285 citations · 1.7k across the 28 of their papers we have counts for
28 papers
Photoemission Spectroscopic Evidence for the Dirac Nodal Line in Monoclinic Semimetal SrAs
Y. K. Song, G. W. Wang, S. C. Li +8
Topological nodal-line semimetals with exotic quantum properties are characterized by symmetry-protected line-contact bulk band crossings in the momentum space. However, in most of…
Coordination of the energy and temperature scales of pairing across the doping phase diagram of BiSrCaCuO
T. J. Reber, S. Parham, N. C. Plumb +15
Using a new variant of photoelectron spectroscopy, we measure the homogeneous near-nodal pairing () and pair-breaking self-energy () processes for a wide range of doping le…
Pairing, pair-breaking, and their roles in setting the Tc of cuprate high temperature superconductors
T. J. Reber, S. Parham, N. C. Plumb +13
The key ingredients in any superconductor are the Cooper pairs, in which two electrons combine to form a composite boson. In all conventional superconductors the pairing strength a…
Strong interaction between electrons and collective excitations in multiband superconductor MgB2
Daixiang Mou, Rui Jiang, Valentin Taufour +7
We use a tunable laser ARPES to study the electronic properties of the prototypical multiband BCS superconductor MgB2. Our data reveal a strong renormalization of the dispersion (k…
FeTeSe: a multiband superconductor in the clean and dirty limit
C. C. Homes, Y. M. Dai, J. S. Wen +2
The detailed optical properties of the multiband iron-chalcogenide superconductor FeTeSe have been reexamined for a large number of temperatures above and below t…
Pre-pairing and the "Filling" Gap in the Cuprates From the Tomographic Density of States
T. J. Reber, N. C. Plumb, Y. Cao +12
We use the tomographic density of states (TDoS), which is a measure of the density of states for a single slice through the band structure of a solid, to study the temperature evol…
The Origin and Non-quasiparticle Nature of Fermi Arcs in BiSrCaCuO
T. J. Reber, N. C. Plumb, Z. Sun +12
A Fermi arc is a disconnected segment of a Fermi surface observed in the pseudogap phase of cuprate superconductors. This simple description belies the fundamental inconsistency in…
Melting of Charge Stripes in Vibrationally Driven La1.875Ba0.125CuO4: Assessing the Respective Roles of Electronic and Lattice Order in Frustrated Superconductors
M. Först, R. I. Tobey, H. Bromberger +15
We report femtosecond resonant soft X-ray diffraction measurements of the dynamics of the charge order and of the crystal lattice in non-superconducting, stripe-ordered La1.875Ba0.…
Evolution from incoherent to coherent electronic states and its implications to superconductivity in FeTe1-xSex
E. Ieki, K. Nakayama, Y. Miyata +14
We have performed systematic angle-resolved photoemission spectroscopy (ARPES) of iron-chalcogenide superconductor FeTe1-xSex to elucidate the electronic states relevant to the sup…
Enhanced charge stripe order of superconducting La(2-x)Ba(x)CuO(4) in a magnetic field
M. Huecker, M. v. Zimmermann, Z. J. Xu +3
The effect of a magnetic field on the charge stripe order in La(2-x)Ba(x)CuO(4) has been studied by means of high energy (100 keV) x-ray diffraction for charge carrier concentratio…
Exploring the Dark Side of Cuprate Superconductors: s-wave Symmetry of the Pseudogap
S. Sakai, S. Blanc, M. Civelli +12
We reveal the full energy-momentum structure of the pseudogap of underdoped high-Tc cuprate superconductors. Our combined theoretical and experimental analysis explains the spectra…
Detection of Orbital Fluctuations Above the Structural Transition Temperature in the Iron-Pnictides and Chalcogenides
H. Z. Arham, C. R. Hunt, W. K. Park +15
We use point contact spectroscopy to probe () and . For we detect orbital fluctuations above while for…
