Quantum order-by-disorder in strongly correlated metals

AG Green, G Conduit, F Krüger - Annual Review of Condensed …, 2018 - annualreviews.org
Entropic forces in classical many-body systems, eg, colloidal suspensions, can lead to the
formation of new phases. Quantum fluctuations can have similar effects: spin fluctuations …

Electron spin resonance in strongly correlated metals

SV Demishev - Applied Magnetic Resonance, 2020 - Springer
Modern technique of electron spin resonance (ESR) measurements and data analysis in
strongly correlated metals, which allows finding the full set of spectroscopic parameters …

Quantum order-by-disorder driven phase reconstruction in the vicinity of ferromagnetic quantum critical points

U Karahasanovic, F Krüger, AG Green - Physical Review B—Condensed …, 2012 - APS
The formation of new phases close to itinerant electron quantum critical points has been
observed experimentally in many compounds. We present a unified analytical framework to …

Multiple phases with a tricritical point and a Lifshitz point in the skyrmion host

HC Chauhan, B Kumar, JK Tiwari, S Ghosh - Physical Review B, 2019 - APS
Magnetic skyrmions, topologically stable spin swirling objects, have attracted a great interest
due to their potential applications in future spintronics and ultrahigh dense magnetic …

Hidden quantum phase transition in evidenced by small-angle neutron scattering

E Altynbaev, SA Siegfried, E Moskvin, D Menzel… - Physical Review B, 2016 - APS
The magnetic system of the Mn 1− x Fe x Ge solid solution is ordered in a spiral spin
structure in the whole concentration range of x∈[0÷ 1]. The close inspection of the small …

Restoration of quantum critical behavior by disorder in pressure-tuned (Mn, Fe) Si

T Goko, CJ Arguello, A Hamann, T Wolf, M Lee… - npj Quantum …, 2017 - nature.com
In second-order quantum phase transitions from magnetically ordered to paramagnetic
states at T= 0, tuned by pressure or chemical substitution, a quantum critical point is …

Scrutinizing Hall Effect in : Fermi Surface Evolution and Hidden Quantum Criticality

VV Glushkov, II Lobanova, VY Ivanov, VV Voronov… - Physical Review Letters, 2015 - APS
Separating between the ordinary Hall effect and anomalous Hall effect in the paramagnetic
phase of Mn 1-x Fe x Si reveals an ordinary Hall effect sign inversion associated with the …

Resummation of fluctuations near ferromagnetic quantum critical points

CJ Pedder, F Krüger, AG Green - Physical Review B—Condensed Matter and …, 2013 - APS
We present a detailed analysis of the nonanalytic structure of the free energy for the itinerant
ferromagnet near the quantum critical point in two and three dimensions. We analyze a …

Spin-wave stiffness in the Dzyaloshinskii-Moriya helimagnets

SV Grigoriev, EV Altynbaev, SA Siegfried… - Physical Review B, 2018 - APS
The small-angle neutron scattering is used to measure the spin-wave stiffness in the field-
polarized state of the Dzyaloshinskii-Moriya helimagnets Mn 1− x Fe x Si with x= 0.03, 0.06 …

Fluctuation-driven magnetic hard-axis ordering in metallic ferromagnets

F Krüger, CJ Pedder, AG Green - Physical review letters, 2014 - APS
We demonstrate that the interplay between soft electronic particle-hole fluctuations and
magnetic anisotropies can drive ferromagnetic moments to point along a magnetic hard axis …