M. Frachet

activity

20172025

most citedHidden magnetism at the pseudogap critical point of a high temperature superconductor

93 citations · 285 across the 21 of their papers we have counts for

collaborators

21 papers

cond-mat.supr-con2025

Strain-induced structural change and nearly-commensurate diffuse scattering in the model high-temperature superconductor HgBa $_{2}$ CuO $_{4 + δ}$

Mai Ye, Wenshan Hong, Tom Lacmann +9

We investigate the strain response of underdoped HgBa $_{2}$ CuO $_{4 + δ}$ (Hg1201), by synchrotron X-ray diffraction and corresponding simulations of thermal diffuse scattering. The com…

cond-mat.supr-con2025

Orbital Ordering in the Charge Density Wave Phases of BaNi $_{2}$ (As $_{1 - x}$ P $_{x}$ ) $_{2}$

Tom Lacmann, Robert Eder, Igor Vinograd +8

We use resonant X-ray scattering at the nickel L $_{2, 3}$ edges to investigate the interplay between orbital degrees of freedom and charge density waves (CDW) in the superconductor…

cond-mat.supr-con2025★ 1 cited

Charge density waves and soft phonon evolution in the superconductor BaNi $_{2}$ (As $_{1 - x}$ P $_{x}$ ) $_{2}$

Tom Lacmann, Sofia-Michaela Souliou, Fabian Henssler +8

The superconductor BaNi $_{2}$ As $_{2}$ exhibits a soft-phonon-driven, incommensurate charge density wave (I-CDW) which is accompanied by a small orthorhombic structural phase transition…

cond-mat.supr-con2024★ 4 cited

Strange metal from spin fluctuations in a cuprate superconductor

D. J. Campbell, M. Frachet, V. Oliviero +7

Strange metals challenge our understanding of charge transport in metals. Here, we investigate how the strange metal phase of La $_{2 - x}$ Sr $_{x}$ CuO $_{4}$ is impacted by a field-induced…

cond-mat.supr-con2024★ 2 cited

Chemical pressure tuning of competing orders in $Ba_{1 - x} Ca_{x} Ni_{2} As_{2}$

F. Henssler, K. Willa, M. Frachet +5

$Ba Ni_{2} As_{2}$ , a structural-analogue to the iron-based parent compound $Ba Fe_{2} As_{2}$ , offers a unique platform to study…

cond-mat.str-el2024★ 3 cited

Anomalous phonon Grüneisen parameters in semiconductor Ta $_{2}$ NiS $_{5}$

Mai Ye, Tom Lacmann, Mehdi Frachet +7

Strain tuning is a powerful experimental method in probing correlated electron systems. Here we study the strain response of the lattice dynamics and electronic structure in semico…

cond-mat.mtrl-sci2023★ 1 cited

Doping-Induced Electronic and Structural Phase Transition in the Bulk Weyl Semimetal Mo1-xWxTe2

O. Fedchenko, F. K. Diekmann, P. Russmann +21

A comprehensive study of the electronic and structural phase transition from 1T` to Td in the bulk Weyl semimetal Mo1-xWxTe2 at different doping concentrations has been carried out…

cond-mat.supr-con2023★ 4 cited

Colossal c-axis response and lack of rotational symmetry breaking within the kagome plane of the CsV $_{3}$ Sb $_{5}$ superconductor

Mehdi Frachet, Liran Wang, Wei Xia +8

The kagome materials AV4 $_{3}$ Sb $_{5}$ (A = K, Rb, Cs) host an intriguing interplay between unconventional superconductivity and charge-density-waves. Here, we investigate CsV $_{3}$ Sb$_5…

cond-mat.supr-con2023★ 14 cited

Using strain to uncover the interplay between two- and three-dimensional charge density waves in high-temperature superconducting YBa $_{2}$ Cu $_{3}$ O $_{y}$

Igor Vinograd, Sofia Michaela Souliou, Amir-Abbas Haghighirad +14

Uniaxial pressure provides an efficient approach to control the competition between charge density waves (CDWs) and superconductivity in underdoped YBa $_{2}$ Cu $_{3}$ O $_{y}$ . I…

cond-mat.str-el2022★ 11 cited

Precursor phase with full phonon softening above the charge-density-wave phase transition in $2 H$ -TaSe $_{2}$

Xingchen Shen, Rolf Heid, Roland Hott +8

Research on charge-density-wave (CDW) ordered transition-metal dichalcogenides continues to unravel new states of quantum matter correlated to the intertwined lattice and electroni…

cond-mat.str-el2022★ 33 cited

An Electronic Nematic Liquid in BaNi $_{2}$ As $_{2}$

Yi Yao, Roland Willa, Tom Lacmann +10

Understanding the organizing principles of interacting electrons and the emergence of novel electronic phases is a central endeavor of condensed matter physics. Electronic nematici…

cond-mat.str-el2022★ 28 cited

Elastoresistivity in the incommensurate charge density wave phase of BaNi $_{2}$ (As $_{1-x}$ P $_{x}$ ) $_{2}$