Optical conductivity of superconducting K{0.8}Fe{2-y}Se2 single crystals: Evidence for a Josephson-coupled phase
C. C. Homes, Z. J. Xu, J. S. Wen +1
The optical properties of the iron-chalcogenide superconductor K{0.8}Fe{2-y}Se2, with a critical temperature Tc = 31 K, have been measured over a wide frequency range in the a-b pl…
Determination of the optical properties of La{2-x}Ba{x}CuO{4} for several dopings, including the anomalous x=1/8 phase
C. C. Homes, M. Huecker, Q. Li +4
The optical properties the high-temperature superconductor La{2-x}Ba{x}CuO{4} have been measured over a wide frequency and temperature range for light polarized in the a-b planes a…
Gap-like feature in the normal state of , and revealed by Point Contact Spectroscopy
H. Z. Arham, C. R. Hunt, W. K. Park +12
Point contact spectroscopy reveals a gap-like feature above the magnetic and structural transition temperatures for underdoped , and $Fe_{1+y}T…
Continuous magnetic and structural phase transitions in Fe1+yTe
I. A. Zaliznyak, Z. J. Xu, J. S. Wen +7
We report a sequence of continuous phase transformations in iron telluride, Fe1+yTe (y~0.1), which is observed by combining neutron diffraction, magnetic susceptibility, and specif…
Revealing the dual nature of magnetism in iron pnictides and iron chalcogenides using x-ray emission spectroscopy
H. Gretarsson, A. Lupascu, Jungho Kim +18
We report Fe K beta x-ray emission spectroscopy study of local magnetic moments in various iron based superconductors in their paramagnetic phases. Local magnetic moments are found…
Isotropic superconducting gaps with enhanced pairing on electron Fermi surfaces in FeTe0.55Se0.45
H. Miao, P. Richard, Y. Tanaka +17
The momentum distribution of the energy gap opening at the Fermi level of superconductors is a direct fingerprint of the pairing mechanism. While the phase diagram of the iron-base…
Momentum-space electronic structures and charge orders of high-temperature superconductors Ca2-xNaxCuO2Cl2 and Bi2Sr2CaCu2O8+delta
Jianqiao Meng, M. Brunner, K. -H. Kim +6
We study the electronic structure of Ca2-xNaxCuO2Cl2 and Bi2Sr2CaCu2O8+d samples in a wide range of doping, using angle-resolved photoemission spectroscopy, with emphasis on on the…
Disentangling Cooper-pair formation above Tc from the pseudogap state in the cuprates
Takeshi Kondo, Yoichiro Hamaya, Ari D. Palczewski +6
The discovery of the pseudogap in the cuprates created significant excitement amongst physicists as it was believed to be a signature of pairing, in some cases well above the room…
Stripe order in superconducting La(2-x)Ba(x)CuO(4) for 0.095 <= x <= 0.155
M. Huecker, M. v. Zimmermann, G. D. Gu +6
The correlations between stripe order, superconductivity, and crystal structure in La(2-x)Ba(x)CuO(4) single crystals have been studied by means of x-ray and neutron diffraction as…
Strong Coupling Superconductivity in Iron-Chalcogenide FeTeSe
W. K. Park, C. R. Hunt, H. Z. Arham +6
The superconducting order parameter in the iron-chalcogenide superconductor FeTeSe ( = 14.2 K) is investigated by point-contact Andreev reflection s…
Suppressed antinodal coherence with a single d-wave superconducting gap leads to two energy scales in underdoped cuprates
S. Blanc, Y. Gallais, M. Cazayous +6
Conventional superconductors are characterized by a single energy scale, the superconducting gap, which is proportional to the critical temperature Tc . In hole-doped high-Tc coppe…
Electronic correlations and unusual superconducting response in the optical properties of the iron-chalcogenide FeTe0.55Se0.45
C. C. Homes, A. Akrap, J. S. Wen +4
The in-plane complex optical properties of the iron-chalcogenide superconductor FeTe0.55Se0.45 have been determined above and below the critical temperature Tc = 14 K. At room temp…