Search

Layered metal-organic frameworks are promising candidates for new two-dimensional (2D) magnets, as the synthetic programmability of these materials can provide a route to diverse structural and electronic properties. However, such framework materials typically lack the heavy elements that engender magnetocrystalline anisotropy in the monolayer ferromagnets reported to date. Alternative sources of magnetic anisotropy are therefore needed in these materials. Here, we report the synthesis of single crystals of the framework material (NMe4)2[Fe2L3] (H2L = 3,6-dichloro-2,5-dihydroxybenzoquinone) and evaluate the angular dependence of its magnetic properties. Oriented-crystal magnetization measurements reveal strong uniaxial anisotropy, where the easy axis is aligned with the crystallographic c axis. While the spin carriers of this structure are isotropic S = 5/2 FeIII metal centers and S = 1/2 organic linkers, the anisotropy energy of the framework material is comparable to that of reported 2D ferromagnets. Density functional theory calculations indicate that the observed magnetocrystalline anisotropy arises from ligand-to-metal charge transfer that enhances the magnetic anisotropy of the otherwise-isotropic Fe centers, suggesting that metal-ligand covalency can be utilized as a general additive for the development of 2D magnets. These results show the possibility for (NMe4)2[Fe2L3] to retain magnetic order down to the 2D monolayer limit. In addition, the combination of large magnetic anisotropy and semiconducting character in (NMe4)2[Fe2L3] highlights its potential as a new 2D magnetic semiconductor.

Building on the Effort Recovery Model and Conservation of Resources Theory, this study provides new theoretical and empirical insights into how entrepreneurs increase their resilience by engaging in recovery experiences. Employing a longitudinal repeated survey design applied to 346 entrepreneurs, our findings reveal that control is the only recovery experience that directly influences resilience. We also uncover more complex indirect pathways through positive reappraisal and sleep. Overall, the study demonstrates that each recovery experience has a unique relationship with resilience, allowing us to theorize potential underlying mechanisms for how recovery translates into resilience. We offer practical suggestions for effective interventions addressing the recovery paradox in entrepreneurship during times of change and uncertainty. [ABSTRACT FROM AUTHOR]

Workplace sexual harassment remains an insidious yet pervasive component of organizational life. Building on research that has established that leaders play an important role in condoning or revoking sexual harassment, we theorize that a CEO's appearance—specifically, the extent to which their face is prototypically masculine—can influence employee assumptions about the patriarchal nature of organizational hierarchy, which, in turn, influences their perceptions of the degree to which sexual harassment will be tolerated. We test these ideas in three complementary studies. Study 1 observes that employees in large organizations headed by a CEO with a more masculine face report more instances of sexual harassment in online reviews. Study 2 uses an experiment to show that CEO facial masculinity drives followers' perceptions that sexual harassment is tolerated in an organization by increasing the presumption that the organization is patriarchal. Study 3 affirms these results with a sample of new employees both before and after their first day on the job. Together, these studies provide evidence that a presumption of patriarchy increases the perceived tolerance for sexual harassment, which yields more observations of sexual harassment in the workplace. [ABSTRACT FROM AUTHOR]

Two‐dimensional (2D) antiferromagnetic (AFM) semiconductors are promising components of opto‐spintronic devices due to terahertz operation frequencies and minimal interactions with stray fields. However, the lack of net magnetization significantly limits the number of experimental techniques available to study the relationship between magnetic order and semiconducting properties. Here, they demonstrate conditions under which photocurrent spectroscopy can be employed to study many‐body magnetic excitons in the 2D AFM semiconductor NiI2. The use of photocurrent spectroscopy enables the detection of optically dark magnetic excitons down to bilayer thickness, revealing a high degree of linear polarization that is coupled to the underlying helical AFM order of NiI2. In addition to probing the coupling between magnetic order and dark excitons, this work provides strong evidence for the multiferroicity of NiI2 down to bilayer thickness, thus demonstrating the utility of photocurrent spectroscopy for revealing subtle opto‐spintronic phenomena in the atomically thin limit. [ABSTRACT FROM AUTHOR]

Two‐dimensional (2D) antiferromagnetic (AFM) semiconductors are promising components of opto‐spintronic devices due to terahertz operation frequencies and minimal interactions with stray fields. However, the lack of net magnetization significantly limits the number of experimental techniques available to study the relationship between magnetic order and semiconducting properties. Here, they demonstrate conditions under which photocurrent spectroscopy can be employed to study many‐body magnetic excitons in the 2D AFM semiconductor NiI2. The use of photocurrent spectroscopy enables the detection of optically dark magnetic excitons down to bilayer thickness, revealing a high degree of linear polarization that is coupled to the underlying helical AFM order of NiI2. In addition to probing the coupling between magnetic order and dark excitons, this work provides strong evidence for the multiferroicity of NiI2 down to bilayer thickness, thus demonstrating the utility of photocurrent spectroscopy for revealing subtle opto‐spintronic phenomena in the atomically thin limit. [ABSTRACT FROM AUTHOR]

People undergoing career transitions often bring aspects of old roles into their new work contexts, and this interface can create conflict between lingering aspects of one's work self and the newer aspects of one's work self. Yet, we know little about how this conflict between old and new selves shapes employee outcomes. We examine this issue among ex‐entrepreneurs—individuals who have transitioned from a business owner to a wage employee. Drawing from role identity theory, we develop a model of the consequences of conflict between a lingering entrepreneur identity and a current work role identity. We propose that ex‐entrepreneurs who experience higher levels of identity conflict will be more likely to experience burnout and less likely to engage in boosterism of their employer, and that these relationships are explained by lower levels of perceived professional identity growth (i.e., progressive identity). We further suggest that the negative effect of conflict on progressive identity is exacerbated by nostalgia for one's entrepreneurial past. In a three‐stage field survey of ex‐entrepreneurs and their romantic partners, we found support for these hypotheses using both partner‐rated outcomes and self‐rated outcomes. We discuss implications for the literature on entrepreneurship careers and work identity in organizations. [ABSTRACT FROM AUTHOR]

Scholars have persuasively documented the positive influence of ADHD-like tendencies (the impermanent experience of ADHD-like symptoms) on entrepreneurial intentions. Yet, we know little about the causes of ADHD-like tendencies, and thus about factors that could heighten entrepreneurial intentions through such tendencies. Drawing from the biopsychosocial model, sleep physiology literature, and entrepreneurship literature, we propose that the biological experience of sleep problems may heighten the psychological experience of ADHD-like tendencies, which could nudge people toward the socially-embedded intention to venture. Four studies and a mini meta-analysis provide support, extending several literatures and suggesting that sleep problems could contribute to business founding. [ABSTRACT FROM AUTHOR]

This study investigates the antecedents of an entrepreneur's day-level innovative behavior. Drawing on 2,420 data points from a 10-day experience sampling study with 121 entrepreneurs, we find that sleep quality is a precursor to an entrepreneur's subsequent innovative behavior, in accordance with the effort-recovery model. Moreover, sleep quality is positively related to high-activation positive moods (e.g., enthusiastic, inspired) and negatively related to high-activation negative moods (e.g., tension, anxiety). Our multilevel structural equation model indicates that high-activation positive moods mediate the relationship between sleep quality and innovative behavior on a given day. These results are relevant for managing entrepreneurial performance. [ABSTRACT FROM AUTHOR]