M. Frachet, P. W. Wiecki, T. Lacmann +7

Electronic nematicity, the breaking of the crystal lattice rotational symmetry by the electronic fluid, is a fascinating quantum state of matter. Recently, BaNi $_{2}$ As $_{2}$ has emerg…

cond-mat.supr-con2022★ 2 cited

Charge-density-wave transitions, phase diagram, soft phonon and possible electronic nematicity: a thermodynamic investigation of BaNi2(As,P)2

Christoph Meingast, Anmol Shukla, Liran Wang +9

A detailed investigation of BaNi2(As,P)2 single crystals using high-resolution thermal-expansion, heat-capacity,Young-modulus and resistivity measurements is presented. The experim…

cond-mat.str-el2022★ 27 cited

Soft-phonon and charge-density-wave formation in nematic BaNi $_{2}$ As $_{2}$

S. M. Souliou, T. Lacmann, R. Heid +7

We use diffuse and inelastic x-ray scattering to study the formation of an incommensurate charge-density-wave (I-CDW) in BaNi $_{2}$ As $_{2}$ , a candidate system for charge-driven electr…

cond-mat.supr-con2021★ 1 cited

Evidence for a square-square vortex lattice transition in a high- $T_{c}$ cuprate superconductor

D. J. Campbell, M. Frachet, S. Benhabib +10

Using sound velocity and attenuation measurements in high magnetic fields, we identify a new transition in the vortex lattice state of La $_{2 - x}$ Sr $_{x}$ CuO $_{4}$ (LSCO). The transit…

cond-mat.supr-con2021★ 1 cited

Effect of pseudogap on electronic anisotropy in the strain dependence of the superconducting $T_{c}$ of underdoped YBa $_{2}$ Cu $_{3}$ O $_{y}$

M. Frachet, D. J. Campbell, A. Missiaen +11

For orthorhombic superconductors we define thermodynamic anisotropy $N \equiv d T_{c} / d ε_{22} - d T_{c} / d ε_{11}$ as the difference in how superconducting $T_{c}$ varies with strains $ε_…

cond-mat.supr-con2021★ 21 cited

Emerging symmetric strain response and weakening nematic fluctuations in strongly hole-doped iron-based superconductors

P. Wiecki, M. Frachet, A. -A. Haghighirad +4

Electronic nematicity is often found in unconventional superconductors, suggesting its relevance for electronic pairing. In the strongly hole-doped iron-based superconductors, the…

cond-mat.supr-con2020★ 14 cited

High magnetic field ultrasound study of spin freezing in La $_{1.88}$ Sr $_{0.12}$ CuO $_{4}$

M. Frachet, S. Benhabib, I. Vinograd +11

High- $T_{c}$ cuprate superconductors host spin, charge and lattice instabilities. In particular, in the antiferromagnetic glass phase, over a large doping range, lanthanum bas…

cond-mat.supr-con2019★ 93 cited

Hidden magnetism at the pseudogap critical point of a high temperature superconductor

Mehdi Frachet, Igor Vinograd, Rui Zhou +17

The mysterious pseudogap phase of cuprate superconductors ends at a critical hole doping level p* but the nature of the ground state below p* is still debated. Here, we show that t…

cond-mat.supr-con2017★ 1 cited

High field charge order across the phase diagram of $Y B a_{2} C u_{3} O_{y}$

F. Laliberté, M. Frachet, S. Benhabib +8

In hole-doped cuprates there is now compelling evidence that inside the pseudogap phase, charge order breaks translational symmetry leading to a reconstruction of the Fermi surface…

cond-mat.str-el2017★ 24 cited

Thermodynamic signatures of the field-induced states of graphite

D. LeBoeuf, C. W. Rischau, G. Seyfarth +7

When a magnetic field confines the carriers of a Fermi sea to their lowest Landau level, electron-electron interactions are expected to play a significant role in determining the e…

Strain-induced structural change and nearly-commensurate diffuse scattering in the model high-temperature superconductor HgBa2​CuO4+δ​

Orbital Ordering in the Charge Density Wave Phases of BaNi2​(As1−x​Px​)2​

Charge density waves and soft phonon evolution in the superconductor BaNi2​(As1−x​Px​)2​

Strange metal from spin fluctuations in a cuprate superconductor

Chemical pressure tuning of competing orders in Ba1−x​Cax​Ni2​As2​

Anomalous phonon Grüneisen parameters in semiconductor Ta2​NiS5​

Doping-Induced Electronic and Structural Phase Transition in the Bulk Weyl Semimetal Mo1-xWxTe2

Colossal c-axis response and lack of rotational symmetry breaking within the kagome plane of the CsV3​Sb5​ superconductor

Using strain to uncover the interplay between two- and three-dimensional charge density waves in high-temperature superconducting YBa2​Cu3​Oy​

Precursor phase with full phonon softening above the charge-density-wave phase transition in 2H-TaSe2​

An Electronic Nematic Liquid in BaNi2​As2​

Elastoresistivity in the incommensurate charge density wave phase of BaNi2​(As1-x​Px​)2​