topography. By increasing the aerosil concentration, the original smooth pattern of LC sample surfaces is suppressed by the emergence of a fractal aerosil surface effect and these surfaces become more porous, rougher and they have more and larger crevices. The dispersed aerosil also serves as pinning centers for the liquid crystal molecules. It is observed that via the diffusion-limited-aggregation process, aerosil nano-particles yield a fractal-like surface pattern for the less disordered samples. As the aerosil dispersion increases, the surface can be described by more aggregated regions, which also introduces more roughness. Using this fact, we show that there is a net correlation between the short-range ordered x-ray peak widths (the results of previous x-ray diffraction experiments) and the calculated surface roughness. In other words, we show that these QRD gels can also be characterized by their surface roughness values.

Bulk-boundary correspondence is the emergence of features at the boundary of a material that are dependent on and yet distinct from the properties of the bulk of the material. The diverse applications of this idea in topological insulators as well as high energy physics prove its universality. However, whether a form of bulk-boundary correspondence holds also in soft matter such as gels, polymers, lipids, and other biomaterials is thus far unknown. Aerosil-dispersed liquid crystal gels provide a good testing ground to explore the relation between the controlled variations of the aerosil density within the liquid crystal bulk and the surface topography of the sample. Here we report on a direct observation of such a correspondence where the controlled strength of random disorder created by aerosil dispersion in the bulk liquid crystal is correlated with the fractal dimension of the surface. We obtained the surface topography of our gel samples with different quenched random disorder strengths by using atomic force microscope techniques, and computed the fractal dimension for each sample. We found that an increase of the aerosil gel density in the bulk corresponds to an increase in the fractal dimension at the surface. From our results emerges a method to acquire the bulk properties of soft matter such as density, randomness, and phase merely from the fractal dimension of the surface.

Low temperature powder inelastic neutron scattering measurements were performed on three different powder samples; parent BaMn2As2,12.5% K-doped Ba0.875K0.125Mn2As2 and 25% K-doped Ba(0.75)K0.25Mn2As2. The Heisenberg Model involving J1‐J2‐Jz coupling constants were compared to the data by a powder integration routine using Monte Carlo integration methods. The best magnetic parameters were selected using a chi-square test where model intensities were compared to the full (q,E) dependence of magnetic scattering. A key step to this analysis is the characterization of the background which is formed mostly by phonon scattering intensities along with other sources including the magnetic impurity scattering events. The calculated powder magnetic intensities added to the estimated background obtained from the non-magnetic high momentum transfer region. The agreement between the simulated and the raw data enabled us to perform quantitative analysis of the unreacted MnO impurities. Overall, this is another confirmation along with earlier studies using this technique, that magnetic exchange constants can be calculated within an acceptable range with a very quick inelastic neutron powder experiment without need for a single crystal sample.

M. Ramazanoglu,1,2 B. G. Ueland,3 D. K. Pratt,4 L. W. Harriger,4 J. W. Lynn,4 G. Ehlers,5 G. E. Granroth,5 S. L. Bud’ko,3,6 P. C. Canfield,3,6 D. L. Schlagel,3 A. I. Goldman,3,6 T. A. Lograsso,3,7 and R. J. McQueeney3,6 1Physics Engineering Department, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey 2Brockhouse Institute for Materials Research, Hamilton, ON L8S 4M1 Canada 3Ames Laboratory, Ames, Iowa 50011, USA 4NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA 5Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA 6Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA 7Department of Materials Science and Engineering, Iowa State University, Ames, Iowa 50011, USA

