A. M. Tsvelik

collaborators

6 papers

cond-mat.str-el2025

Metamagnetic Transition in Low-Dimensional Site-Decorated Quantum Heisenberg Ferrimagnets

Weiguo Yin, A. M. Tsvelik

The prohibition of finite-temperature phase transition in one-dimensional (1D) Ising models and 1D/2D quantum Heisenberg models with short-range interactions fundamentally constrai…

cond-mat.str-el2025

EuAuSb: An odd-parity helical variation on altermagnetism

J. Sears, Juntao Yao, Zhixiang Hu +7

EuAuSb is a triangular-lattice Dirac semimetal in which a topological Hall effect has been observed to develop in association with a magnetically-ordered phase. Our single-crystal…

cond-mat.str-el2025

Two Channel Multi impurity Kondo model

A. M. Tsvelik, G. Kotliar

We show that the Ruderman-Kittel-Kasua-Yoisida interaction between overscreened spins in two channel Kondo impurity systems is a relevant perturbation when the number of impurities…

cond-mat.str-el2025

CeCo $_{2}$ P $_{2}$ : a unique Co-antiferromagnetic topological heavy-fermion system with $P \cdot T$ -protected Kondo effect and nodal-line excitations

Haoyu Hu, Yi Jiang, Defa Liu +5

Based on high-throughput screening and experimental data, we find that CeCo $_{2}$ P $_{2}$ is unique in heavy-fermion materials: it has a Kondo effect at a high temperature which is none…

cond-mat.stat-mech2024

Phase Switch Driven by the Hidden Half-Ice, Half-Fire State in a Ferrimagnet

Weiguo Yin, A. M. Tsvelik

The notion of "half fire, half ice" was recently introduced to describe an exotic macroscopic ground-state degeneracy emerging in a ferrimagnet under the critical magnetic field, i…

cond-mat.str-el2024

Relevance of Anisotropy in the Kondo Effect: Lessons From the Symplectic Case

Matan Lotem, Sarath Sankar, Tianhao Ren +5

A Kondo model with symplectic symmetry was recently put forward as the effective low-energy theory of a superconducting-island device coupled to multiple leads. This model, which p…

Metamagnetic Transition in Low-Dimensional Site-Decorated Quantum Heisenberg Ferrimagnets

EuAuSb: An odd-parity helical variation on altermagnetism

Two Channel Multi impurity Kondo model

CeCo2​P2​: a unique Co-antiferromagnetic topological heavy-fermion system with P⋅T-protected Kondo effect and nodal-line excitations

Phase Switch Driven by the Hidden Half-Ice, Half-Fire State in a Ferrimagnet

Relevance of Anisotropy in the Kondo Effect: Lessons From the Symplectic Case

CeCo $_{2}$ P $_{2}$ : a unique Co-antiferromagnetic topological heavy-fermion system with $P \cdot T$ -protected Kondo effect and nodal-line excitations