# Phonons become chiral in the pseudogap phase of cuprates

@article{Grissonnanche2020PhononsBC, title={Phonons become chiral in the pseudogap phase of cuprates}, author={Ga{\"e}l Grissonnanche and S. Th'eriault and Adrien Gourgout and Marie-Eve Boulanger and E. Lefranccois and Amirreza Ataei and Francis Lalibert'e and Maxime Dion and J.-S. Zhou and Sunseng Pyon and Tomohiro Takayama and Hidenori Takagi and Nicolas Doiron-Leyraud and Louis Taillefer}, journal={arXiv: Superconductivity}, year={2020} }

The nature of the pseudogap phase of cuprates remains a major puzzle. One of its new signatures is a large negative thermal Hall conductivity $\kappa_{\rm xy}$, which appears for dopings $p$ below the pseudogap critical doping $p^*$, but whose origin is as yet unknown. Because this large $\kappa_{\rm xy}$ is observed even in the undoped Mott insulator La$_2$CuO$_4$, it cannot come from charge carriers, these being localized at $p = 0$. Here we show that the thermal Hall conductivity of La$_2…

## 12 Citations

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## References

SHOWING 1-10 OF 51 REFERENCES

Giant thermal Hall conductivity from neutral excitations in the pseudogap phase of cuprates

- Physics
- 2019

The nature of the pseudogap phase of cuprates remains a major puzzle. Although there are indications that this phase breaks various symmetries, there is no consensus on its fundamental nature.…

Fermi-surface transformation across the pseudogap critical point of the cuprate superconductor La1.6-xNd0.4SrxCuO4

- Physics
- 2017

The electrical resistivity $\rho$ and Hall coefficient R$_H$ of the tetragonal single-layer cuprate Nd-LSCO were measured in magnetic fields up to $H = 37.5$ T, large enough to access the normal…

Thermal Hall conductivity in the frustrated pyrochlore magnet Tb2Ti2O7

- Physics
- 2015

In a ferromagnet, the spin excitations are the well-studied magnons. In frustrated quantum magnets, long-range magnetic order fails to develop despite a large exchange coupling between the spins. In…

Phonon Thermal Hall Effect in Strontium Titanate.

- Medicine, PhysicsPhysical review letters
- 2020

It has been known for more than a decade that phonons can produce an off-diagonal thermal conductivity in the presence of a magnetic field. Recent studies of thermal Hall conductivity, κ_{xy}, in a…

Giant thermal Hall conductivity in the pseudogap phase of cuprate superconductors

- Physics, Materials ScienceNature
- 2019

Measurements of the thermal Hall conductivity in the x–y plane in the normal state of four different cuprates show that a large negative κ xy signal is a property of the pseudogap phase, appearing at its critical hole doping, p*.

Thermodynamic signatures of quantum criticality in cuprate superconductors

- Physics, MedicineNature
- 2019

It is concluded that the pseudogap phase of cuprates ends at a quantum critical point, the associated fluctuations of which are probably involved in d-wave pairing and the anomalous scattering of charge carriers.

Wiedemann-Franz law in the underdoped cuprate superconductor YBa 2 Cu 3 O y

- Physics
- 2016

The authors measured the electrical and thermal Hall conductivities of YBa${}_{2}$Cu${}_{3}$O${}_{y}$ in high magnetic fields to investigate the nature of the nonsuperconducting ground state in…

Large thermal Hall effect in
α−RuCl3
: Evidence for heat transport by Kitaev-Heisenberg paramagnons

- PhysicsPhysical Review B
- 2019

The honeycomb Kitaev model in a magnetic field is a source of a topological quantum spin liquid with Majorana fermions and gauge flux excitations as fractional quasiparticles. We present experimental…

Consideration of thermal Hall effect in undoped cuprates

- PhysicsPhysical Review B
- 2019

A recent observation of thermal Hall effect of magnetic origin in underdoped cuprates calls for critical re-examination of low-energy magnetic dynamics in undoped antiferromagnetic compound on square…

Approximately Quantized Thermal Hall Effect of Chiral Liquids Coupled to Phonons

- PhysicsPhysical Review X
- 2018

The recent observation of a half-integer quantized thermal Hall effect in $\alpha$-RuCl$_3$ is interpreted as a unique signature of a chiral spin liquid with a Majorana edge mode. A similar quantized…