Unconventional superconductivity (SC) often develops in magnetic metals on the cusp of static antiferromagnetic (AFM) order where spin fluctuations are strong. This association is so compelling that many SC materials are labeled as unconventional by proximity to an ordered AFM state. The Cr-Ru alloy system possesses such a phase diagram [see Fig. 1(a)]. Here we use inelastic neutron scattering to show that spin fluctuations are present in a SC Cr0.8Ru0.2 alloy (Tc=1.35 K). However, the neutron spin resonance, a possible signature of unconventional SC, is not observed. Instead, data indicate a spin gap of order 2Δ (the superconducting gap) and a suppression of magnetic spectral weight at energies well above 2Δ. The suppression decreases the magnetic exchange energy, suggesting that low energy spin fluctuations oppose the formation of SC. In conjunction with other experimental evidence, a possible scenario is that conventional SC sits on the cusp of AFM order in Cr-Ru alloys. Disciplines Condensed Matter Physics | Materials Science and Engineering Authors M. Ramazanoglu, Benjamin G. Ueland, D. K. Pratt, L. W. Harringer, J. W. Lynn, G. Ehlers, G. E. Granroth, Sergey L. Bud’ko, Paul C. Canfield, Deborah L. Schlagel, Alan I. Goldman, Thomas A. Lograsso, and Robert J. McQueeney This article is available at Iowa State University Digital Repository: https://lib.dr.iastate.edu/ameslab_manuscripts/334 PHYSICAL REVIEW B 98, 134512 (2018) Suppression of antiferromagnetic spin fluctuations in superconducting Cr0.8Ru0.2 M. Ramazanoglu,1,2 B. G. Ueland,3 D. K. Pratt,4 L. W. Harriger,4 J. W. Lynn,4 G. Ehlers,5 G. E. Granroth,5 S. L. Bud’ko,3,6 P. C. Canfield,3,6 D. L. Schlagel,3 A. I. Goldman,3,6 T. A. Lograsso,3,7 and R. J. McQueeney3,6 1Physics Engineering Department, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey 2Brockhouse Institute for Materials Research, Hamilton, ON L8S 4M1 Canada 3Ames Laboratory, Ames, Iowa 50011, USA 4NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA 5Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA 6Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA 7Department of Materials Science and Engineering, Iowa State University, Ames, Iowa 50011, USA (Received 26 July 2018; published 25 October 2018) Unconventional superconductivity (SC) often develops in magnetic metals on the cusp of static antiferromagnetic (AFM) order where spin fluctuations are strong. This association is so compelling that many SC materials are labeled as unconventional by proximity to an ordered AFM state. The Cr-Ru alloy system possesses such a phase diagram [see Fig. 1(a)]. Here we use inelastic neutron scattering to show that spin fluctuations are present in a SC Cr0.8Ru0.2 alloy (Tc = 1.35 K). However, the neutron spin resonance, a possible signature of unconventional SC, is not observed. Instead, data indicate a spin gap of order 2 (the superconducting gap) and a suppression of magnetic spectral weight at energies well above 2 . The suppression decreases the magnetic exchange energy, suggesting that low energy spin fluctuations oppose the formation of SC. In conjunction with other experimental evidence, a possible scenario is that conventional SC sits on the cusp of AFM order in Cr-Ru alloys. DOI: 10.1103/PhysRevB.98.134512

BaMn2As2 is an antiferromagnetic insulator where a metal-insulator transition occurs with hole doping via the substitution of Ba with K. The metal-insulator transition causes only a small suppression of the Neel temperature ( T-N) and the ordered moment, suggesting that doped holes interact weakly with the Mn spin system. Powder inelastic neutron scattering measurements were performed on three different samples of Ba1-x K-x Mn2As2 with x = 0, 0.125, and 0.25 to study the effect of hole doping and metallization on the spin dynamics. We compare the neutron intensities to a linear spin-wave theory approximation to the J(1)-J(2)-J(c) Heisenberg model. Hole doping is found to introduce only minor modifications to the exchange energies and spin gap. The changes observed in the exchange constants are consistent with the small drop of TN with doping.

The application of a magnetic field transverse to the easy axis, Ising direction in the quasi-two-dimensional kagome staircase magnet, Co3V2O8, induces three quantum phase transitions at low temperatures, ultimately producing a novel high field polarized state, with two distinct sublattices. New time-of-flight neutron scattering techniques, accompanied by large angular access, high magnetic field infrastructure allow the mapping of a sequence of ferromagnetic and incommensurate phases and their accompanying spin excitations. At least one of the transitions to incommensurate phases at mu H-0(c1) similar to 6.25 T and mu H-0(c2) similar to 7 T is discontinuous, while the final quantum critical point at mu H-0(c3) similar to 13 T is continuous.

Ca10(Pt3As8)(Fe2As2)5 is the parent compound for a class of Fe-based high-temperature superconductors where superconductivity with transition temperatures up to 30 K can be introduced by partial element substitution. We present a combined high-resolution high-energy x-ray diffraction and elastic neutron scattering study on a Ca10(Pt3As8)(Fe2As2)5 single crystal. This study reveals the microscopic nature of two distinct and continuous phase transitions to be very similar to other Fe-based high-temperature superconductors: an orthorhombic distortion of the high-temperature tetragonal Fe-As lattice below T_S = 110(2) K followed by stripe-like antiferromagnetic ordering of the Fe moments below T_N = 96(2) K. These findings demonstrate that major features of the Fe-based high-temperature superconductors are very robust against variations in chemical constitution as well as structural imperfection of the layers separating the Fe-As layers from each other and confirms that the Fe-As layers primarily determine the physics in this class of material.

