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Due to its low atomic mass hydrogen is the most promising element to search for high-temperature phononic superconductors. However, metallic phases of hydrogen are only expected at extreme pressures (400 GPa or higher). The measurement of a…

Superconductivity · Physics 2016-03-23 José A. Flores-Livas , Antonio Sanna , E. K. U. Gross

Here, we report the magneto-conductivity (up to 14Tesla and down to 5K) analysis of Bi2Te3 single-crystal. A sharp magneto-conductivity (MC) rise (inverted v-type cusp) is observed near H=0 due to the weak antilocalization (WAL) effect,…

Materials Science · Physics 2021-03-17 Yogesh Kumar , Rabia Sultana , V. P. S. Awana

We investigate the magnetotransport properties of the one-band Hubbard-Holstein model at half-filling in three dimensions (3D) using exact diagonalization based semi-classical Monte Carlo simulations with phonons treated in the adiabatic…

Strongly Correlated Electrons · Physics 2026-04-21 Sandip Halder , Moshe Schechter

The chiral helimagnet Cr1/3NbS2 has been investigated by magnetic, transport and thermal properties measurements on single crystals and by first principles electronic structure calculations. From the measured field and temperature…

Strongly Correlated Electrons · Physics 2015-03-25 N. J. Ghimire , M. A. McGuire , D. S. Parker , B. Sipos , S. Tang , J. -Q. Yan , B. C. Sales , D. Mandrus

In this work we present an experimental study of structure and phase stability in ternary Cu-Sn-In alloys around 55 at.% Cu in the temperature range 100^{\circ}C < T < 550^{\circ}C. We have followed in real-time the sequence of phase…

Materials Science · Physics 2015-06-05 G. Aurelio , S. A. Sommadossi , G. J. Cuello

The low temperature properties of the Kagome-type system Co3V2O8 have been studied by powder neutron diffraction both in zero field and in applied magnetic field of up to 8 T. Below 6 K, the zero-field ground state is ferromagnetic with the…

Materials Science · Physics 2007-05-23 N. R. Wilson , O. A. Petrenko , L. C. Chapon

The experimental studies of the paramagnetic-antiferromagnetic phase transition through M\"{o}ssbauer spectroscopy and measurements of temperature and field dependencies of magnetic susceptibility in the layered Cu$_{0.15}$Fe$_{0.85}$PS$_3$…

Computational Physics · Physics 2023-01-05 V. Pashchenko , O. Bludov , D. Baltrunas , K. Mazeika , S. Motria , K. Glukhov , Yu. Vysochanskii

The interplay between thermal and quantum fluctuations controls the competition between phases of matter in strongly correlated electron systems. We study finite-temperature properties of the strongly coupled two-dimensional doped Hubbard…

Strongly Correlated Electrons · Physics 2021-07-21 Alexander Wietek , Yuan-Yao He , Steven R. White , Antoine Georges , E. Miles Stoudenmire

In order to study the phase diagram from a microscopic viewpoint, we have measured wTF- and ZF-$\mu^+$SR spectra for the Sr$_{1-x}$Ca$_x$Co$_2$P$_2$ powder samples with $x=0$, 0.2, 0.4, 0.5, 0.6, 0.8, and 1. Due to a characteristic time…

Strongly Correlated Electrons · Physics 2015-06-22 J. Sugiyama , H. Nozaki , I. Umegaki , M. Harada , Y. Higuchi , E. J. Ansaldo , J. H. Brewer , M. Imai , C. Michioka , K. Yoshimura , M Månsson

We have performed de Haas-van Alphen (dHvA) measurements of the heavy-fermion superconductor CeCoIn$_5$ down to 2 mK above the upper critical field. We find that the dHvA amplitudes show an anomalous suppression, concomitantly with a shift…

Strongly Correlated Electrons · Physics 2018-04-30 Hiroaki Shishido , Shogo Yamada , Kaori Sugii , Masaaki Shimozawa , Youichi Yanase , Minoru Yamashita

We investigate spatially inhomogeneous solutions in a top-down holographic model: the D3/D7 model which provides a holographic description of the chiral phase transition for a finite external magnetic field, chemical potential, and…

High Energy Physics - Theory · Physics 2024-05-28 Shuta Ishigaki , Masataka Matsumoto , Ryosuke Yoshii

We study the Holstein-Hubbard model at half filling to explore ordered phases including su- perconductivity (SC), antiferromagnetism (AF), and charge order (CO) in situations where the electron-electron and electron-phonon interactions are…

Strongly Correlated Electrons · Physics 2015-06-16 Yuta Murakami , Philipp Werner , Naoto Tsuji , Hideo Aoki

Magneto-transport measurements have been carried out on Bi2-xSbxSe3 (x = 0, 0.05, 0.1, 0.3, 0.5) single crystals at 4.2 K temperature in the magnetic field range of -15 T to 15 T. Shubnikov-de Haas (SdH) oscillations of 2D nature were…

Materials Science · Physics 2016-05-16 T. R. Devidas , E. P. Amaladass , Shilpam Sharma , Awadhesh Mani , R. Rajaraman , C. S. Sundar , A. Bharathi

Co$_3$Sn$_2$S$_2$, a Weyl semimetal that consists of layers of Kagome lattices, transitions from a high-temperature paramagnetic phase to a low-temperature ferromagnetic phase below 177 K. The phase transition occurs through an intermediate…

Materials Science · Physics 2020-12-30 Sandeep Howlader , Ranjini Ramachandran , Shama , Yogesh Singh , Goutam Sheet

Long needle-shaped single crystals of Zn1-xCoxO were grown at low temperatures using a molten salt solvent technique, up to x=0.10. The conduction process at low temperatures is determined to be by Mott variable range hopping. Both pristine…

Materials Science · Physics 2013-06-13 N. Sharma , S. Granville , S. C. Kashyap , J. -Ph. Ansermet

The magnetic field (H) - temperature (T) phase diagram of a superconductor is significantly altered when domains are present in an underlying ferromagnet with perpendicular magnetic anisotropy. When the domains have a band-like shape, the…

Superconductivity · Physics 2009-11-10 M. Lange , M. J. Van Bael , V. V. Moshchalkov

Based on the experimental observation, that only the close vicinity of a magnetic impurity at metal surfaces determines its Kondo behaviour, we introduce a simple model which explains the Kondo temperatures observed for cobalt adatoms at…

Strongly Correlated Electrons · Physics 2009-11-10 P. Wahl , L. Diekhöner , M. A. Schneider , L. Vitali , G. Wittich , K. Kern

We have systematically measured resistivity, susceptibility and specific heat under different magnetic fields (H) in Eu$_{1-x}$La$_x$Fe$_2$As$_2$ single crystals. It is found that a metamagnetic transition from A-type antiferromagnetism to…

Superconductivity · Physics 2015-05-13 T. Wu , G. Wu , H. Chen , Y. L. Xie , R. H. Liu , X. F. Wang , X. H. Chen

The low-temperature thermal conductivity (\kappa) of GdFeO_3 single crystals is found to be strongly dependent on magnetic field. The low-field \kappa (H) curves show two "dips" for H \parallel a and only one "dip" for H \parallel c, with…

Strongly Correlated Electrons · Physics 2011-01-25 Z. Y. Zhao , X. M. Wang , C. Fan , W. Tao , X. G. Liu , W. P. Ke , F. B. Zhang , X. Zhao , X. F. Sun

We report on imaging of the nonuniform superconducting states in a Pb thin film bridge on top of a ferromagnetic BaFe_{12}O_{19} single crystal with a single straight domain wall along the center of the bridge by low-temperature scanning…