Specific Heat and Tunneling Spectroscopy Study of NbB_2 with Maximum T_c〜10K(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
スポンサーリンク
概要
- 論文の詳細を見る
We report on magnetic, transport, specific heat and tunneling measurements of NbB_2 with the maximum superconducting critical temperature T_c〜10K. The essential superconducting properties have been investigated through mapping out the critical field phase diagram, from which it is turned out to be type II superconductor with a small Ginzbrug-Landau parameter κ〜2.2. Both the tunneling and specific heat measurements indicate that our NbB_2 specimen has a single gap and s-wave pairing symmetry with a weak-coupling limit. The electron-phonon coupling constant is estimated to be λ_<ep>=0.71±0.02, suggesting that the maximum T_c of NbB_2 can be explained by the McMillan formula.
- 社団法人日本物理学会の論文
- 2007-09-15
著者
-
AKIMITSU Jun
Department of Physics, Aoyama Gakuin University
-
SUGIMOTO Akira
Graduate School of Integrated Arts and Sciences, Hiroshima University
-
EKINO Toshikazu
Graduate School of Integrated Arts and Sciences, Hiroshima University
-
Akimitsu Jun
Department Of Physics And Mathematics Aoyama Gakuin University
-
Ekino Toshikazu
Graduate School Of Integrated Arts And Sciences Hiroshima University
-
KUROIWA Sogo
Department of Physics and Mathematics, Aoyama Gakuin University
-
Kuroiwa Sogo
Department Of Physics And Mathematics Aoyama Gakuin University
-
Tomita Yoko
Department Of Physics Chiba University
-
Tomita Yoko
Department Of Physics And Mathematics Aoyama Gakuin University
-
Sugimoto Akira
Graduate School Of Integrated Arts And Sciences Hiroshima University
-
Ekino Toshikazu
Graduate School of Advanced Sciences of Matter, Hiroshima University:Faculty of Integrated Arts and Sciences, Hiroshima University
-
Tomita Yoko
Department of Applied Chemistry, Yamanashi University
関連論文
- Anomalous Spin Density Distribution in CeB_6
- Antiferromagnetic Ordering in the Spin Ladder Compound; Sr_Ca_xCu_O_
- Antiferromagnetic Ordering in the Spin Singlet State of the Ladder/Chain Material:Sr_Ca_Cu_O_
- Superconducting State of Silver-Oxide Clathrate Ag_6O_8AgNO_3(Condensed matter: electronic structure and electric, magnetic, and optical properties)
- Superconductivity in Boron-doped SiC(Condensed matter : electronic structure and electrical, magnetic, and optical properties)
- Crystal Structure and Charge-Ordering in La_Ca_CoO_4 Studied by Neutron and Resonant X-ray Scattering(Condensed matter: structure and mechanical and thermal properties)
- Infrared Absorption Study of Ca_Na_xCuO_2X_2 (X=Cl, Br)
- Raman Scattering Study of Sr_Ca_xCu_O_ : Electronic Properties, etc.
- Raman Scattering Study of Phonon and Magnetic Excitations along the Magnetic Chain in CuGeO_3
- Absence of the Dielectric Anomaly at T_sp of CuGeO_3
- Raman Scattering of CuGeO_3
- Space-Group Determination of a New Superconductor (Nd_Ce_x)_2(Ba_Nd_y)_2Cu_3O_ using Convergent-Beam Electron Diffraction
- Space-Group Determination of a New Superconductor (Nd_Sr_Ce_)_2CuO_ Using Convergent-Beam Electron Diffraction
- Superconductivity in the Nd-Sr-Ce-Cu-O System : Electrical Properties of Condensed Matter
- Successive Magnetic Phase Transitions in Nd_2CuO_4
- Long Period Structures in the Bi-Sr-Cu-O System : Electrical Properties of Condensed Matter
- Crystal Substructure of the Bi-Sr-Cu-O System : Electrical Properties of Condensed Matter
- Superconductivity in the Bi-Sr-Cu-O System
- High-T_c Superconductivity of Y-Ba-Cu-O System
- Direct Observation of Orbital Ordering in YTiO_3 by Means of the Polarized Neutron Diffraction Technique
- Submillimeter Wave ESR Study of Spin Gap Excitations in CuGeO_3
- Vibrational Spectroscopy of Superconducting MgB_2 by Neutron Inelastic Scattering : Condensed Matter: Electronic Properties, etc.
