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The newly discovered CaFe$_4$As$_3$ system displays low-temperature Fermi liquid behavior, with enhanced electron-electron correlations. At high temperatures, the magnetic susceptibility shows Curie-Weiss behavior, with a large…

Strongly Correlated Electrons · Physics 2009-04-28 Liang L. Zhao , Tanghong Yi , James C. Fettinger , Susan M. Kauzlarich , E. Morosan

The charge density wave (CDW) in ZrTe3 is quenched in samples with small amount of Te iso-electronically substituted by Se. Using angle-resolved photoemission spectroscopy we observe subtle changes in the electronic band dispersions and…

We investigate the thermal-driven charge density wave (CDW) transition of two cubic superconducting intermetallic systems Lu(Pt1-xPdx)2In and (Sr1-xCax)3Ir4Sn13 by means of x-ray diffraction technique. A detailed analysis of the CDW…

Strongly Correlated Electrons · Physics 2020-05-27 F. B. Carneiro , L. S. I. Veiga , J. R. L. Mardegan , R. Khan , C. Macchiutti , A. Lopez , E. M. Bittar

The effect of hydrostatic pressure (P) on charge density waves (CDW) in YBa2Cu3Oy has recently been controversial. Using NMR, we find that both the short-range CDW in the normal state and the long-range CDW in high fields are, at most,…

Superconductivity · Physics 2019-09-05 I. Vinograd , R. Zhou , H. Mayaffre , S. Krämer , R. Liang , W. N. Hardy , D. A. Bonn , M. -H. Julien

The existence of exchange-coupled Ni$^{2+}$ ions -- the so-called magnetic dimers -- in wolframite-type NiWO$_4$ and Zn$_c$Ni$_{1-c}$WO$_4$ solid solutions with high nickel content was discovered by X-ray absorption spectroscopy combined…

Materials Science · Physics 2021-08-09 G. Bakradze , A. Kalinko , A. Kuzmin

The magnetic properties of Li_{1-x}Ni_{1+x}O_2 compounds with x ranging between 0.02 and 0.2 are investigated. Magnetization and ac susceptibility measured at temperatures between 2 K and 300 K reveal a high sensitivity to x, the excess…

Materials Science · Physics 2009-10-31 D. Mertz , Y. Ksari , F. Celestini , J. M. Debierre , A. Stepanov , C. Delmas

We report on depinning of nearly-commensurate charge-density waves in 1T-TaS2 thin-films at room temperature. A combination of the differential current-voltage measurements with the low-frequency noise spectroscopy provide unambiguous means…

Mesoscale and Nanoscale Physics · Physics 2024-06-19 A. Mohammadzadeh , A. Rehman , F. Kargar , S. Rumyantsev , J. M. Smulko , W. Knap , R. K. Lake , A. A. Balandin

Charge density wave (CDW) phases are symmetry-reduced states of matter in which a periodic modulation of the electronic charge frequently leads to drastic changes of the electronic spectrum, including the emergence of energy gaps. We…

Mesoscale and Nanoscale Physics · Physics 2017-06-30 Bahadur Singh , Chuang-Han Hsu , Wei-Feng Tsai , Vitor M. Pereira , Hsin Lin

The discovery of a charge density wave (CDW) in the antiferromagnetic kagome metal FeGe has prompted interest in the interplay between kagome physics, CDW, and magnetism. However, a crucial aspect for understanding these emergent…

Materials Science · Physics 2025-01-30 Hengxin Tan , Binghai Yan

The effect of disorder on the static and dynamic behaviour of one-dimensional charge density waves at low temperatures is studied by analytical and numerical approaches. In the low temperature region the spatial behaviour of the phase-phase…

Statistical Mechanics · Physics 2009-11-07 Andreas Glatz , Sanjay Kumar , Mai Suan Li

