699 citations · 4.6k across the 92 of their papers we have counts for
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Magnetic and superconducting anisotropy in Ni-doped RbEuFeAs single crystals
K. Willa, M. P. Smylie, Y. Simsek +5
We investigate the effect of Ni doping on the Fe-site in single crystals of the magnetic superconductor RbEuFeAs for doping concentrations of up to 4%. A clear suppression…
Melting of vortex lattice in magnetic superconductor
A. E. Koshelev, K. Willa, R. Willa +6
The iron-based superconductors are characterized by strong fluctuations due to high transition temperatures and small coherence lengths. We investigate fluctuation behavior in the…
Anisotropic upper critical field of pristine and proton-irradiated single crystals of the magnetically ordered superconductor RbEuFeAs
M. P. Smylie, A. E. Koshelev, K. Willa +12
We present a study of the upper critical field, H, of pristine and proton-irradiated RbEuFeAs crystals in pulsed magnetic fields of up to 65 T. The data for H…
Pressure-temperature phase diagram of EuRbFeAs superconductor
Li Xiang, Sergey L. Bud'ko, Jin-Ke Bao +3
The pressure dependencies of the magnetic and superconducting transitions, as well as that of the superconducting upper critical field are reported for single crystalline EuRbFe$_4…
Strongly fluctuating moments in the high-temperature magnetic superconductor RbEuFeAs
K. Willa, R. Willa, J. -K. Bao +5
We report detailed specific heat measurements on the recently discovered magnetic superconductor RbEuFeAs. We investigated the superconducting transition at 37K and extract…
Dirac surface states in superconductors: a dual topological proximity effect
Nicholas Sedlmayr, E. W. Goodwin, Michael Gottschalk +12
In this paper we present scanning tunneling microscopy of BiSe with superconducting Nb deposited on the surface. We find that the topologically protected surface states of…
Pressure dependence of coherence-incoherence crossover behavior in KFe2As2 observed by resistivity and 75As-NMR/NQR
P. Wiecki, V. Taufour, D. Y. Chung +4
We present the results of As nuclear magnetic resonance (NMR), nuclear quadrupole resonance (NQR), and resistivity measurements in KFeAs under pressure (). The te…
Spin Quenching Assisted by a Strongly Anisotropic Compression Behavior in MnP
Fei Han, Di Wang, Yonggang Wang +12
We studied the crystal structure and spin state of MnP under high pressure with synchrotron X-ray diffraction and X-ray emission spectroscopy. MnP has an exceedingly strong anisotr…
Superconductivity and multiple pressure-induced phases in BaPtAs
C. Y. Guo, W. B. Jiang, M. Smidman +8
The newly discovered BaPtAs shows a structural distortion at around 275~K, followed by the emergence of superconductivity at lower temperatures. Here we identify the presen…
Scanning tunneling microscopy of superconducting topological surface states in BiSe
Ian M. Dayton, Nicholas Sedlmayr, Victor Ramirez +5
In this paper we present scanning tunneling microscopy of a large crystal with superconducting PbBi islands deposited on the surface. Local density of…
Tetragonal magnetic phase in BaKFeAs from x-ray and neutron diffraction
Jared M. Allred, Sevda Avci, Duck Young Chung +8
Combined neutron and x-ray diffraction experiments demonstrate the formation of a low-temperature minority tetragonal phase in BaKFeAs in addition to the…
Coincident structural and magnetic order in BaFe(As)P) revealed by high-resolution neutron diffraction
Jared M. Allred, Keith M. Taddei, Daniel E. Bugaris +8
We present neutron diffraction analysis of BaFe(AsP) over a wide temperature (10 to 300 K) and compositional () range, including the norm…
Point contact spectroscopy in the superconducting and normal state of
H. Z. Arham, D. E. Bugaris, D. Y. Chung +2
We use point contact spectroscopy to probe the superconducting and normal state properties of the iron-based superconductor with $\rm{\t…
Heat capacity jump at T_c and pressure derivatives of superconducting transition temperature in the Ba(1-x)NaxFe2As2 (0.1 <= x <= 0.9) series
Sergey L. Bud'ko, Duck Young Chung, Daniel Bugaris +3
We present the evolution of the initial (up to ~ 10 kbar) hydrostatic, pressure dependencies of T_c and of the ambient pressure jump in the heat capacity associated with the superc…
Structural, Magnetic, and Superconducting Properties of Ba1-xNaxFe2As2
Sevda Avci, Jared M. Allred, Omar Chmaissem +11
We report the results of a systematic investigation of the phase diagram of the iron-based superconductor system, Ba1-xNaxFe2As2, from x = 0.1 to x = 1.0 using high resolution neut…
Heat capacity jump at Tc and pressure derivatives of superconducting transition temperature in the Ba1-xKxFe2As2 (0.2 < x < 1.0) series
Sergey L. Bud'ko, Mihai Sturza, Duck Young Chung +2
We present the evolution of the initial (up to ~ 10 kbar) hydrostatic, pressure dependencies of Tc and of the ambient pressure jump in the heat capacity associated with the superco…
Phase relations in K_xFe_{2-y}Se_2 and the structure of superconducting K_xFe_2Se_2 via high-resolution synchrotron diffraction
Daniel P. Shoemaker, Duck Young Chung, Helmut Claus +4
Superconductivity in iron selenides has experienced a rapid growth, but not without major inconsistencies in the reported properties. For alkali-intercalated iron selenides, even t…
Phase Diagram of Ba1-xKxFe2As2
Sevda Avci, Omar Chmaissem, Duck-Young Chung +10
We report the results of a systematic investigation of the phase diagram of the iron-based superconductor, Ba1-xKxFe2As2, from x = 0 to x = 1.0 using high resolution neutron and x-…
Magnetoelastic Coupling in the Phase Diagram of Ba1-xKxFe2As2
Sevda Avci, Omar Chmaissem, Eugene A. Goremychkin +10
We report a high resolution neutron diffraction investigation of the coupling of structural and magnetic transitions in Ba1xKxFe2As2. The tetragonal-orthorhombic and antiferromagne…
Influence of Magnetism on Phonons in CaFe2As2 Via Inelastic X-ray Scattering
S. E. Hahn, Y. Lee, N. Ni +10
In the iron pnictides, the strong sensitivity of the iron magnetic moment to the arsenic position suggests a significant relationship between phonons and magnetism. We measured the…