- μSR Studies on Spin-Peierls System Cu_Zn_xGeO_3 (x=0, 0.01, 0.03, and 0.07)
- Nanoscale Modulation of Local Barrier Height on Bi-based Cuprate Superconductors Observed by Scanning Tunneling Microscopy/Spectroscopy(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
- Spin and Charge Orders and Their Hole-Doping Dependence in Single Layered Cobaltate La_Ca_xCoO_4 (0.3≦x≦0.8)(Condensed matter : electronic structure and electrical, magnetic, and optical properties)
- SUPERCONDUCTIVITY IN Sr(Ln)-Nb-O SYSTEM (Ln:La,Nd,Pr,Ce,Gd, AND Ho)
- A New Non-Cu-Oxide Superconductor : (Sr_Ln_x)Nb_2O_(Ln:La,Nd,Pr and Ce)
- A New Non-Cu-Oxide Superconductor: (Sr_Ln_x) Nb_2O_(Ln: La, Nd, Pr and Ce)
- Planar Defects in the New Superconducting Oxide (Eu_Ce_x)_2(Ba_Eu_y)_2Cu_3O_z Observed by High-Resolution Transmission Electron Microscopy
- A New Family Superconducting Copper Oxides : (Ln_Ce_x)_2(Ba_Ln_y)_2Cu_3O_(Ln:Nd,Sm,EU)
- Nonstoichiometry and Mixed Pr Valency in (Pr_Sr_x)(Pr_Ce_y)CuO_
- Nonstoichiometry and Mixed Pr Valency in (Pr_Sr_x)(Pr_Ce_y)CuO_
- Magnetic Excitations in the Si Doped Spin-Peierls Compound CuGe_1-xSi_xO_3
- Ultrasonic Investigation of a Two-Dimensional Triangular Lattice Ferrimagnet, ErFe_2 O_ Single Crystal
- Anisotropy of Dielectric Dispersion in ErFe_2O_4 Single Crystal
- Dielectric Relaxation and Hopping of Electrons in ErFe_2O_4
- V^^51 Knight Shift and Quardrupole Interaction in the Low-Temperature Phase of LIVO_2
- ^V Knight Shift and Quadrupole Interaction in the Low-Temperature Phase of LiVO_2
- Bonding Nature in MgB_2
- S=1/2 Degrees of Freedom in Haldane System Y_2BaNiO_5 Observed by Submillimeter Wave ESR
- The Observation of g-Shifts in Spin-Peierls Material CuGEO_3 by Submillimeter Wave ESR
- Electron Spin Resonance of Spin-Peierls Material CuGeO_3
- Neutron Scattering Studies on Spin-Peierls Material CuGeO_3
- Quasiparticle Electronic Structure of a New Surperconductor, Y_2C_3, in the Mixed State Investigated by Specific Heat and Flux-Flow Resistivity(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
- Electrical Resistivity of Y_2C_3 Investigated by Microwave Surface Impedance Measurement(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
- Pressure Effects on the Antiferromagnetic Ordering in Pr_2CuO_
- Commensurate to Incommensurate Transition in the Chiral Helimagnet CuB_2O_4(Condensed matter : electronics structure and electrical, magnetic, and optical properties)
- Chiral Magnetic Ordering and Commensurate-to-Incommensurate Transition in CuB_2O_4(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
- Coexistence of Superconductivity and Magnetism in the Tm-Based Reentrant Superconductor Tm_5Rh_6Sn_
- Quasiparticle Excitations outside the Vortex Cores in MgB_2 Probed by Muon Spin Rotation(Condensed Matter : Electric Structure, Electical, Magnetic and Optical Properties)
- Quasiparticle Excitations outside the Vortex Cores in MgB_2 Probed by Muon Spin Rotation
- Observation of an Antiferromagnetic Phase in the Bi_2Sr_2CuO_ System by the μ^+SR Technique
- Nd Ion Doping Effects on the Multipolar Interactions in CeB_6(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
- Nd Ion Doping Effects on the Multipolar Interactions in CeB_6
- High-Pressure Transport Properties of the Superconducting Spin-Ladder System Sr_Ca_xCu_O_
- Superconductivity in the Ladder Material Sr_Ca_Cu_O_
- Spin Dynamics of 4f Electrons in CeB_6 Studied by Muon Spin Relaxation : Condensed Matter: Electronic Properties, etc.
- Spatially Modulated Antiferromagnetism in Sr_Ca_Cu_O_ Probed by Muon Spin Relaxation : Condensed Matter: Electronic Properties, etc.
