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17 papers
Quantum Oscillations Evidence for Topological Bands in Kagome Metal ScV6Sn6
Guoxin Zheng, Yuan Zhu, Shirin Mozaffari +12
Metals with kagome lattice provide bulk materials to host both the flat-band and Dirac electronic dispersions. A new family of kagome metals is recently discovered in AV6Sn6. The D…
In-plane anisotropic magnetoresistance in detwinned ( = 0, 0.6)
Kelly J. Neubauer, Mason L. Klemm, Shirin Mozaffari +6
Understanding the magnetoresistance (MR) of a magnetic material forms the basis for uncovering the orbital mechanisms and charge-spin interactions in the system. Although the paren…
Nematic superconductivity from selective orbital pairing in Ba(Fe1-xMx)2As2 (M = Co, Ni) single crystals
Mason Klemm, Shirin Mozaffari, Rui Zhang +5
We use transport measurements to determine the in-plane anisotropy of the upper critical field Hc2 in detwinned superconducting Ba(Fe1-xMx)2As2 (M = Co, Ni) single crystals. In pre…
Tiny Sc allows the chains to rattle: Impact of Lu and Y doping on the charge density wave in ScVSn
William R. Meier, Richa Pokharel Madhogaria, Shirin Mozaffari +8
The kagome metals display an intriguing variety of electronic and magnetic phases arising from the connectivity of atoms on a kagome lattice. A growing number of these materials wi…
Topological Nernst and topological thermal Hall effect in rare-earth kagome ScMnSn
Richa P. Madhogaria, Shirin Mozaffari, Heda Zhang +5
Thermal and thermoelectric measurements are known as powerful tools to uncover the physical properties of quantum materials due to their sensitivity towards the scattering and chir…
Universal sublinear resistivity in vanadium kagome materials hosting charge density waves
Shirin Mozaffari, William R. Meier, Richa P. Madhogaria +14
The recent discovery of a charge density (CDW) state in ScVSn at = 91 K offers new opportunities to understand the origins of electronic instabilities in…
Origin and stability of the charge density wave in ScVSn
Yanhong Gu, Ethan Ritz, William R. Meier +7
Kagome metals are widely recognized as versatile platforms for exploring novel topological properties, unconventional electronic correlations, magnetic frustration, and superconduc…
High-temperature superconductivity in hydrides: experimental evidence and details
M. I. Eremets, V. S. Minkov, A. P. Drozdov +9
Since the discovery of superconductivity at 200 K in H3S [1] similar or higher transition temperatures, Tcs, have been reported for various hydrogen-rich compounds under ultra-high…
Evidence of a coupled electron-phonon liquid in NbGe
Hung-Yu Yang, Xiaohan Yao, Vincent Plisson +11
Whereas electron-phonon scattering typically relaxes the electron's momentum in metals, a perpetual exchange of momentum between phonons and electrons conserves total momentum and…
Complex Dirac-like Electronic Structure in Atomic Site Ordered Rh3In3.4Ge3.6
Aikaterini Flessa Savvidou, Judith K. Clark, Hua Wang +6
We report the synthesis via an indium flux method of a novel single-crystalline compound Rh3In3.4Ge3.6 that belongs to the cubic Ir3Ge7 structure type. In Rh3In3.4Ge3.6, the In and…
High-temperature superconductivity on the verge of a structural instability in lanthanum superhydride
Dan Sun, Vasily S. Minkov, Shirin Mozaffari +5
A possibility of high, room-temperature superconductivity was predicted for metallic hydrogen in the 1960s. However, metallization and superconductivity of hydrogen are yet to be u…
Bulk Fermi surfaces of the Dirac type-II semimetallic candidate NiTe2
Wenkai Zheng, Rico Schönemann, Shirin Mozaffari +7
Here, we present a study on the Fermi-surface of the Dirac type-II semi-metallic candidate NiTe via the temperature and angular dependence of the de Haas-van Alphen (dHvA) effe…
Multiple Dirac Nodes and Symmetry Protected Dirac Nodal Line in Orthorhombic -RhSi
Shirin Mozaffari, Niraj Aryal, Rico Schönemann +6
Owing to their chiral cubic structure, exotic multifold topological excitations have been predicted and recently observed in transition metal silicides like -RhSi. Herein, we re…
Superconductivity up to 243 K in yttrium hydrides under high pressure
P. P. Kong, V. S. Minkov, M. A. Kuzovnikov +9
The discovery of high-temperature conventional superconductivity in H3S with a critical temperature of Tc=203 K was followed by the recent record of Tc ~250 K in the face-centered…
Superconducting Phase-Diagram of H3S under High Magnetic Fields
Shirin Mozaffari, Dan Sun, Vasily S. Minkov +7
We report the temperature dependence of the upper critical fields of the high temperature superconductor HS under applied pressures of 155 and 160 GPa through th…
Superconductivity at 250 K in lanthanum hydride under high pressures
A. P. Drozdov, P. P. Kong, V. S. Minkov +11
The discovery of superconductivity at 203 K in H3S brought attention back to conventional superconductors whose properties can be described by the Bardeen-Cooper-Schrieffer (BCS) a…
Spin-Orbit Interaction and Kondo Scattering at the PrAlO/SrTiO Interface: Effects of Oxygen Content
Shirin Mozaffari, Samaresh Guchhait, John T. Markert
We report the effect of oxygen pressure during growth () on the electronic and magnetic properties of PrAlO films grown on -terminated SrTiO substra…