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#### Intrinsic Time-Reversal-Invariant Topological Superconductivity in Thin Films of Iron-Based Superconductors

###### March 30, 2021

Cuts of the Fermi surface (yellow) of a quasi-two-dimensional thin film and closed loop where the pairing function changes sign (green dashed line), indicating the presence of a helical topological superconductor phase.

Rui-Xing Zhang and S. Das Sarma
Phys. Rev. Lett. 126, 137001 (2021)

#### Promoting Inclusive and Respectful Communications

###### November 18, 2020

APS Editor in Chief, Michael Thoennessen, discusses a new opportunity for communicating authors to include their pronouns together with their contact email in order to promote a more respectful, inclusive, and equitable environment.

###### April 1, 2021

A new way of measuring a vital property of electron beams helps prepare researchers for next-generation synchrotron light sources.

Synopsis on:
Ihar Lobach et al.
Phys. Rev. Accel. Beams 24, 040701 (2021)

Ihar Lobach et al.

#### Theory for Twisted Bilayer Photonic Crystal Slabs

A numerical technique enables the computational study of twisted photonic structures.

Beicheng Lou et al.
Phys. Rev. Lett. 126, 136101 (2021)

#### Charge Regulation Effects in Nanoparticle Self-Assembly

A computational scheme that combines Monte Carlo and molecular dynamics methods dynamically accounts for charge regulation in associating nanoparticles.

Tine Curk and Erik Luijten
Phys. Rev. Lett. 126, 138003 (2021)

#### Electron Acceleration during Macroscale Magnetic Reconnection

The first self-consistent macroscale simulation of magnetic reconnection with electron acceleration shows, consistently with the observation of the solar flare on September 10, 2017, that nonthermal electrons can contain up to 80% of the total electron energy and depend strongly on the ambient guide field.

H. Arnold et al.
Phys. Rev. Lett. 126, 135101 (2021)

###### March 30, 2021

New calculations show that spinning black holes—unlike nonspinning ones—can be tidally deformed by a nonsymmetric gravitational field.

Synopsis on:
Alexandre Le Tiec and Marc Casals
Phys. Rev. Lett. 126, 131102 (2021)

###### March 29, 2021

White dwarf explosions may be initiated by uranium in the stellar core detonating like a nuclear weapon.

Focus story on:
C. J. Horowitz and M. E. Caplan
Phys. Rev. Lett. 126, 131101 (2021)

#### Active Viscoelasticity of Odd Materials

The odd viscoelastic response of active chiral materials can be described by generalizations of canonical hydrodynamic theories of viscoelasticity.

Debarghya Banerjee, Vincenzo Vitelli, Frank Jülicher, and Piotr Surówka
Phys. Rev. Lett. 126, 138001 (2021)

#### Universal Aspects of a Strongly Interacting Impurity in a Dilute Bose Condensate

An analytical solution of an impurity in strong local interaction with a dilute Bose-Einstein condensate shows that the properties of the polaron are universal.

Pietro Massignan, Nikolay Yegovtsev, and Victor Gurarie
Phys. Rev. Lett. 126, 123403 (2021)

#### Observation of Distinct Spatial Distributions of the Zero and Nonzero Energy Vortex Modes in $\left({\mathrm{Li}}_{0.84}{\mathrm{Fe}}_{0.16}\right)\mathrm{OHFeSe}$

Measuring the spatial distribution of the vortex state in (Li,Fe)OHFeSe clarifies the origin of zero-energy modes which is the key feature of topological superconductivity.

Tianzhen Zhang et al.
Phys. Rev. Lett. 126, 127001 (2021)

#### Is Seismicity Operating at a Critical Point?

The branching ratio of the Epidemic-Type Aftershock Sequence model using spatial variability of the background rate is substantially lower than previously reported using a space invariant background rate, demonstrating that the Earth’s crust is at a subcritical rather than critical state.

Shyam Nandan, Sumit Kumar Ram, Guy Ouillon, and Didier Sornette
Phys. Rev. Lett. 126, 128501 (2021)

#### Assembly of a Rovibrational Ground State Molecule in an Optical Tweezer

A single NaCs molecule is coherently created in its rotational, vibrational, and electronic ground state in an optical tweezer.

William B. Cairncross et al.
Phys. Rev. Lett. 126, 123402 (2021)

#### Remembering Jack Sandweiss

It is with great sadness that we mourn the of our former colleague, Jack Sandweiss, who was Editor of Physical Review Letters for a quarter of a century (1987-2013). Jack had a passion for all of physics, which infused his role. He pressed us to be better, always with a smile. Jack spearheaded many initiatives in his time here, as you can see from this . He was always looking forward. We will miss him dearly.

#### Current Issue

Vol. 126, Iss. 13 — 2 April 2021

#### Announcements

##### APS Announces Outstanding Referees for 2021
###### February 24, 2021

APS has selected 151 Outstanding Referees for 2021 who have demonstrated exceptional work in the assessment of manuscripts published in the Physical Review journals. A full list of the Outstanding Referees is available online.

##### In memoriam: Jack Sandweiss, 1930-2020
###### January 6, 2021

It is with great sadness that we mourn the passing in November 2020 of our former colleague, Jack Sandweiss, who was Editor of PRL for a quarter of a century (1987-2013).

##### Rapid Communications papers will now be Letters
###### November 23, 2020

Starting January 1, 2021, the Rapid Communications article type will be renamed to Letters. With this change, all eight Physical Review journals that had previously classified articles of the type “Rapid Communications” will adopt the practice of Physical Review Applied and now publish such articles as Letters. Learn more

More Announcements

#### Job Openings

###### January 11, 2021

Physical Review Letters seeks a new Associate Editor at its Ridge, NY office. Duties include all phases of the peer review process, attendance at meetings, and visits to research institutions around the world, among others. Please see our ad for more details.

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