- Neutron Scattering Study of Magnetic Excitations in the Spin S=1 One-Dimensional Heisenberg Antiferromagnet Y_2BaNiO_5
- Observation of the Haldane Gap in Y_2BaNiO_5 Single Crystal
- Structure Refinements of Orthorhombic (La_Ca_x)_2CuO_4 (x=0.05)
- Orbital Ordering in Ferromagnetic Lu_2V_2O_7(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
- Full Gap Superconductivity in Ba_K_Fe_2As_2 Probed by Muon Spin Rotation(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
- Electronic Structures of CaAlSi with Different Stacking AlSi Layers by First-Principles Calculations(Condensed matter : electronic structure and electrical, magnetic, and optical properties)
- Correlation between Superconducting Carrier Density and Transition Temperature in NbB_(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
- Unconventional Behavior of Field-induced Quasiparticle Excitation in Ca(Al_Si_)_2(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
- Magnetic Properties in Phase IV of Ce_La_B_6 Studied by Muon Spin Relaxation
- Unusual Magnetic Properties of the D+AF and M+AF Phases in CuCe_Si_xO_3
- Conventional s-Wave Superconductivity in Noncentrosymmetric Ir_2Ga_9 : ^Ga-NQR Evidence
- Coexistence of Superconductivity and (Anti-) Ferromagnetism in RuSr_2YCu_2O_8 : Condensed Matter: Electronic Properties, etc.
- Observation of Phase Transition with Lattice Distortion in the Low-dimensional Quantum Spin System TiOBr by Synchrotron X-ray Diffraction : Evidence of Spin-Peierls Transition?(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Prop
- Hole-induced Novel Spin State within Haldane Gap in Nd_Ca_xBaNiO_5(Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties)
- Multiple-Gap Features from Break-Junction Tunneling in the Superconducting MgB_2(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
- The Superconductivity in Re-B System (Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties)
- The Superconductivity in Re-B System
- Specific Heat and Tunneling Spectroscopy Study of NbB_2 with Maximum T_c〜10K(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
- Superconductivity of Y_2C_3 Investigated by Specific Heat Measurement(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
- Superconductivity in the Bi_2Sr_Ln_xCu_2O_y System and the Excess of Hole Concentration in Bi_2Sr_2Ca_nCu_O_y (n=0 and 1)
- TUNNELING SPECTROSCOPY ON HIGH-T c SUPERCONDUCTORS
- Superconducting State of the Binary Boride Ru_7B_3 with the Noncentrosymmetric Crystal Structure
- The Superconductivity in the Bi-Sr-Ln-Cu-O System (Ln=Pr, Nd and La) : Electrical Properties of Condensed Matter
- Supereondueting Tunneling in Y-Ba-Cu-O System
- Tunneling Spectroscopy of Copper-Oxide Superconductors : III-A Superconducting Characteristics : III Oxide Superconductors, Experiments III : Superconducting State
- Transport Properties of New High-T_c Superconductors Ln_Ce_xBa_Cu_3O_(Ln = Nd, Eu)
- Observations of Superconducting Tunnel Conductance Structures in YBa_2Cu_3O_ Tunnel Junctions
- Electron Tunneling Study of NbSe_3 : II. LOW TEMPERATURE PROPERTIES OF SOLIDS : Charge Density Waves
- NMR and Neutron Scattering Studies of Quasi One-Dimensional Magnet CuV_2O_6 : Electronic Properties, etc.
- Superconducting Energy Gap in BaPb_Bi_xO_3 Determined from Point-Contact Tunneling
- New Material Design of Cu-Oxide Superconductors : I-A New Materials and Material Design : I. Oxide Superconductors, Experiments I : Material Syntheses and Crystal Structures
- Orbital Fluctuations in Ground State of YTiO_3 : ^Ti NMR Study(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
- Thermodynamic Properties of the Non-centrosymmetric Type-I Superconductor Rh_2Ga_9 and Ir_2Ga_9(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
- Superconductivity in the Ternary Germanide Y_3Pt_4Ge_6(Condensed matter : electronic structure and electrical, magnetic, and optical properties)
- Superconductivity in MgB_2 and Its Related Materials(Spin, Orbital, Charge and Lattice Coupled Systems, Field-Induced Phase Transitions and Dynamics in Quantum Spin Systems)
- Superconductivity in Intermetallic W_7Re_X(X=B and C) Compounds(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
- Superconductivity at 18K in Yttrium Sesquicarbide System, Y_2C_3 (Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties)
- B K Emission Spectra for MgB_2 and Al-doped MgB_2
- B K Emission Spectra for MgB_2 and Al-doped MgB_2
- Electron Diffraction Study of an Inorganic Spin-Peierls System CuGeO_3
- Synthesis and Magnetic Properties of Conjugated Radical Polymer
- Discovery of the new superconductor MgB_2 and its recent development