73 citations · 297 across the 27 of their papers we have counts for
27 papers
Direct Evidence of Unconventional Superconductivity in Doped Kagome system RVSb
Avior Almoalem, Yuqing Xing, Iksu Jang +7
The superconducting pairing symmetry of kagome metals remains a central unresolved question largely because phase-sensitive experiments capable of distinguishing between different…
Why Cooper pairs live in AdS2: a spectral analysis of the Yukawa-SYK model
Veronika Carolin Stangier, Jörg Schmalian
We establish the spectral foundation of the geometric formulation of Cooper pairing in the Yukawa--Sachdev--Ye--Kitaev model. Starting from the large- bilocal effective action,…
Anomalous Hall viscosity of altermagnets
Iksu Jang, Rui Aquino, Jörg Schmalian +1
We show that the phonon Hall viscosity at zero magnetic field is a natural probe of altermagnetism. First, we demonstrate that the finite elements of the Hall viscosity tensor unam…
Thermodynamic Discovery of Tetracriticality and Emergent Multicomponent Superconductivity in UTe
Sahas Kamat, Jared Dans, Shanta Saha +4
The candidate topological superconductor UTe exhibits a complex phase diagram with multiple superconducting states, yet the nature of their coexistence has remained a central m…
Probing multipolar order in the candidate altermagnet MnF through the elastocaloric effect under strain
Rahel Ohlendorf, Luca Buiarelli, Hilary M. L. Noad +5
Altermagnets break a combination of time-reversal and rotational symmetries without generating a net magnetization. As such, the order parameter of -wave altermagnets has the sa…
Strong-coupling superconductivity near Gross-Neveu quantum criticality in Dirac systems
Veronika C. Stangier, Daniel E. Sheehy, Jörg Schmalian
We study two-dimensional massless Dirac fermions at neutrality, coupled to bosonic modes through a Yukawa interaction. We then examine the intriguing possibility that such a system…
Superconductivity of Incoherent Electrons near the Relativistic Mott Transition in Twisted Dirac Materials
Veronika C. Stangier, Mathias S. Scheurer, Daniel E. Sheehy +1
We demonstrate that superconductivity driven by strong quantum-critical fluctuations can emerge near relativistic Mott transitions in twisted two-dimensional materials, taking on a…
Superconductivity in kagome metals due to soft loop-current fluctuations
Daniel J. Schultz, Grgur Palle, Asimpunya Mitra +3
We demonstrate that soft fluctuations of translation symmetry-breaking loop currents provide a mechanism for unconventional superconductivity in kagome metals that naturally addres…
Magnetic-field-tuned randomness in inhomogeneous altermagnets
Anzumaan R. Chakraborty, Jörg Schmalian, Rafael M. Fernandes
Altermagnetic (AM) states have compensated collinear magnetic configurations that are invariant under a combination of real-space rotation and time reversal. While these symmetries…
Local spectroscopy of loop current order with individual magnetic atoms
Jiangchang Zheng, Caiyun Chen, Xu Zhang +16
Hidden ordered states--characterized by order parameters that elude conventional probes--pose a fundamental challenge for their identification in quantum materials. Recent experime…
Elasto-Hall conductivity and the anomalous Hall effect in altermagnets
Keigo Takahashi, Charles R. W. Steward, Masao Ogata +2
Altermagnets break time-reversal symmetry, preserve the crystal translation invariance, and have a spin density with -wave, -wave, etc. momentum dependencies which do not con…
Extended strange metal regime from superconducting puddles
Noga Bashan, Evyatar Tulipman, Steven A. Kivelson +2
We study a model of mesoscale superconducting puddles in a metal, represented as dynamical impurities interacting with a finite number of electronic channels via Andreev and normal…
Topological dipoles of quantum skyrmions
Sopheak Sorn, Jörg Schmalian, Markus Garst
Magnetic skyrmions are spatially localized whirls of spin moments in two dimension, featuring a nontrivial topological charge and a well-defined topological charge density. We demo…
Obstructed Cooper pairs in flat band systems -- weakly-coherent superfluids and exact spin liquids
Tamaghna Hazra, Nishchhal Verma, Jörg Schmalian
Superconductivity in a partially filled flat band presents a vexing conceptual hurdle because the absence of a Fermi surface precludes a weak-coupling regime where one can extend i…
Pairing at a single Van Hove point
Risto Ojajärvi, Andrey V. Chubukov, Yueh-Chen Lee +2
We show that an interacting electronic system with a single ordinary or extended Van Hove point, which crosses the Fermi energy, is unstable against triplet superconductivity. The…
Unconventional superconductivity from electronic dipole fluctuations
Grgur Palle, Jörg Schmalian
We study electron-electron Coulomb interactions in electronic systems whose Fermi surfaces possess a finite electric dipole density. Although there is no net dipole moment, we show…
Strange metal and superconductor in the two-dimensional Yukawa-Sachdev-Ye-Kitaev model
Chenyuan Li, Davide Valentinis, Aavishkar A. Patel +4
The two-dimensional Yukawa-Sachdev-Ye-Kitaev (2d-YSYK) model provides a universal theory of quantum phase transitions in metals in the presence of quenched random spatial fluctuati…
Solvable models of two-level systems coupled to itinerant electrons: Robust non-Fermi liquid and quantum critical pairing
Evyatar Tulipman, Noga Bashan, Jörg Schmalian +1
Strange metal behavior is traditionally associated with an underlying putative quantum critical point at zero temperature. However, in many correlated metals, e.g., high-Tc cuprate…
Binding zero modes with fluxons in Josephson junctions of time-reversal invariant topological superconductors
Gabriel F. Rodríguez Ruiz, Adrian Reich, Alexander Shnirman +2
We study the joint dynamics of the phase bias and the propagating Majorana fermions of the edge modes in Josephson junctions containing 2D time-reversal invariant topological s…
Odd-frequency superfluidity from a particle-number-conserving perspective
K. Thompson, U. Zülicke, J. Schmalian +2
We investigate odd-in-time - or odd-frequency - pairing of fermions in equilibrium systems within the particle-number-conserving framework of Penrose, Onsager and Yang, where super…
Superconductivity due to fluctuating loop currents
Grgur Palle, Risto Ojajärvi, Rafael M. Fernandes +1
Orbital magnetism and the loop currents (LC) that accompany it have been proposed to emerge in many systems, including cuprates, iridates, and kagome superconductors. In the case o…
Tunable non-Fermi liquid phase from coupling to two-level systems
Noga Bashan, Evyatar Tulipman, Jörg Schmalian +1
We study a controlled large- theory of electrons coupled to dynamical two-level systems (TLSs) via spatially-random interactions. Such a physical situation arises when electrons…
Dynamic paramagnon-polarons in altermagnets
Charles R. W. Steward, Rafael M. Fernandes, Joerg Schmalian
The combined rotational and time-reversal symmetry breakings that define an altermagnet lead to an unusual d-wave (or g-wave) magnetization order parameter, which in turn can be mo…
Identification of multiple-flux-quanta vortices by core states in the two-band superconductor Pb
Thomas Gozlinski, Qili Li, Rolf Heid +5
Superconductors are of type I or II depending on whether they form an Abrikosov vortex lattice. Although bulk lead (Pb) is classified as a prototypical type-I superconductor, we ob…