22 citations · 56 across the 13 of their papers we have counts for
14 papers
Carrier-mediated spin helices in low-dimensional systems: Josephson-interference features and correlation renormalization
Yung-Yeh Chang, Chen-Hsuan Hsu
Carrier-induced helical magnetism can arise in interacting one-dimensional systems coupled to localized moments. Here, we investigate the coupled-wire sliding-Luttinger-liquid coun…
Field-controlled breaking and restoration of parity-time symmetry in Josephson interference
Yi-Chen Tsai, Yung-Yeh Chang, Tao-Yi Hsu +6
Symmetry plays a fundamental role in determining the phases and physical properties of quantum matter. Controlling symmetry in mesoscopic superconducting devices provides a route t…
Higher-winding phases in one-dimensional non-Hermitian topological superconductors
Yung-Yeh Chang, Xiang-Yu Li, Ken Shiozaki +1
Non-Hermitian topological superconductors provide a setting in which point-gap topology, non-Hermitian skin effects, and Majorana zero modes are strongly intertwined. In this work,…
Theory of universal Planckian metal in t-J model: application for high-Tc cuprate superconductors
Yung-Yeh Chang, Khoe Van Nguyen, Kimberly Remund +1
The mysterious quantum-critical Planckian bad metal phase with perfect T-linear resistivity persisting beyond the quasi-particle limit and universal T-linear scattering rate has be…
Quasi-two-dimensional spin helix and magnon-induced singularity in twisted bilayer graphene
Yung-Yeh Chang, Kazuma Saito, Chen-Hsuan Hsu
Twisted bilayer graphene exhibits prominent correlated phenomena in two distinct regimes: a Kondo lattice near the magic angle, resembling heavy fermion systems, and a triangular c…
A mechanism for quantum-critical Planckian metal phase in high-temperature cuprate superconductors
Yung-Yeh Chang, Khoe Van Nguyen, Kim Remund +1
The mysterious metallic phase showing perfect -linear resistivity and a universal scattering rate with a universal prefactor and logarithmic…
Topological Kondo Superconductors
Yung-Yeh Chang, Khoe Van Nguyen, Kuang-Lung Chen +3
Spin-triplet -wave superconductors are promising candidates for topological superconductors. They have been proposed in various heterostructures where a material with strong spi…
The scaled-invariant Planckian metal and quantum criticality in CeNdCoIn
Yung-Yeh Chang, Hechang Lei, C. Petrovic +1
Perfect -linear resistivity associated with universal scattering rate: with , so-called Planckian metal state, has been observed in the normal state…
Strange metal in paramagnetic heavy-fermion Kondo lattice: Dynamical large-N fermionic multi-channel approach
Jiangfan Wang, Yung-Yeh Chang, Chung-Hou Chung
The mechanism of strange metal (SM) with unconventional charge transport near magnetic phase transitions has become an outstanding open problem in correlated electron systems. Rece…
Quantum phase transition in a two-dimensional Kondo-Heisenberg model: a Schwinger-boson large-N approach
Jiangfan Wang, Yung-Yeh Chang, Chung-Yu Mou +2
Strange metal behavior arises in heavy fermion metals close to antiferromagnetic transitions. An increasing amount of experiments indicates a link of such behavior to a Kondo break…
Strange superconductivity near an antiferromagnetic heavy fermion quantum critical point
Y. Y. Chang, F. Hsu, S. Kirchner +3
The heavy fermion CeMIn5 family with M = Co, Rh, Ir provide a prototypical example of strange superconductors with unconventional d-wave pairing and strange metal normal state, eme…
Strange metal state near a heavy-fermion quantum critical point
Yung-Yeh Chang, Silke Paschen, Chung-Hou Chung
Recent experiments on quantum criticality in the Ge-substituted heavy-electron material YbRh2Si2 under magnetic field have revealed a possible non-Fermi liquid (NFL) strange metal…
Andreev reflection in 2D relativistic materials with realistic tunneling transparency in normal-metal-superconductor junctions
Yung-Yeh Chang, Chung-Yu Mou, Chung-Hou Chung
The Andreev conductance across 2d normal metal (N)/superconductor (SC) junctions with relativistic Dirac spectrum is investigated theoretically in the Blonder-Tinkham-Klapwijk form…
A note on on-shell recursion relation of string amplitudes
Yung-Yeh Chang, Bo Feng, Chih-Hao Fu +3
In the application of on-shell recursion relation to string amplitudes, one challenge is the sum over infinite intermediate on-shell string states. In this note, we show how to sum…