The effects of Ni substitution on Ce(Cu1-xNix)2Si2 have been studied by specific heat and electrical resistivity measurements. The specific heat measurement has revealed that the enhanced quantum fluctuations around an antiferromagnetic…

Strongly Correlated Electrons · Physics 2015-06-05 Yoichi Ikeda , Shingo Araki , Tatsuo C. Kobayashi , Yusei Shimizu , Tatsuya Yanagisawa , Hiroshi Amitsuka

An inelastic neutron scattering study of the lattice dynamics of the martensite phase of the ferromagnetic shape memory alloy, Ni2MnGa, reveals the presence of well-defined phasons associated with the charge density wave (CDW) resulting…

Materials Science · Physics 2015-06-25 S. M. Shapiro , P. Vorderwisch , K. Habicht , K. Hrdil , H. Schneider

The incommensurate charge density wave states (CDWs) can exhibit steady motion in the flow limit after depinning, behaving as a nonequilibrium system with time-dependent states. Since the moving CDW, like an electric current, breaks both…

Mesoscale and Nanoscale Physics · Physics 2025-01-07 Ying-Ming Xie , Hiroki Isobe , Naoto Nagaosa

Polycrystalline samples of Lu{1-x}Sc{x}MnSi (x= 0, 0.25, 0.50) are studied using powder x-ray diffraction (XRD), heat capacity Cp, magnetization M, magnetic susceptibility chi, and electrical resistivity rho measurements versus temperature…

Strongly Correlated Electrons · Physics 2014-08-20 R. J. Goetsch , V. K. Anand , D. C. Johnston

We study theoretically the low-temperature phases of a two-component atomic Fermi gas with attractive s-wave interactions under conditions of rapid rotation. We find that, in the extreme quantum limit, when all particles occupy the lowest…

Mesoscale and Nanoscale Physics · Physics 2007-11-17 Gunnar Moller , Nigel R. Cooper

Using angle-resolved photoemission, we have investigated the development of the electronic structure and the Fermi level pinnning in Ga$_{1-x}$Mn$_{x}$As with Mn concentrations in the range 1--6%. We find that the Mn-induced changes in the…

Materials Science · Physics 2009-11-07 H. Asklund , L. Ilver , J. Kanski , J. Sadowski , R. Mathieu

We employed a scanning tunneling microscope to image the (001) surface topography and local density of states (LDOS) in La$_{2-2x}$Sr$_{1+2x}$Mn$_2$O$_7$ (x=0.32, LSMO) single crystals below the Curie temperature (T$_C$ = 120 K). The LDOS…

Strongly Correlated Electrons · Physics 2015-06-15 Jeehoon Kim , Junwei Huang , J. -S. Zhou , J. B. Goodenough , J. F. Mitchell , Alex de Lozanne

We investigate the magnetic properties of spin-$1/2$ charged Fermi gases with ferromagnetic coupling via mean-field theory, and find the interplay among the paramagnetism, diamagnetism and ferromagnetism. Paramagnetism and diamagnetism…

Statistical Mechanics · Physics 2016-01-15 Baobao Wang , Jihong Qin , Huaiming Guo

Despite the recent discovery of superconductivity in Nd$_{1-x}$Sr$_{x}$NiO$_2$ thin films, the absence of superconductivity and antiferromagnetism in their bulk materials remain a puzzle. Here we report the $^{1}$H NMR measurements on…

Superconductivity · Physics 2021-05-31 Yi Cui , C. Li , Q. Li , Xiyu Zhu , Z. Hu , Yi-feng Yang , J. S. Zhang , Rong Yu , Hai-Hu Wen , Weiqiang Yu

In the self-consistent approximation for the two-dimensional mean-field model we found an analytic solution for the ground state with a coexisting d-wave symmetric bond ordered pair density wave (PDW) and spin (SDW) or charge (CDW) density…

Strongly Correlated Electrons · Physics 2025-03-27 S. I. Matveenko , S. I. Mukhin