The superconducting and magnetic properties of HoNi2B2C single crystals are investigated through transport, magnetometry and small-angle neutron scattering (SANS) measurements. In the magnetic phases that enter below the superconducting critical temperature, the small-angle neutron scattering data uncover networks of magnetic surfaces. These likely originate from uncompensated moments, e.g., at domain walls pinned to crystallo-graphic grain boundaries. The field and temperature dependent behavior of SANS appears consistent with the metamagnetic transitions reported in earlier works.

Charge-density-wave (CDW) correlations within the quintessential CuO$_2$ planes have been argued to either cause [1] or compete with [2] the superconductivity in the cuprates, and they might furthermore drive the Fermi-surface reconstruction in high magnetic fields implied by quantum oscillation (QO) experiments for YBa$_2$Cu$_3$O$_{6+{\delta}}$ (YBCO) [3] and HgBa$_2$CuO$_{4+{\delta}}$ (Hg1201) [4]. Consequently, the observation of bulk CDW order in YBCO was a significant development [5,6,7]. Hg1201 features particularly high structural symmetry and recently has been demonstrated to exhibit Fermi-liquid charge transport in the relevant temperature-doping range of the phase diagram, whereas for YBCO and other cuprates this underlying property of the CuO$_2$ planes is partially or fully masked [8-10]. It therefore is imperative to establish if the pristine transport behavior of Hg1201 is compatible with CDW order. Here we investigate Hg1201 ($T_c$ = 72 K) via bulk Cu L-edge resonant X-ray scattering. We indeed observe CDW correlations in the absence of a magnetic field, although the correlations and competition with superconductivity are weaker than in YBCO. Interestingly, at the measured hole-doping level, both the short-range CDW and Fermi-liquid transport appear below the same temperature of about 200 K. Our result points to a unifying picture in which the CDW formation is preceded at the higher pseudogap temperature by $q$ = 0 magnetic order [11,12] and the build-up of significant dynamic antiferromagnetic correlations [13]. Furthermore, the smaller CDW modulation wave vector observed for Hg1201 is consistent with the larger electron pocket implied by both QO [4] and Hall-effect [14] measurements, which suggests that CDW correlations are indeed responsible for the low-temperature QO phenomenon.

Electronic inhomogeneity appears to be an inherent characteristic of the enigmatic cuprate superconductors. Here we report the observation of charge–density–wave correlations in the model cuprate superconductor HgBa2CuO4+δ (Tc=72 K) via bulk Cu L3-edge-resonant X-ray scattering. At the measured hole-doping level, both the short-range charge modulations and Fermi-liquid transport appear below the same temperature of about 200 K. Our result points to a unifying picture in which these two phenomena are preceded at the higher pseudogap temperature by q=0 magnetic order and the build-up of significant dynamic antiferromagnetic correlations. The magnitude of the charge modulation wave vector is consistent with the size of the electron pocket implied by quantum oscillation and Hall effect measurements for HgBa2CuO4+δ and with corresponding results for YBa2Cu3O6+δ, which indicates that charge–density–wave correlations are universally responsible for the low-temperature quantum oscillation phenomenon. Charge–density–wave correlations, quantum oscillations and Fermi-liquid charge transport are at the centre of a heated debate in cuprate superconductivity. Using resonant X-ray scattering, Tabis et al. investigate the charge order and its link to the electronic transport properties in HgBa2CuO4+δ.

We report on the different roles of two orbital-active Fe2+ at theAsite and V3+ at the B site in themagnetic excitations and on the anomalous spin-wave broadening in FeV2O4. FeV2O4 exhibits three structural transitions and successive paramagnetic (PM)-collinear ferrimagnetic (CFI)-noncollinear ferrimagnetic (NCFI)/ferroelectric transitions. The high-temperature tetragonal/PM-orthorhombic/CFI transition is accompanied by the appearance of a large energy gap in the magnetic excitations due to strong spin-orbit-coupling-induced anisotropy at the Fe2+ site. While there is no measurable increase in the energy gap from the orbital ordering of V3+ at the orthorhombic/CFI-tetragonal/NCFI transition, anomalous spin-wave broadening is observed in the orthorhombic/CFI state due to V3+ spin fluctuations at the B site. The spin-wave broadening is also observed at the zone boundary without softening in the NCFI/ferroelectric phase, which is discussed in terms of magnon-phonon coupling. Our study also indicates that the Fe2+ spins without the frustration at the A site may not play an important role in inducing ferroelectricity in the tetragonal/NCFI phase of FeV2O4.