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Enhancement of antiferromagnetic spin fluctuations in UTe under pressure revealed by Te NMR
Devi Vijayan Ambika, Qing-Ping Ding, Corey E. Frank +3
Characterizing magnetic fluctuations is one of the keys to understanding the origin of superconductivity in the spin-triplet superconductor UTe which exhibits two superconducti…
Visualizing the low-energy electronic structure of the triplet superconductor UTe through quasiparticle interference
Anuva Aishwarya, Hans Christiansen, Sheng Ran +6
The identification, control and theoretical modelling of spin-triplet superconductors (STC) remain a central theme in quantum materials research. Intrinsic STC are rare but offer r…
Odd-Parity Quasiparticle Interference in the Superconductive Surface State of UTe2
Shuqiu Wang, Kuanysh Zhussupbekov, Joseph P. Carroll +13
Although no known material exhibits intrinsic topological superconductivity, wherein spin-triplet odd-parity electron pairing occurs, UTe2 is now the leading representative of this…
Revealing isotropic abundant low-energy excitations in UTe through complex microwave surface impedance
Arthur Carlton-Jones, Alonso Suarez, Yun-Suk Eo +5
The complex surface impedance is a well-established tool to study the super- and normal-fluid responses of superconductors. Fundamental properties of the superconductor, such as th…
Pair Wavefunction Symmetry in UTe2 from Zero-Energy Surface State Visualization
Qiangqiang Gu, Shuqiu Wang, Joseph P. Carroll +9
Although nodal spin-triplet topological superconductivity appears probable in UTe2, its superconductive order-parameter remains unestablished. In theory, a distinctive identi…
Field-angle evolution of the superconducting and magnetic phases of UTe around the axis
Sylvia K. Lewin, Josephine J. Yu, Corey E. Frank +7
We experimentally determine the bounds of the magnetic-field-induced superconducting and magnetic phases near the crystalline axis of uranium ditelluride (UTe). By measurin…
Robust nodal behavior in the thermal conductivity of superconducting UTe
Ian M. Hayes, Tristin E. Metz, Corey E. Frank +5
The superconducting state of the heavy-fermion metal UTe has attracted considerable interest because of evidence for spin-triplet Cooper pairing and non-trivial topology. Progr…
High-Field Superconducting Halo in UTe
Sylvia K. Lewin, Peter Czajka, Corey E. Frank +7
Heavy fermion UTe is a promising candidate for topological superconductivity that also exhibits multiple high-field superconducting phases. The SC phase has only be…
A review of UTe at high magnetic fields
Sylvia K. Lewin, Corey E. Frank, Sheng Ran +2
Uranium ditelluride (UTe) is recognized as a host material to unconventional spin-triplet superconductivity, but it also exhibits a wealth of additional unusual behavior at hig…
Inhomogeneous high temperature melting and decoupling of charge density waves in spin-triplet superconductor UTe2
Alexander LaFleur, Hong Li, Corey E. Frank +5
Periodic spatial modulations of the superfluid density, or pair density waves, have now been widely detected in unconventional superconductors, either as the primary or the seconda…
Single-Component Superconductivity in UTe at Ambient Pressure
Florian Theuss, Avi Shragai, Gael Grissonnanche +8
The microscopic mechanism of Cooper pairing in a superconductor leaves its fingerprint on the symmetry of the order parameter. UTe has been inferred to have a multi-component o…
Tuning a magnetic energy scale with pressure in UTe
Hyunsoo Kim, I-Lin Liu, Wen-Chen Lin +4
A fragile ordered state can be easily tuned by various external parameters. When the ordered state is suppressed to zero temperature, a quantum phase transition occurs, which is of…
Visualizing the melting of the charge density wave in UTe2 by generation of pairs of topological defects with opposite winding
Anuva Aishwarya, Julian May-Mann, Avior Almoalem +6
Topological defects are singularities in an ordered phase that can have a profound effect on phase transitions and serve as a window into the order parameter. In this work we use s…
Orphan High Field Superconductivity in Non-Superconducting Uranium Ditelluride
Corey E. Frank, Sylvia K. Lewin, Gicela Saucedo Salas +7
Reentrant superconductivity is a phenomenon in which the destructive effects of magnetic field on superconductivity are mitigated, allowing a zero-resistance state to survive under…
Detection of a Pair Density Wave State in UTe
Qiangqiang Gu, Joseph P. Carroll, Shuqiu Wang +8
Spin-triplet topological superconductors should exhibit many unprecedented electronic properties including fractionalized electronic states relevant to quantum information processi…
Ubiquitous Spin Freezing in the Superconducting State of UTe2
Shyam Sundar, N. Azari, M. Goeks +17
In most superconductors electrons form Cooper pairs in a spin-singlet state mediated by either phonons or by long-range interactions such as spin fluctuations. The superconductor U…
Magnetic-field sensitive charge density wave orders in the superconducting phase of UTe2
Anuva Aishwarya, Julian May-Mann, Arjun Raghavan +8
The intense interest in triplet superconductivity partly stems from theoretical predictions of exotic excitations such as non-abelian Majorana modes, chiral supercurrents, and half…
Possible Coexistence of Antiferromagnetic and Ferromagnetic Spin Fluctuations in the Spin-triplet Superconductor UTe2 Revealed by 125Te NMR under Pressure
Devi V. Ambika, Qing-Ping Ding, Khusboo Rana +5
A spin-triplet superconducting state mediated by ferromagnetic (FM) spin fluctuations has been suggested to occur in the newly discovered heavy-fermion superconductor UTe. Howe…
Interplay between magnetism and superconductivity in UTe2
Di S. Wei, David Saykin, Oliver Y. Miller +7
Time-reversal symmetry breaking (TRSB) in UTe2 was inferred from observations of a spontaneous Kerr response in the superconducting state after cooling in zero magnetic field, whil…
Expansion of the high field-boosted superconductivity in UTe2 under pressure
Sheng Ran, Shanta R. Saha, I-Lin Liu +3
Magnetic field induced superconductivity is a fascinating quantum phenomenon, whose origin is yet to be fully understood. The recently discovered spin triplet superconductor, UTe2,…
An optical investigation of the heavy fermion normal state in superconducting UTe
Sirak M. Mekonen, Chang-Jong Kang, Dipanjan Chaudhuri +5
The recently discovered superconductor, UTe, has attracted immense scientific interest due to the experimental observations that suggest odd-parity superconductivity. It is bel…
Tuning magnetic confinement of spin-triplet superconductivity
Wen-Chen Lin, Daniel J. Campbell, Sheng Ran +6
Electrical magnetoresistance and tunnel diode oscillator measurements were performed under external magnetic fields up to 41 T applied along the crystallographic b-axis (hard axis)…
Enhanced spin triplet superconductivity due to Kondo destabilization
Sheng Ran, Hyunsoo Kim, I-Lin Liu +6
In a Kondo lattice system, suppression of effective Kondo coupling leads to the breakdown of the heavy-electron metal and a change in the electronic structure. Spin triplet superco…
Anomalous normal fluid response in a chiral superconductor UTe2
Seokjin Bae, Hyunsoo Kim, Yun Suk Eo +6
A chiral superconductor has been proposed as one pathway to realize topological quantum computation utilizing the predicted Majorana normal fluid at its boundary (i.e., a point, ed…