# Bound States and Field-Polarized Haldane Modes in a Quantum Spin Ladder.

@article{Ward2017BoundSA, title={Bound States and Field-Polarized Haldane Modes in a Quantum Spin Ladder.}, author={Simon Ward and Mattia Mena and Pierre Bouillot and Corinna Kollath and Thierry Giamarchi and Kai Phillip Schmidt and Bruce Normand and Karl W. Kr{\"a}mer and Daniel Biner and R. Bewley and Tatiana Guidi and Martin Boehm and Desmond F McMorrow and Christian R{\"u}egg}, journal={Physical review letters}, year={2017}, volume={118 17}, pages={ 177202 } }

The challenge of one-dimensional systems is to understand their physics beyond the level of known elementary excitations. By high-resolution neutron spectroscopy in a quantum spin-ladder material, we probe the leading multiparticle excitation by characterizing the two-magnon bound state at zero field. By applying high magnetic fields, we create and select the singlet (longitudinal) and triplet (transverse) excitations of the fully spin-polarized ladder, which have not been observed previously…

## 10 Citations

### Dynamic Structure Factor of Disordered Quantum Spin Ladders.

- PhysicsPhysical review letters
- 2018

Using linked-cluster expansions and bond-operator mean-field theory, huge effects on individual quasiparticles but also on composite bound states and two-quasiparticle continua are observed, leading to intriguing quantum structures in dynamical correlation functions well observable in spectroscopic experiments.

### Observation of 4- and 6-Magnon Bound States in the Spin-Anisotropic Frustrated Antiferromagnet FeI2

- PhysicsPhysical Review Letters
- 2021

Spin-waves e.g. magnons are the conventional elementary excitations of ordered magnets. However, other possibilities exist. For instance, magnon bound-states can arise due to attractive magnon-magnon…

### From deconfined spinons to coherent magnons in an antiferromagnetic Heisenberg chain with long range interactions

- Physics
- 2020

We study the spectrum and the nature of the excitations of an antiferromagnetic (AFM) Heisenberg chain with staggered long range interactions, both numerically using the time-dependent density matrix…

### Low-dimensional correlations under thermal fluctuations

- PhysicsPhysical Review B
- 2019

We study the correlation functions of quantum spin-$1/2$ two-leg ladders at finite temperature, under a magnetic field, in the gapless phase at various relevant temperatures $T\ensuremath{\ne}0$,…

### Triplons, magnons, and spinons in a single quantum spin system: SeCuO3

- Materials Science, PhysicsPhysical Review B
- 2021

Quantum magnets display a wide variety of collective excitations, including spin waves (magnons), coherent singlet-triplet excitations (triplons), and pairs of fractional spins (spinons). These modes…

### Quadrupolar magnetic excitations in an isotropic spin-1 antiferromagnet

- PhysicsNature communications
- 2022

The microscopic origins of emergent behaviours in condensed matter systems are encoded in their excitations. In ordinary magnetic materials, single spin-flips give rise to collective dipolar magnetic…

### Beyond perturbation theory: A time-dependent approach to inelastic scattering spectroscopies in- and away from equilibrium

- Physics
- 2020

We propose a non-perturbative numerical approach to calculate the spectrum of a many-body Hamiltonian with time and momentum resolution by exactly recreating a scattering event using the…

### Time-dependent approach to inelastic scattering spectroscopies in and away from equilibrium: Beyond perturbation theory

- PhysicsPhysical Review B
- 2020

We propose a nonperturbative numerical approach to calculate the spectrum of a many-body Hamiltonian with time and momentum resolution by exactly recreating a scattering event using the…

## References

SHOWING 1-10 OF 47 REFERENCES

### Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

- Physics
- 2014

ING AND INDEXING

### Phys

- Rev. Lett. 102, 107204
- 2009

### Phys

- Rev. Lett. 59, 799 (1987); Commun. Math. Phys. 115, 477
- 1988

### Nucl

- Instrum. Methods Phys. Res., Sect. A 637, 128
- 2011

### Phys

- Rev. Lett. 101, 137207
- 2008

### Phys

- Rev. B 41, 1657
- 1990

### Phys

- Rev. Lett. 87, 167204
- 2001

### Phys

- Rev. B 58, 3117
- 1998

### Mech

- P12006
- 2004

### Phys

- Rev. Lett. 98, 027403
- 2007